Increase initial arena size to be more representative of real workload scenario and increase frequency of recreating the arena to avoid oom

1 files changed, 3 insertions, 3 deletions

diff --git a/test/cpp/microbenchmarks/bm_chttp2_hpack.cc b/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
index f160e77634..741825cada 100644
--- a/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
+++ b/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
@@ -457,7 +457,7 @@ static void BM_HpackParserParseHeader(benchmark::State& state) {
   std::vector<grpc_slice> benchmark_slices = Fixture::GetBenchmarkSlices();
   grpc_chttp2_hpack_parser p;
   grpc_chttp2_hpack_parser_init(&p);
-  const int kArenaSize = 4096;
+  const int kArenaSize = 4096 * 4096;
   gpr_arena* arena = gpr_arena_create(kArenaSize);
   p.on_header = OnHeader;
   p.on_header_user_data = arena;
@@ -469,8 +469,8 @@ static void BM_HpackParserParseHeader(benchmark::State& state) {
       GPR_ASSERT(GRPC_ERROR_NONE == grpc_chttp2_hpack_parser_parse(&p, slice));
     }
     grpc_core::ExecCtx::Get()->Flush();
-    // recreate arena every 64k iterations to avoid oom
-    if (0 == (state.iterations() & 0xffff)) {
+    // Recreate arena every 4k iterations to avoid oom
+    if (0 == (state.iterations() & 0xfff)) {
       gpr_arena_destroy(arena);
       arena = gpr_arena_create(kArenaSize);
     }