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| author | Dmitry Vyukov <dvyukov@google.com> | 2024-11-20 08:43:01 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2024-11-20 11:33:58 +0000 |
| commit | 4fca1650892b7aba6ac219ce521543d411cf96ac (patch) | |
| tree | 668b39c6f72c509a44dabc13c0fcdcac386a1f81 /executor/snapshot.h | |
| parent | f56b4dcc82d7af38bf94d643c5750cf49a91a297 (diff) | |
executor: increase coverage buffer size
The coverage buffer frequently overflows.
We cannot increase it radically b/c they consume lots of memory
(num procs x num kcovs x buffer size) and lead to OOM kills
(at least with 8 procs and 2GB KASAN VM).
So increase it 2x and slightly reduce number of threads/kcov descriptors.
However, in snapshot mode we can be more aggressive (only 1 proc).
This reduces number of overflows by ~~2-4x depending on syscall.
Diffstat (limited to 'executor/snapshot.h')
| -rw-r--r-- | executor/snapshot.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/executor/snapshot.h b/executor/snapshot.h index 462fb2c56..059ac8222 100644 --- a/executor/snapshot.h +++ b/executor/snapshot.h @@ -147,7 +147,7 @@ constexpr size_t kOutputPopulate = 256 << 10; constexpr size_t kInputPopulate = 64 << 10; constexpr size_t kGlobalsPopulate = 4 << 10; constexpr size_t kDataPopulate = 8 << 10; -constexpr size_t kCoveragePopulate = 32 << 10; +constexpr size_t kCoveragePopulate = 64 << 10; constexpr size_t kThreadsPopulate = 2; static void SnapshotSetState(rpc::SnapshotState state) |