Alexander Motin b7f919d228 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		2025-06-04 11:24:15 -04:00
..
abd.c	Export correct symbols for Lustre Direct I/O	2025-04-24 13:55:21 -04:00
aggsum.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
arc.c	tunables: ensure tunable and variable have same define gate	2025-05-28 16:50:22 -07:00
blake3_zfs.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
blkptr.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
bplist.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
bpobj.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
bptree.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
bqueue.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
brt.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
btree.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dataset_kstats.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dbuf_stats.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dbuf.c	ARC: Notify dbuf cache about target size reduction	2025-05-14 10:34:14 -04:00
ddt_log.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
ddt_stats.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
ddt_zap.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
ddt.c	Improve allocation fallback handling	2025-05-31 19:12:16 -04:00
dmu_diff.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dmu_direct.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
dmu_object.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dmu_objset.c	dmu_objset_hold_flags() should call dsl_dataset_rele_flags() on error	2025-05-20 08:35:45 -07:00
dmu_recv.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
dmu_redact.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
dmu_send.c	Fix 2 bugs in non-raw send with encryption	2025-05-19 09:55:00 -07:00
dmu_traverse.c	dmu_traverse: remove 'ignore_hole_birth' tunable alias	2025-05-27 15:05:09 -07:00
dmu_tx.c	dmu_tx: break tx assign/wait when pool suspends	2025-05-28 10:28:51 -07:00
dmu_zfetch.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
dmu.c	FreeBSD: Add posix_fadvise(POSIX_FADV_WILLNEED) support	2025-05-29 09:34:07 -04:00
dnode_sync.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
dnode.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
dsl_bookmark.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_crypt.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_dataset.c	Expose dataset encryption status via fast stat path	2025-05-26 22:11:03 -04:00
dsl_deadlist.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_deleg.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_destroy.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_dir.c	cred: properly pass and test creds on other threads (#17273)	2025-04-29 16:27:48 -07:00
dsl_pool.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_prop.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
dsl_scan.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
dsl_synctask.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
dsl_userhold.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
edonr_zfs.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
fm.c	tunables: ensure tunable and variable have same define gate	2025-05-28 16:50:22 -07:00
gzip.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
hkdf.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
lz4_zfs.c	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
lz4.c	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
lzjb.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
metaslab.c	Include class name into struct metaslab_class	2025-06-03 11:12:59 -04:00
mmp.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
multilist.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
objlist.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
pathname.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
range_tree.c	Fix off-by-one bug in range tree code	2025-05-23 10:33:33 -04:00
refcount.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
rrwlock.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
sa.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
sha2_zfs.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
skein_zfs.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
spa_checkpoint.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
spa_config.c	tunables: ensure tunable and variable have same define gate	2025-05-28 16:50:22 -07:00
spa_errlog.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
spa_history.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-03-18 16:04:22 -07:00
spa_log_spacemap.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
spa_misc.c	Improve allocation fallback handling	2025-05-31 19:12:16 -04:00
spa_stats.c	Wire O_DIRECT also to Uncached I/O (#17218)	2025-05-13 14:26:55 -07:00
spa.c	Include class name into struct metaslab_class	2025-06-03 11:12:59 -04:00
space_map.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
space_reftree.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -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_wait_synced_flags: add TXG_WAIT_SUSPEND flag to not wait if pool suspended	2025-05-28 10:27:46 -07:00
uberblock.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
unique.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_draid_rand.c	SPDX: license tags: LicenseRef-OpenZFS-ThirdParty-PublicDomain	2025-03-13 17:57:31 -07:00
vdev_draid.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
vdev_file.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
vdev_indirect_births.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_indirect_mapping.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_indirect.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev_initialize.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev_label.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_mirror.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
vdev_missing.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
vdev_queue.c	Unified allocation throttling (#17020)	2025-03-24 09:25:01 -07:00
vdev_raidz_math_aarch64_neon_common.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_aarch64_neon.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_aarch64_neonx2.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_avx2.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_avx512bw.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_avx512f.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_impl.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_powerpc_altivec_common.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_powerpc_altivec.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_scalar.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_sse2.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math_ssse3.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vdev_raidz_math.c	tunables: don't assert initialisation in impl getters	2025-05-28 16:50:22 -07:00
vdev_raidz.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev_rebuild.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev_removal.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev_root.c	Implement allocation size ranges and use for gang leaves (#17111)	2025-05-02 15:32:18 -07:00
vdev_trim.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
vdev.c	vdev: skip faulting disks pending removal	2025-05-30 09:14:37 -07:00
zap_leaf.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zap_micro.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zap.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zcp_get.c	zcp: get_prop: fix encryptionroot and encryption	2025-05-27 20:04:37 -04:00
zcp_global.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zcp_iter.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zcp_set.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zcp_synctask.c	cred: properly pass and test creds on other threads (#17273)	2025-04-29 16:27:48 -07:00
zcp.c	txg: generalise txg_wait_synced_sig() to txg_wait_synced_flags() (#17284)	2025-05-02 15:29:50 -07:00
zfeature.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_byteswap.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_chksum.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_debug_common.c	nvlist: Add nvlist_snprintf() and zfs_dbgmsg_nvlist()	2025-04-18 09:22:16 -04:00
zfs_fm.c	events: include zio type in IO error reports	2025-05-30 10:29:29 -04:00
zfs_fuid.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_impl.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_ioctl.c	Show default quotas in zfs userspace tools	2025-04-03 10:36:45 -07:00
zfs_log.c	zfs_log: make zfs_immediate_write_sz uint	2025-05-28 16:50:22 -07:00
zfs_onexit.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_quota.c	Show default quotas in zfs userspace tools	2025-04-03 10:36:45 -07:00
zfs_ratelimit.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_replay.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-03-18 16:04:22 -07:00
zfs_rlock.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zfs_sa.c	dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143)	2025-03-18 16:04:22 -07:00
zfs_vnops.c	Relax zfs_vnops_read_chunk_size limitations	2025-06-04 11:24:15 -04:00
zfs_znode.c	Add default user/group/project quota properties	2025-04-03 10:35:22 -07:00
zil.c	dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND	2025-05-28 10:28:59 -07:00
zio_checksum.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zio_compress.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zio_inject.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zio.c	Include class name into struct metaslab_class	2025-06-03 11:12:59 -04:00
zle.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zrlock.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zthr.c	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zvol.c	ZVOL: Make zvol_volmode module parameter platform-independent	2025-05-31 19:09:50 -04:00