* Weird Throughput Pattern in Fio
@ 2021-09-21 8:03 Houkun Zhu
0 siblings, 0 replies; only message in thread
From: Houkun Zhu @ 2021-09-21 8:03 UTC (permalink / raw)
To: fio
Hi guys,
I’m using Fio to generate workloads for Lustre. But I found a weird throughput pattern, it always has good performance at the beginning and then drops and remain at lower speed. As it is shown in this figure from telegraf collected data (https://ibb.co/Mc4hw4B) , the throughput suddenly drops and remains at that low value all the time. Did I set something wrong?
PS, my workload settings:
[global]
fadvise_hint=0
direct=1
numjobs=6
iodepth=32
ioengine=libaio
directory=/mnt/lustrefs
size=100G
[job]
runtime=2d
time_based=1
rw=randrw
bs=4k
rwmixread=90
------------------------------------------------
Best regards,
Houkun
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