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path: root/doc/bugs/assistant_eats_all_CPU.mdwn
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### Please describe the problem.

After running for a while, the assistant maxes my CPU. I have evidence
here that it is just sitting there, doing apparently nothing (transfers
are finished), eating precious CPU.

Nowadays, I do not let the assistant run on its own, otherwise it makes
my office noisy because the CPU fan starts.

This makes the assistant and the webapp basically unuseable for me:
if i want to use its feature, I must remember to shut down the daemon
every time I am done with it, which seems contrary to the spirit of
the project. :)

### What steps will reproduce the problem?

It's a little unclear. There was a peculiar crash here (power cable
yanked out) during a `git annex copy`, which *was* eating up all CPU,
but mostly through I/O.

That is the purple block in this graph:

![CPU usage during the last 24 hours][cpu-day.png]

Power was yanked out about right after that purple block was gone:

![Uptime in the last 24 hours][uptime-day.png]

Files were copied to an external drive at the time of the crash,
which explains the high iowait. The last lines in daemon.log are:

[[!format txt """
sent 184184937 bytes  received 31 bytes  13643330.96 bytes/sec
total size is 184162304  speedup is 1.00
[2013-12-31 23:56:47 EST] Transferrer: Uploaded American ..Queen.avi
[2013-12-31 23:56:47 EST] Pusher: Syncing with backup
To /backup/srv/video
   5155be4..7d904d5  git-annex -> synced/git-annex
"""]]

And daemon.status:

[[!format txt """
lastRunning:1388569856.366405s
scanComplete:True
sanityCheckRunning:False
lastSanityCheck:1387169250.801117s
"""]]

When the machine rebooted, I logged in, and resumed the transfer using
`git annex copy`. The assistant was also started automatically during
my session, but I wasn't aware of that until this morning (7AM) when i
came back to the terminal and noticed how noisy it was.

At that point i did `killall git-annex` and CPU usage returned to
normal, as the frequency of the CPU:

![CPU frequency scaling in the last 24 hours][cpuspeed-day.png]

I am trying to see if I can reproduce this problem reliably - I 
just started the assistant again now, and while the CPU usage is
already high, I will forgive it for now because it's doing its 
initial scans... Let's see what happens in the afternoon! --[[anarcat]]

Update: I seem to be able to reproduce. I just started the webapp and
the scans were performed. They are now finished, yet the CPU usage is 
still high:

[[!format txt """
top - 14:10:20 up 1 day,  1:16,  7 users,  load average: 5,51, 3,61, 2,53
Tasks: 292 total,   2 running, 288 sleeping,   0 stopped,   2 zombie
%Cpu(s): 60,9 us,  7,8 sy,  0,6 ni, 29,5 id,  0,8 wa,  0,0 hi,  0,5 si,  0,0 st
KiB Mem:   8162960 total,  6943100 used,  1219860 free,  1065464 buffers
KiB Swap:  4022268 total,    15452 used,  4006816 free,  1983252 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
18364 anarcat   20   0  152m  27m  18m S  53,7  0,3   0:35.61 git-annex
 8388 anarcat   20   0  192m  54m  21m S  47,8  0,7  12:55.19 git-annex
18671 anarcat   20   0  157m  33m  18m S  29,9  0,4   0:22.65 git-annex
"""]]

An strace on 18364 yields:

[[!format txt """
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 537245076}) = 0
[pid 18364] <... futex resumed> )       = ? ERESTARTSYS (To be restarted)
[pid 18364] --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
[pid 18364] rt_sigreturn(0x1a)          = 202
[pid 18364] futex(0x3de703c, FUTEX_WAIT_PRIVATE, 51, NULL <unfinished ...>
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 256339453}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 537670797}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 256748972}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 538079838}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 257202502}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 538533443}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 257611085}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 538941839}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 258018398}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 539349100}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 258433069}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 539763939}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 258863864}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 540195885}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 259295204}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 540626505}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 259729523}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 541060751}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 260131616}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 541463041}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 260539761}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 541871201}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 260970889}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 542302047}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 261378036}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 542709166}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 261780507}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 543111819}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 262194032}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 543525143}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 262610040}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 543941528}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 263042272}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 544374016}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18366] rt_sigprocmask(SIG_BLOCK, [TERM], [], 8) = 0
[pid 18366] clock_gettime(0x2 /* CLOCK_??? */, {82, 263532359}) = 0
[pid 18366] clock_gettime(0x3 /* CLOCK_??? */, {79, 544864814}) = 0
[pid 18366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18364] <... futex resumed> )       = ? ERESTARTSYS (To be restarted)
[pid 18364] --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
[pid 18364] rt_sigreturn(0x1a)          = 202
[pid 18364] futex(0x3de703c, FUTEX_WAIT_PRIVATE, 51, NULL <unfinished ...>
"""]]

 [cpu-day.png]: http://paste.anarc.at/cpu-day.png
 [uptime-day.png]: http://paste.anarc.at/uptime-day.png
 [cpuspeed-day.png]: http://paste.anarc.at/cpuspeed-day.png

### What version of git-annex are you using? On what operating system?

Debian wheezy.

