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authorGravatar Karel Zak <kzak@redhat.com>2011-02-04 22:44:31 +0100
committerGravatar Carl Worth <cworth@cworth.org>2011-03-10 11:48:33 -0800
commitb0006b6ea2357572637b0c7946dfd074cfe18178 (patch)
treefcf19381097dc453c1dfe64ea5431d02b34e8539 /gmime-filter-headers.h
parent2d6718b837b11b48d6b6ce1ae3f863591d5b651a (diff)
new: read db_files and db_subdirs only if mtime changed
The db_files and db_subdirs are unnecessary for unchanged directories. maildir with 10000 e-mails: old version: $ time ./notmuch new No new mail. real 0m0.053s user 0m0.028s sys 0m0.026s new version: $ time ./notmuch new No new mail. real 0m0.032s user 0m0.009s sys 0m0.023s Signed-off-by: Karel Zak <kzak@redhat.com> Reviewed-by: Austin Clements <amdragon@mit.edu> Looks good (faster than, but provably equivalent to the original code! notmuch_directory_get_child_* are side-effect free, db_files/db_subdirs aren't used between where they were set in the old code and where they are set in the new code, and db_files/db_subdirs are initialized to NULL when declared). Another timing data point: Old code: ./notmuch new 0.77s user 0.28s system 99% cpu 1.051 total New code: ./notmuch new 0.09s user 0.27s system 98% cpu 0.368 total
Diffstat (limited to 'gmime-filter-headers.h')
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