Alexander Motin f7e6dcc68d Relax zfs_vnops_read_chunk_size limitations ... It makes no sense to limit read size below the block size, since DMU will any way consume resources for the whole block, while the current zfs_vnops_read_chunk_size is only 1MB, which is smaller that maximum block size of 16MB. Plus in case of misaligned Uncached I/O the buffer may get evicted between the chunks, requiring repeating I/Os. On 64-bit platforms increase zfs_vnops_read_chunk_size to 32MB. It allows to less depend on speculative prefetcher if application requests specific size, first not waiting for prefetcher to start and later not prefetching more than needed. Also while there, we don't need to align reads to the chunk size, but only to a block size, which is smaller and so more forgiving. My profiles show ~4% of CPU time saving when reading 16MB blocks. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17415		2025-06-17 10:50:27 -07:00
..
abd.c	Export correct symbols for Lustre Direct I/O	2025-05-28 16:00:28 -07:00
aggsum.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
arc.c	ARC: parallel eviction	2025-06-17 10:50:26 -07:00
blake3_zfs.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
blkptr.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
bplist.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
bpobj.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
bptree.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
bqueue.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
brt.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
btree.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dataset_kstats.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dbuf_stats.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dbuf.c	Improve block cloning transactions accounting	2025-06-17 10:50:26 -07:00
ddt_log.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
ddt_stats.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
ddt_zap.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
ddt.c	tunables: fix spelling	2025-06-17 10:50:26 -07:00
dmu_diff.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dmu_direct.c	Export correct symbols for Lustre Direct I/O	2025-05-28 16:00:28 -07:00
dmu_object.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dmu_objset.c	dmu_objset_hold_flags() should call dsl_dataset_rele_flags() on error	2025-05-28 16:00:28 -07:00
dmu_recv.c	cred: properly pass and test creds on other threads (#17273)	2025-05-28 16:00:28 -07:00
dmu_redact.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
dmu_send.c	Fix 2 bugs in non-raw send with encryption	2025-05-28 16:00:28 -07:00
dmu_traverse.c	dmu_traverse: remove 'ignore_hole_birth' tunable alias	2025-06-17 10:50:27 -07:00
dmu_tx.c	Improve block cloning transactions accounting	2025-06-17 10:50:26 -07:00
dmu_zfetch.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dmu.c	Reduce zfs_dmu_offset_next_sync penalty	2025-06-17 10:50:26 -07:00
dnode_sync.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dnode.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_bookmark.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_crypt.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_dataset.c	Expose dataset encryption status via fast stat path	2025-06-17 10:49:40 -07:00
dsl_deadlist.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_deleg.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_destroy.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_dir.c	cred: properly pass and test creds on other threads (#17273)	2025-05-28 16:00:28 -07:00
dsl_pool.c	During pool export flush the ARC asynchronously	2025-06-17 10:50:26 -07:00
dsl_prop.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
dsl_scan.c	Cause zpool scan resume commands to get logged in history	2025-05-28 16:00:28 -07:00
dsl_synctask.c	txg: generalise txg_wait_synced_sig() to txg_wait_synced_flags() (#17284)	2025-05-28 16:00:28 -07:00
dsl_userhold.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
edonr_zfs.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
fm.c	tunables: ensure tunable and variable have same define gate	2025-06-17 10:50:26 -07:00
gzip.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
hkdf.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
lz4_zfs.c	SPDX: license tags: BSD-2-Clause	2025-04-16 09:59:44 -07:00
lz4.c	SPDX: license tags: BSD-2-Clause	2025-04-16 09:59:44 -07:00
lzjb.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
metaslab.c	Block remap for cloned blocks on device removal	2025-04-16 09:59:45 -07:00
mmp.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
multilist.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
objlist.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
pathname.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
range_tree.c	Fix off-by-one bug in range tree code	2025-06-17 10:49:40 -07:00
refcount.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
rrwlock.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
sa.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
sha2_zfs.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
skein_zfs.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
spa_checkpoint.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
spa_config.c	tunables: ensure tunable and variable have same define gate	2025-06-17 10:50:26 -07:00
spa_errlog.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
spa_history.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
spa_log_spacemap.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
spa_misc.c	During pool export flush the ARC asynchronously	2025-06-17 10:50:26 -07:00
spa_stats.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
spa.c	Set spa_final_txg in spa_unload()	2025-06-17 10:50:26 -07:00
space_map.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
space_reftree.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
THIRDPARTYLICENSE.cityhash	OpenZFS 8484 - Implement aggregate sum and use for arc counters	2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip	OpenZFS 8484 - Implement aggregate sum and use for arc counters	2018-06-06 09:35:59 -07:00
txg.c	txg: generalise txg_wait_synced_sig() to txg_wait_synced_flags() (#17284)	2025-05-28 16:00:28 -07:00
uberblock.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
unique.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_draid_rand.c	SPDX: license tags: LicenseRef-OpenZFS-ThirdParty-PublicDomain	2025-04-16 09:59:45 -07:00
vdev_draid.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_file.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_indirect_births.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_indirect_mapping.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_indirect.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
vdev_initialize.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
vdev_label.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_mirror.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_missing.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_queue.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_aarch64_neon_common.h	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_aarch64_neon.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_aarch64_neonx2.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_avx2.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_avx512bw.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_avx512f.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_impl.h	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_powerpc_altivec_common.h	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_powerpc_altivec.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_scalar.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_sse2.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math_ssse3.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_raidz_math.c	tunables: don't assert initialisation in impl getters	2025-06-17 10:50:26 -07:00
vdev_raidz.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
vdev_rebuild.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
vdev_removal.c	Fix null dereference in spa_vdev_remove_cancel_sync()	2025-05-28 16:00:28 -07:00
vdev_root.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
vdev_trim.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
vdev.c	During pool export flush the ARC asynchronously	2025-06-17 10:50:26 -07:00
zap_leaf.c	ZAP: Reduce leaf array and free chunks fragmentation	2025-05-28 16:00:28 -07:00
zap_micro.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zap.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zcp_get.c	zcp: get_prop: fix encryptionroot and encryption	2025-06-17 10:49:40 -07:00
zcp_global.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zcp_iter.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zcp_set.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zcp_synctask.c	cred: properly pass and test creds on other threads (#17273)	2025-05-28 16:00:28 -07:00
zcp.c	txg: generalise txg_wait_synced_sig() to txg_wait_synced_flags() (#17284)	2025-05-28 16:00:28 -07:00
zfeature.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_byteswap.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_chksum.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_fm.c	zed: Ensure spare activation after kernel-initiated device removal	2025-04-16 09:59:45 -07:00
zfs_fuid.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_impl.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_ioctl.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_log.c	zfs_log_write: only put the callback on the last itx	2025-06-17 10:50:26 -07:00
zfs_onexit.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_quota.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
zfs_ratelimit.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_replay.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
zfs_rlock.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zfs_sa.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
zfs_vnops.c	Relax zfs_vnops_read_chunk_size limitations	2025-06-17 10:50:27 -07:00
zfs_znode.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zil.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-04-16 09:59:45 -07:00
zio_checksum.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zio_compress.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zio_inject.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zio.c	Only interrupt active disk I/Os in failmode=continue	2025-06-17 10:49:40 -07:00
zle.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zrlock.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zthr.c	SPDX: license tags: CDDL-1.0	2025-04-16 09:59:44 -07:00
zvol.c	Improve block cloning transactions accounting	2025-06-17 10:50:26 -07:00