[[!format sh """
anarcat@marcos:~$ git annex version
git-annex version: 5.20131109-gf2cb5b9
build flags: Assistant Webapp Pairing Testsuite S3 WebDAV Inotify DBus XMPP DNS Feeds Quvi TDFA CryptoHash
key/value backends: SHA256E SHA1E SHA512E SHA224E SHA384E SKEIN256E SKEIN512E SHA256 SHA1 SHA512 SHA224 SHA384 SKEIN256 SKEIN512 WORM URL
remote types: git gcrypt S3 bup directory rsync web webdav glacier hook
"""]]

### Please provide any additional information below.

This *may* be related to [[bugs/webapp_takes_100__37___of_the_cpu/]],
but I didn't observe both problems simultaneously so far - ie. the
webapp doesn't need to run for this bug to happen.

Here's the output of top:

[[!format sh """
top - 04:55:01 up 16:01, 10 users,  load average: 3,96, 3,72, 3,59
Tasks: 293 total,   6 running, 284 sleeping,   0 stopped,   3 zombie
%Cpu(s): 87,4 us, 10,9 sy,  0,6 ni,  0,1 id,  0,3 wa,  0,0 hi,  0,7 si,  0,0 st
KiB Mem:   8162960 total,  6847120 used,  1315840 free,  1084756 buffers
KiB Swap:  4022268 total,     1320 used,  4020948 free,  2041108 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
 8099 anarcat   20   0  144m  28m  18m S  34,0  0,4 460:10.96 git-annex
 6525 anarcat   20   0  436m 295m  18m S  28,4  3,7 448:50.71 git-annex
11146 munin     20   0 25376 6540 1896 R  28,4  0,1   0:00.05 munin-update
 8045 anarcat   20   0  165m  41m  18m S  22,7  0,5 455:14.41 git-annex
11142 root      20   0 32316 7356 2016 R  22,7  0,1   0:00.05 ikisite
11144 aegir     20   0  161m  16m 6608 R  22,7  0,2   0:00.05 php
 2649 liquidso  20   0  222m  54m 5516 S   5,7  0,7  40:40.61 liquidsoap
11149 anarcat   20   0 24448 1552 1072 R   5,7  0,0   0:00.01 top
    1 root      20   0 10644  784  652 S   0,0  0,0   0:01.10 init
    2 root      20   0     0    0    0 S   0,0  0,0   0:00.01 kthreadd
    3 root      20   0     0    0    0 S   0,0  0,0   2:10.09 ksoftirqd/0
    6 root      rt   0     0    0    0 S   0,0  0,0   0:00.22 migration/0
    7 root      rt   0     0    0    0 S   0,0  0,0   0:00.59 watchdog/0
    8 root      rt   0     0    0    0 S   0,0  0,0   0:00.25 migration/1
   10 root      20   0     0    0    0 S   0,0  0,0   2:11.10 ksoftirqd/1
   12 root      rt   0     0    0    0 S   0,0  0,0   0:00.17 watchdog/1
   13 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 cpuset
   14 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 khelper
   15 root      20   0     0    0    0 S   0,0  0,0   0:00.00 kdevtmpfs
   16 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 netns
   17 root      20   0     0    0    0 S   0,0  0,0   0:00.17 sync_supers
   18 root      20   0     0    0    0 S   0,0  0,0   0:00.00 bdi-default
   19 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kintegrityd
   20 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kblockd
   22 root      20   0     0    0    0 S   0,0  0,0   0:00.06 khungtaskd
   23 root      20   0     0    0    0 S   0,0  0,0   3:04.23 kswapd0
   24 root      25   5     0    0    0 S   0,0  0,0   0:00.00 ksmd
   25 root      39  19     0    0    0 S   0,0  0,0   0:00.00 khugepaged
   26 root      20   0     0    0    0 S   0,0  0,0   0:00.00 fsnotify_mark
   27 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 crypto
  113 root      20   0     0    0    0 S   0,0  0,0   0:00.01 khubd
  133 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ata_sff
  153 root      20   0     0    0    0 S   0,0  0,0   0:05.68 scsi_eh_0
  158 root      20   0     0    0    0 S   0,0  0,0   0:00.00 scsi_eh_1
  160 root      20   0     0    0    0 S   0,0  0,0   0:00.09 kworker/u:2
  161 root      20   0     0    0    0 S   0,0  0,0   0:00.00 scsi_eh_2
