diff options
| author | Alexander Motin <[email protected]> | 2023-07-21 14:51:47 -0400 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-07-21 11:51:47 -0700 |
| commit | 34b3d498a965451f2c21e9652a99952ed6e93c59 (patch) | |
| tree | 47dfb2e7d6e3ddb436bf60d82a4a10c1b24fffbf /include/sys/dmu_zfetch.h | |
| parent | 28430b51e3e2387e6f36d5b4ee5b30ef33095993 (diff) | |
Adjust prefetch parameters.
- Reduce maximum prefetch distance for 32bit platforms to 8MB as it
was previously. Those systems didn't grow much probably, so better
stay conservative there.
- Retire array_rd_sz tunable, blocking prefetch for large requests.
We should not penalize applications trying to be more efficient. The
speculative prefetcher by itself has reasonable distance limits, and
1MB is not much at all these days.
Reviewed-by: Allan Jude <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Alexander Motin <[email protected]>
Sponsored by: iXsystems, Inc.
Closes #15072
Diffstat (limited to 'include/sys/dmu_zfetch.h')
| -rw-r--r-- | include/sys/dmu_zfetch.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/sys/dmu_zfetch.h b/include/sys/dmu_zfetch.h index 0fbc3bacf..f00e13cf0 100644 --- a/include/sys/dmu_zfetch.h +++ b/include/sys/dmu_zfetch.h @@ -36,8 +36,6 @@ extern "C" { #endif -extern uint64_t zfetch_array_rd_sz; - struct dnode; /* so we can reference dnode */ typedef struct zfetch { |