Tony Nguyen b78d32cc25 Improve write performance by using dmu_read_by_dnode() ...

In zfs_log_write(), we can use dmu_read_by_dnode() rather than
dmu_read() thus avoiding unnecessary dnode_hold() calls.

We get a 2-5% performance gain for large sequential_writes tests, >=128K
writes to files with recordsize=8K.

Testing done on Ubuntu 18.04 with 4.15 kernel, 8vCPUs and SSD storage on
VMware ESX.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Nguyen <tony.nguyen@delphix.com>
Closes #9156

2020-01-22 13:48:57 -08:00

..

avl

Update build system and packaging

2018-05-29 16:00:33 -07:00

icp

Minor style cleanup

2019-09-25 11:27:49 -07:00

lua

Linux 5.3: Fix switch() fall though compiler errors

2019-09-25 11:27:50 -07:00

nvpair

Use NV_ENCODE_NATIVE for nvlist encoding variable

2019-04-26 11:24:31 -07:00

spl

Drop KMC_NOEMERGENCY

2020-01-22 13:48:57 -08:00

unicode

Update build system and packaging

2018-05-29 16:00:33 -07:00

zcommon

Minor style cleanup

2019-09-25 11:27:49 -07:00

zfs

Improve write performance by using dmu_read_by_dnode()

2020-01-22 13:48:57 -08:00

.gitignore

Prepare SPL repo to merge with ZFS repo

2018-05-29 14:51:39 -07:00

Makefile.in

Linux 5.3 compat: Makefile subdir-m no longer supported

2019-09-25 11:27:50 -07:00