  162 root      20   0     0    0    0 S   0,0  0,0   0:00.00 scsi_eh_3
  163 root      20   0     0    0    0 S   0,0  0,0   0:01.43 kworker/u:3
  294 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  295 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kcryptd_io
  296 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kcryptd
  305 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  307 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  311 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  313 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  341 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  342 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kcryptd_io
  343 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kcryptd
  352 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  354 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  356 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  358 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  361 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kdmflush
  400 root      20   0     0    0    0 S   0,0  0,0   0:00.00 jbd2/dm-1-8
  401 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ext4-dio-unwrit
  468 root      20   0     0    0    0 S   0,0  0,0   0:02.19 kworker/1:2
  538 root      20   0 21804 1804  796 S   0,0  0,0   0:00.10 udevd
  705 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kpsmoused
  878 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 hd-audio0
  890 postfix   20   0 44216 2460 1912 S   0,0  0,0   0:00.00 pickup
  939 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 kvm-irqfd-clean
 1150 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 firewire
 1719 root      20   0     0    0    0 S   0,0  0,0   0:03.40 flush-254:3
 1786 root      20   0     0    0    0 S   0,0  0,0   0:00.17 jbd2/dm-2-8
 1787 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ext4-dio-unwrit
 1788 root      20   0     0    0    0 S   0,0  0,0   0:06.60 jbd2/dm-3-8
 1789 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ext4-dio-unwrit
 1790 root      20   0     0    0    0 S   0,0  0,0   0:02.56 jbd2/dm-4-8
 1791 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ext4-dio-unwrit
 1792 root      20   0     0    0    0 S   0,0  0,0   0:01.19 jbd2/dm-8-8
 1793 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 ext4-dio-unwrit
 2004 anarcat   20   0     0    0    0 Z   0,0  0,0   0:17.57 chromium
 2379 root      20   0  115m 1796  928 S   0,0  0,0   0:02.16 rsyslogd
 2435 icecast2  20   0  148m 4440 2780 S   0,0  0,1   0:56.15 icecast2
 2488 root      20   0  4112  644  500 S   0,0  0,0   0:00.66 acpid
 2513 daemon    20   0 16668  156    0 S   0,0  0,0   0:00.00 atd
 2536 proxy     20   0  6884  344  196 S   0,0  0,0   0:00.00 polipo
 2573 messageb  20   0 31488 2548  884 S   0,0  0,0   0:00.79 dbus-daemon
 2626 bind      20   0  111m  15m 2276 S   0,0  0,2   0:00.46 named
 2694 root      20   0 82308 3112 2520 S   0,0  0,0   0:00.03 gdm3
 2729 root      20   0 99,3m 4652 3608 S   0,0  0,1   0:00.02 gdm-simple-slav
 2731 root      20   0  178m  27m 9908 S   0,0  0,3  40:30.80 Xorg
 2738 root      20   0  282m  14m 6576 S   0,0  0,2   0:02.98 apache2
 2763 root      20   0     0    0    0 S   0,0  0,0   0:00.92 flush-254:4
 2779 root      20   0 21000 1164  904 S   0,0  0,0   0:00.00 bluetoothd
 2784 avahi     20   0 34236 1876 1460 S   0,0  0,0   0:00.15 avahi-daemon
 2786 avahi     20   0 34032  440  184 S   0,0  0,0   0:00.00 avahi-daemon
 2792 root      10 -10     0    0    0 S   0,0  0,0   0:00.00 krfcommd
