diff options
| author | Matthew Ahrens <[email protected]> | 2019-07-25 11:57:58 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2019-07-25 11:57:58 -0700 |
| commit | 1ff46825e232b3ad3414f60fab8dcba8ed17d778 (patch) | |
| tree | 60a3a9b0a0029b74374b72297cf23f5b536d1977 /include | |
| parent | 09276fde1ce7730804957da88350c893d635526b (diff) | |
Replace zf_rwlock with a mutex
The rwlock implementation on linux does not perform as well as mutexes.
We can realize a performance benefit by replacing the zf_rwlock with a
mutex. Local microbenchmarks show ~50% improvement, and over NFS we see
~5% improvement on several of the ZFS Performance Tests cases,
especially randwrite and seq_write.
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Tony Nguyen <[email protected]>
Reviewed-by: Olaf Faaland <[email protected]>
Signed-off-by: Matthew Ahrens <[email protected]>
Closes #9062
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/dmu_zfetch.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sys/dmu_zfetch.h b/include/sys/dmu_zfetch.h index 1e539086d..4303ab314 100644 --- a/include/sys/dmu_zfetch.h +++ b/include/sys/dmu_zfetch.h @@ -56,7 +56,7 @@ typedef struct zstream { } zstream_t; typedef struct zfetch { - krwlock_t zf_rwlock; /* protects zfetch structure */ + kmutex_t zf_lock; /* protects zfetch structure */ list_t zf_stream; /* list of zstream_t's */ struct dnode *zf_dnode; /* dnode that owns this zfetch */ } zfetch_t; |