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IDProjectCategoryView StatusLast Update
0004786Rocky-Linux-9fiopublic2024-03-01 02:07
Reportertyree chow Assigned To 
Status newResolutionopen 
Summary0004786: The performance of rantrim on nvme ssd is significantly worse than upstream linux kernel.
DescriptionRecently, I replaced my server's kernel with rocky's 5.14.0-162.18.1.el9_1 (downloaded from ).
Then I used Fio to perform stress testing on my NVME SSD and compared the performance with Upstream's Linux 5.14.0 kernel.
When using the randtrim command, I found that randtrim performed significantly lower in rocky than upstream.
The result of IOPS of randtrim on Rocky's 5.13 is around 50k while it is 240k in upstream's kernel.
Steps To ReproduceThe running command of fio is below:
fio -filename=/dev/nvme0n1 -direct=1 -ioengine=libaio -rw=randtrim -bs=4k -iodepth=64 -numjobs=8 -group_reporting -name=randtrimfob --norandommap --randrepeat=0 --ramp_time=5 -runtime=30
TagsNo tags attached.


gao wh

gao wh

2024-03-01 02:07

reporter   ~0006238

while you use "-iodepth=64 -numjobs=8", os use "-iodepth=1 -numjobs=1" actually

Issue History

Date Modified Username Field Change
2023-11-17 09:47 tyree chow New Issue
2024-03-01 02:07 gao wh Note Added: 0006238