 2829 bitlbee   20   0 45216 1136  712 S   0,0  0,0   0:00.00 bitlbee
 2973 root      20   0  136m 3572 2892 S   0,0  0,0   0:00.37 accounts-daemon
 2974 clamav    20   0 45432 2172 1260 S   0,0  0,0   0:26.77 freshclam
 2997 root      20   0  141m 4552 3072 S   0,0  0,1   0:00.21 polkitd
 3021 root      20   0 18876  984  740 S   0,0  0,0   0:00.48 cron
 3062 root      20   0 75948 3436 2304 S   0,0  0,0   0:00.03 cupsd
 3064 colord    20   0  152m 8672 3344 S   0,0  0,1   0:00.10 colord
 3069 root      20   0  126m 4116 2964 S   0,0  0,1   0:00.16 console-kit-dae
 3071 colord    20   0  300m  12m 7932 S   0,0  0,2   0:01.23 colord-sane
 3171 nobody    10 -10 44328 1672 1048 S   0,0  0,0   0:00.88 gpsd
 3178 root      20   0  9204 3508  380 S   0,0  0,0   0:39.47 haveged
 3192 ikiwiki-  20   0 13772  864  728 S   0,0  0,0   0:00.00 git-daemon
 3310 anarcat   20   0 91856  27m 2820 S   0,0  0,3   0:03.30 xterm
 3314 anarcat   20   0 24004 5452 1876 S   0,0  0,1   0:00.54 bash
 3336 root      20   0  152m 4172 3300 S   0,0  0,1   0:00.07 upowerd
 3437 root      20   0     0    0    0 S   0,0  0,0   0:00.00 scsi_eh_6
 3438 root      20   0     0    0    0 S   0,0  0,0   6:52.70 usb-storage
 3470 anarcat   20   0 61648 2516 1912 S   0,0  0,0   0:00.01 gvfs-gphoto2-vo
 3474 anarcat   20   0 78024 2564 2048 S   0,0  0,0   0:02.04 gvfs-afc-volume
 3530 root      20   0 52400  10m 2064 S   0,0  0,1   0:03.34 munin-node
 3599 rtkit     21   1 39632 1344 1112 S   0,0  0,0   0:00.30 rtkit-daemon
 3721 root      20   0  4176  700  560 S   0,0  0,0   0:00.01 mysqld_safe
 3899 anarcat   20   0 85216  21m 2872 S   0,0  0,3   0:00.76 xterm
 3903 anarcat   20   0 23216 4688 1804 S   0,0  0,1   0:00.58 bash
 4108 mysql     30  10  434m 137m 4396 S   0,0  1,7   1:53.14 mysqld
 4109 root      20   0  4084  628  524 S   0,0  0,0   0:00.00 logger
 4209 anarcat   20   0  129m  23m  18m S   0,0  0,3   1:06.16 git-annex
 4226 root      20   0  183m 4888 3504 S   0,0  0,1   0:00.08 gdm-session-wor
 4240 anarcat   20   0 21360 2572 2188 S   0,0  0,0   0:00.34 git
 4431 root      20   0     0    0    0 S   0,0  0,0   0:00.00 kauditd
 4447 anarcat   20   0  4176  664  548 S   0,0  0,0   0:00.03 sh
 4530 ntp       20   0 41052 2284 1644 S   0,0  0,0   0:02.71 ntpd
 4593 postgres  20   0  102m 9008 7680 S   0,0  0,1   0:01.04 postgres
 4667 anarcat   20   0 12384 1072  704 S   0,0  0,0   0:00.11 ssh-agent
 4668 anarcat   20   0 20164  372  156 S   0,0  0,0   0:01.03 gpg-agent
 4671 anarcat   20   0 24184  552  304 S   0,0  0,0   0:00.00 dbus-launch
 4672 anarcat   20   0 30668 1592  736 S   0,0  0,0   0:01.10 dbus-daemon
 4704 anarcat   20   0 49456 2740 2216 S   0,0  0,0   0:00.13 xfconfd
 4711 anarcat   20   0 63740 3124 2312 S   0,0  0,0   0:02.61 xscreensaver
 4713 anarcat   20   0  156m 8232 5856 S   0,0  0,1   0:06.14 xfce4-session
 4714 postgres  20   0  102m 1952  616 S   0,0  0,0   0:06.79 postgres
 4715 postgres  20   0  102m 1704  376 S   0,0  0,0   0:04.95 postgres
 4716 postgres  20   0  102m 3068 1128 S   0,0  0,0   0:01.32 postgres
 4717 postgres  20   0 72884 1800  416 S   0,0  0,0   0:00.99 postgres
 4735 postgrey  20   0 66452  14m 3136 S   0,0  0,2   0:00.40 /usr/sbin/postg
 4753 anarcat   20   0  124m 4060 2916 S   0,0  0,0   0:00.02 xfsettingsd
 4754 anarcat   20   0  166m 6496 5204 S   0,0  0,1   0:00.07 Thunar
 4778 anarcat   20   0 63364 2564 2096 S   0,0  0,0   0:00.03 gvfsd
 4783 anarcat   20   0  305m  14m 9568 S   0,0  0,2   0:52.46 xfce4-panel
 4790 anarcat   20   0  156m 7968 6232 S   0,0  0,1   0:00.23 xfdesktop
 4791 root      20   0 21516  804  496 S   0,0  0,0   0:00.00 dovecot
