The following commit has been merged in the master branch:
commit 9ff45e73cf3d91d12f09e108e1267e37ae842c87
Author: Andrew Deason <[email protected]>
Date: Mon Jul 16 16:53:34 2018 -0500
afs: Skip bulkstat if stat cache looks full
Currently, afs_lookup() will try to prefetch dir entries for normal
dirs via bulkstat whenever multiple pids are reading that dir.
However, if we already have a lot of vcaches, ShakeLooseVCaches may be
struggling to limit the vcaches we already have. Entering
afs_DoBulkStat can make this worse, since we grab afs_xvcache
repeatedly, we may kick out other vcaches, and we'll possibly create
30 new vcaches that may not even be used before they're evicted.
To try to avoid this, skip running afs_DoBulkStat if it looks like the
stat cache is really full.
Change-Id: I1634530170a189f32cb962dd7df28f88bc758b71
Reviewed-on: https://gerrit.openafs.org/13256
Reviewed-by: Cheyenne Wills <[email protected]>
Tested-by: BuildBot <[email protected]>
Reviewed-by: Benjamin Kaduk <[email protected]>
src/afs/VNOPS/afs_vnop_lookup.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
--
OpenAFS Master Repository
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