Hi,
I have 4 x DELL R630 servers with exact same specs
I installed Intel Optane SSDPED1K375GA in all
When comparing fio performance ( both read and write), when is lower than the other 3
( see below - just read)
Any suggestions as to what to check/fix ?
BAD server
[root@osd04 ~]# fio --filename=/dev/nvme0n1 --direct=1 --sync=1 --rw=read --bs=4k --numjobs=100 --iodepth=1 --runtime=60 --time_based --group_reporting --name=journal-test
journal-test: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.1
Starting 100 processes
Jobs: 100 (f=100): [R(100)][100.0%][r=2166MiB/s,w=0KiB/s][r=554k,w=0 IOPS][eta 00m:00s]
GOOD server
[root@osd02 ~]# fio --filename=/dev/nvme0n1 --direct=1 --sync=1 --rw=read --bs=4k --numjobs=100 --iodepth=1 --runtime=60 --time_based --group_reporting --name=journal-test
journal-test: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.1
Starting 100 processes
Jobs: 100 (f=100): [R(100)][100.0%][r=2278MiB/s,w=0KiB/s][r=583k,w=0 IOPS][eta 00m:00s]
many thanks
steven
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