 4837 anarcat   20   0  148m 4296 2768 S   0,0  0,1   0:11.87 xfce4-settings-
 4856 anarcat   20   0 26620 1248  988 S   0,0  0,0   1:19.60 xcompmgr
 4873 anarcat   20   0  115m 8004 3872 S   0,0  0,1   0:07.42 awesome
 4887 anarcat   20   0  267m  12m 8664 S   0,0  0,2   0:02.51 update-notifier
 4899 anarcat   20   0  183m 5868 4708 S   0,0  0,1   0:00.18 polkit-gnome-au
 4905 anarcat   20   0 56320 4180 2040 S   0,0  0,1   0:00.10 gconfd-2
 4908 anarcat    9 -11  300m 6912 4184 S   0,0  0,1   0:08.00 pulseaudio
 4916 root      20   0  126m 4208 3056 S   0,0  0,1   0:02.46 udisks-daemon
 4917 root      20   0 47408  776  428 S   0,0  0,0   0:06.61 udisks-daemon
 4921 anarcat   20   0  113m 3200 2448 S   0,0  0,0   0:00.00 gconf-helper
 4972 anarcat   20   0  145m 7432 5880 S   0,0  0,1   0:00.09 panel-16-systra
 4974 anarcat   20   0  148m 9328 7348 S   0,0  0,1   2:40.37 xfce4-weather-p
 4975 anarcat   20   0  174m  11m 8312 S   0,0  0,1   0:42.26 xfce4-xkb-plugi
 4978 mpd       20   0  503m  29m 2920 S   0,0  0,4   1:24.97 mpd
 5029 mpd       20   0  256m 6412 4008 S   0,0  0,1   0:11.74 pulseaudio
 5030 dovecot   20   0 13044  768  592 S   0,0  0,0   0:00.00 anvil
 5031 root      20   0 13172  944  628 S   0,0  0,0   0:00.00 log
 5034 root      20   0 23156 2536  768 S   0,0  0,0   0:00.00 config
 5040 mpd       20   0  113m 3192 2448 S   0,0  0,0   0:00.00 gconf-helper
 5234 root      20   0     0    0    0 S   0,0  0,0   0:01.19 kworker/0:1
 5745 root      20   0 37788 2472 1912 S   0,0  0,0   0:00.68 master
 5756 postfix   20   0 44368 2700 2100 S   0,0  0,0   0:00.27 qmgr
 5807 root      20   0 49848 1216  608 S   0,0  0,0   0:00.05 sshd
 5908 debian-t  20   0 56008  21m 2988 S   0,0  0,3   0:21.87 tor
 5928 debian-t  30  10  190m  31m 2560 S   0,0  0,4   7:35.56 transmission-da
 5948 anarcat   20   0 71776 8204 2860 S   0,0  0,1   0:05.76 xterm
 5954 anarcat   20   0 22956 4540 1772 S   0,0  0,1   0:00.10 bash
 6019 spampd    20   0  147m  62m 1844 S   0,0  0,8   0:00.55 spampd
 6049 root       0 -20     0    0    0 S   0,0  0,0   0:00.00 iprt
 6085 root      20   0  3948   84    0 S   0,0  0,0   0:00.00 minissdpd
 6095 root      20   0 17404  908  744 S   0,0  0,0   0:00.00 getty
 6096 root      20   0 17404  908  744 S   0,0  0,0   0:00.00 getty
 6097 root      20   0 17404  904  744 S   0,0  0,0   0:00.00 getty
 6098 root      20   0 17404  896  744 S   0,0  0,0   0:00.00 getty
 6099 root      20   0 17404  900  744 S   0,0  0,0   0:00.00 getty
 6100 root      20   0 17404  904  744 S   0,0  0,0   0:00.00 getty
 6108 anarcat   20   0 24248 1040  816 S   0,0  0,0   0:00.08 screen
 6109 anarcat   20   0 25864 2640  796 S   0,0  0,0   0:05.37 screen
 6110 anarcat   20   0 22868 4220 1624 S   0,0  0,1   0:00.06 bash
 6153 root      20   0     0    0    0 S   0,0  0,0   0:00.00 flush-254:8
 6174 anarcat   20   0 22872 4224 1624 S   0,0  0,1   0:00.07 bash
 6238 anarcat   20   0  103m  12m 5232 S   0,0  0,2   0:20.80 irssi
 6252 anarcat   20   0  212m  40m  13m S   0,0  0,5   1:09.74 emacs23
 6534 anarcat   20   0 22876 4400 1716 S   0,0  0,1   0:00.07 bash
 6598 anarcat   20   0  302m 163m 3864 S   0,0  2,0  17:19.63 offlineimap
 6616 anarcat   20   0 22408 2648 2228 S   0,0  0,0   0:05.04 git
 6662 root      20   0     0    0    0 S   0,0  0,0   0:01.25 kworker/1:1
 6666 root      20   0     0    0    0 S   0,0  0,0   0:00.00 flush-254:2
 6897 anarcat   20   0 1011m 159m  47m S   0,0  2,0   4:54.69 chromium
 6902 postfix   20   0 46744 3396 2400 S   0,0  0,0   0:00.09 tlsmgr
 6903 anarcat   20   0  283m 7952 2788 S   0,0  0,1   0:05.03 chromium
 6904 anarcat   20   0  6240  356  272 S   0,0  0,0   0:00.00 chrome-sandbox
 6905 anarcat   20   0  304m  17m  12m S   0,0  0,2   0:00.02 chromium
 6908 anarcat   20   0  320m 5800  764 S   0,0  0,1   0:00.16 chromium
 6950 anarcat   20   0  955m  31m  16m S   0,0  0,4   0:01.68 chromium
 6955 anarcat   20   0  953m  33m  17m S   0,0  0,4   0:01.25 chromium
 6960 anarcat   20   0  959m  36m  15m S   0,0  0,5   0:08.32 chromium
 6965 anarcat   20   0  957m  34m  14m S   0,0  0,4   0:10.25 chromium
 6970 anarcat   20   0 1029m 114m  17m S   0,0  1,4   0:46.99 chromium
 6975 anarcat   20   0  953m  26m  14m S   0,0  0,3   0:00.53 chromium
 6980 anarcat   20   0  959m  35m  16m S   0,0  0,4   0:14.68 chromium
 6985 anarcat   20   0  963m  45m  17m S   0,0  0,6   0:22.59 chromium
 6990 anarcat   20   0  952m  25m  13m S   0,0  0,3   0:00.70 chromium
 6995 anarcat   20   0  960m  36m  18m S   0,0  0,5   0:27.21 chromium
 7040 anarcat   20   0  979m  69m  22m S   0,0  0,9   0:05.41 chromium
 7055 anarcat   20   0  966m  51m  20m S   0,0  0,6   0:04.88 chromium
 7063 anarcat   20   0  967m  42m  18m S   0,0  0,5   0:04.46 chromium
 7072 anarcat   20   0  967m  49m  19m S   0,0  0,6   0:05.17 chromium
 7078 anarcat   20   0  971m  53m  19m S   0,0  0,7   0:05.68 chromium
 7087 anarcat   20   0  963m  51m  19m S   0,0  0,7   0:04.75 chromium
 7096 anarcat   20   0  961m  48m  18m S   0,0  0,6   0:04.75 chromium
 7107 anarcat   20   0  161m 4440 3252 S   0,0  0,1   0:02.90 gvfs-gdu-volume
 7127 anarcat   20   0  967m  55m  22m S   0,0  0,7   1:07.92 chromium
 7183 anarcat   20   0  912m  55m  20m S   0,0  0,7   0:04.97 chromium
 7213 anarcat   20   0  964m  47m  19m S   0,0  0,6   0:04.69 chromium
 7235 anarcat   20   0  965m  65m  21m S   0,0  0,8   0:05.26 chromium
 7258 anarcat   20   0  961m  57m  20m S   0,0  0,7   0:05.39 chromium
 7285 anarcat   20   0 18652 2484 1000 S   0,0  0,0   0:01.25 git
 7434 anarcat   39  19 18124 1960  964 S   0,0  0,0   0:00.29 git
 7445 www-data  20   0  141m  24m 5620 S   0,0  0,3   0:00.71 munin-cgi-graph
 7452 anarcat   20   0  980m  63m  22m S   0,0  0,8   0:02.50 chromium
 7492 anarcat   20   0  978m  64m  21m S   0,0  0,8   0:03.74 chromium
 7498 anarcat   20   0  978m  61m  21m S   0,0  0,8   0:01.42 chromium
 7518 anarcat   20   0  984m  63m  22m S   0,0  0,8   0:04.38 chromium
 7532 anarcat   20   0  973m  56m  21m S   0,0  0,7   0:02.28 chromium
 7813 root      20   0     0    0    0 S   0,0  0,0   0:01.22 kworker/0:2
 7899 root      20   0     0    0    0 S   0,0  0,0   0:00.96 kworker/1:0
 8058 anarcat   20   0 24488 1460 1104 S   0,0  0,0   0:28.34 git
 8107 anarcat   20   0 17412 1384 1100 S   0,0  0,0   0:00.00 git
 8130 anarcat   20   0 23792 7572 1004 S   0,0  0,1   0:41.63 git
 8236 anarcat   39  19 21152 4940  964 S   0,0  0,1   0:00.71 git
 8405 anarcat   20   0 17368 1364 1108 S   0,0  0,0   0:00.54 git
 8407 anarcat   20   0 17464 1336  964 S   0,0  0,0   0:00.03 git
 8610 anarcat   20   0 78228  14m 2860 S   0,0  0,2   0:00.37 xterm
 8614 anarcat   20   0 23084 4548 1796 S   0,0  0,1   0:00.28 bash
 8689 anarcat   20   0 72992 9224 2860 S   0,0  0,1   0:00.38 xterm
 8693 anarcat   20   0 22876 4380 1696 S   0,0  0,1   0:00.07 bash
 8735 root      20   0 99,3m 4616 3576 S   0,0  0,1   0:00.02 gdm-simple-slav
 8736 root      20   0  142m  15m 6664 S   0,0  0,2   0:00.56 Xorg
 8755 Debian-g  20   0 30196 1184  736 S   0,0  0,0   0:00.01 dbus-daemon
 8756 root      20   0  119m 4548 3432 S   0,0  0,1   0:00.08 gdm-session-wor
 8757 root      20   0 55872 2116 1572 S   0,0  0,0   0:00.00 sudo
 8759 aegir     20   0 20640 2248 1660 S   0,0  0,0   0:00.07 bash
 8769 Debian-g  20   0  266m  10m 7720 S   0,0  0,1   0:00.07 gnome-session
 8773 Debian-g  20   0  502m  24m  10m S   0,0  0,3   0:00.85 gnome-settings-
 8780 Debian-g  20   0 51980 2236 1836 S   0,0  0,0   0:00.00 gvfsd
 8784 Debian-g   9 -11  237m 6044 3644 S   0,0  0,1   0:00.07 pulseaudio
 8785 Debian-g  20   0  113m 3196 2448 S   0,0  0,0   0:00.00 gconf-helper
 8787 Debian-g  20   0 52956 3756 1932 S   0,0  0,0   0:00.06 gconfd-2
 8790 Debian-g  20   0  279m 9124 6632 S   0,0  0,1   0:00.12 metacity
 8795 Debian-g  20   0  171m 9328 7056 S   0,0  0,1   0:00.04 polkit-gnome-au
 8796 Debian-g  20   0  362m  16m  11m S   0,0  0,2   0:00.68 gdm-simple-gree
 8812 root      20   0 72360 3916 2948 S   0,0  0,0   0:00.08 gdm-session-wor
 9129 root      20   0     0    0    0 S   0,0  0,0   0:00.74 kworker/0:0
 9311 www-data  20   0  288m  44m  33m S   0,0  0,6   0:07.55 apache2
10405 www-data  20   0  287m  42m  32m S   0,0  0,5   0:06.75 apache2
10406 www-data  20   0  287m  44m  34m S   0,0  0,6   0:07.02 apache2
10409 www-data  20   0  287m  41m  31m S   0,0  0,5   0:06.51 apache2
10412 www-data  20   0  287m  42m  32m S   0,0  0,5   0:06.82 apache2
10413 www-data  20   0  291m  40m  27m S   0,0  0,5   0:06.52 apache2
10415 www-data  20   0  287m  39m  29m S   0,0  0,5   0:06.67 apache2
10416 www-data  20   0  288m  42m  31m S   0,0  0,5   0:06.28 apache2
10417 www-data  20   0  290m  50m  38m S   0,0  0,6   0:07.43 apache2
10878 root      20   0     0    0    0 S   0,0  0,0   0:00.02 kworker/0:3
11037 anarcat   20   0  4180  584  488 S   0,0  0,0   0:00.00 sh
11038 anarcat   20   0 62760 4964 3244 S   0,0  0,1   0:00.48 notmuch
11040 anarcat   20   0  4180  652  544 S   0,0  0,0   0:00.00 post-new
11133 root      20   0 52576 1468 1052 S   0,0  0,0   0:00.00 cron
11134 root      20   0 52576 1464 1052 S   0,0  0,0   0:00.00 cron
11135 root      20   0 52576 1468 1052 S   0,0  0,0   0:00.00 cron
11138 aegir     20   0  4176  576  484 S   0,0  0,0   0:00.00 sh
11139 root      20   0  4176  580  484 S   0,0  0,0   0:00.00 sh
11141 munin     20   0  4176  576  480 S   0,0  0,0   0:00.00 sh
11143 root      20   0  4240  324  248 S   0,0  0,0   0:00.00 xargs
11145 munin     20   0  4176  576  484 S   0,0  0,0   0:00.00 munin-cron
11166 anarcat   20   0 61364 2988 2468 R   0,0  0,0   0:00.00 notmuch
11167 anarcat   20   0 61364  752  212 R   0,0  0,0   0:00.00 notmuch
12004 www-data  20   0  292m  52m  37m S   0,0  0,7   0:09.05 apache2
12172 anarcat   20   0  4092  580  480 S   0,0  0,0   0:00.00 emacsclient
12465 spampd    20   0  149m  65m 2840 S   0,0  0,8   0:01.41 spampd
12468 spampd    20   0  150m  67m 2840 S   0,0  0,8   0:01.07 spampd
12895 anarcat   20   0  970m  51m  21m S   0,0  0,6   0:01.80 chromium
13761 anarcat   20   0     0    0    0 Z   0,0  0,0   0:00.00 git
16056 root      20   0 21800 1464  452 S   0,0  0,0   0:00.00 udevd
16057 root      20   0 21800 1340  332 S   0,0  0,0   0:00.00 udevd
16655 www-data  20   0  147m 8232  700 S   0,0  0,1   0:00.04 apache2
17006 anarcat   20   0  526m  29m  17m S   0,0  0,4   0:19.95 gmpc
17959 www-data  20   0 70828  24m 2172 S   0,0  0,3   1:22.37 munin-cgi-html
18082 anarcat   20   0 71776 8164 2820 S   0,0  0,1   0:00.12 xterm
18086 anarcat   20   0 23048 4664 1804 S   0,0  0,1   0:00.18 bash
18571 anarcat   20   0  258m  11m 8296 S   0,0  0,1   0:00.11 xfrun4
19692 spampd    20   0  148m  64m 2832 S   0,0  0,8   0:00.63 spampd
25574 anarcat   20   0  952m  31m  15m S   0,0  0,4   0:00.71 chromium
25590 anarcat   20   0     0    0    0 Z   0,0  0,0   0:41.75 chromium
"""]]

And here's the process tree:

[[!format sh """
$ ps -O start xf | grep git-annex
 8610 13:03:21 S ?        00:00:00 xterm -class UXTerm -title uxterm -u8
 8614 13:03:21 S pts/4    00:00:00  \_ bash
12172 13:13:15 S pts/4    00:00:00      \_ emacsclient --alternate-editor=vim -c install.hostmaster.inc
 8099 13:00:20 S ?        07:40:31 /usr/local/bin/git-annex assistant --startdelay=5s
 8107 13:00:20 S ?        00:00:00  \_ git --git-dir=/srv/books/.git --work-tree=/srv/books -c core.bare=false cat-file --batch
 8405 13:00:28 S ?        00:00:00  \_ git --git-dir=/srv/books/.git --work-tree=/srv/books -c core.bare=false cat-file --batch
 8407 13:00:28 S ?        00:00:00  \_ git --git-dir=/srv/books/.git --work-tree=/srv/books -c core.bare=false check-ignore -z --stdin --verbose --non-matching
 8045 13:00:11 S ?        07:35:36 /usr/local/bin/git-annex assistant --startdelay=5s
 8058 13:00:11 S ?        00:00:28  \_ git --git-dir=/srv/mp3/.git --work-tree=/srv/mp3 cat-file --batch
 8130 13:00:21 S ?        00:00:41  \_ git --git-dir=/srv/mp3/.git --work-tree=/srv/mp3 check-ignore -z --stdin --verbose --non-matching
 8236 13:00:24 S ?        00:00:00  \_ git --git-dir=/srv/mp3/.git --work-tree=/srv/mp3 check-attr -z --stdin annex.backend annex.numcopies --
 7107 12:58:40 S ?        00:00:02 /usr/lib/gvfs/gvfs-gdu-volume-monitor
 6525 12:57:25 S ?        07:29:13 /usr/local/bin/git-annex assistant --startdelay=5s
 6616 12:57:34 S ?        00:00:05  \_ git --git-dir=/srv/video/.git --work-tree=/srv/video cat-file --batch
 7285 12:58:45 S ?        00:00:01  \_ git --git-dir=/srv/video/.git --work-tree=/srv/video check-ignore -z --stdin --verbose --non-matching
 7434 12:58:51 S ?        00:00:00  \_ git --git-dir=/srv/video/.git --work-tree=/srv/video check-attr -z --stdin annex.backend annex.numcopies --
 4209 19:30:17 S ?        00:01:06  \_ /usr/local/bin/git-annex transferkeys --readfd 25 --writefd 24
 4240 19:30:17 S ?        00:00:00      \_ git --git-dir=/srv/video/.git --work-tree=/srv/video cat-file --batch
13761 23:56:38 Z ?        00:00:00      \_ [git] <defunct>
 6252 12:56:59 S ?        00:01:09 /usr/bin/emacs23
"""]]