Re: how to fully load RAM while stressing SSD using fio

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On 9/11/24 03:01, Anatoly Belanovsky wrote:
> Hello,
> 
> I would like to stress my SSD and RAM with fio and I use command
> 
> fio --direct=1 --rw=randrw --rwmixread=90 --rwmixwrite=10 --bs=4k
> --ioengine=libaio --iodepth=256 --numjobs=2 --time_based
> --group_reporting --eta-newline=1 --runtime 12h --name=job1
> --new_group --filename=/dev/nvme0n1
> 
> I noticed that while I am stressing it with fio the power consumption
> of RAM is much less than if I use other stress utilities like intel
> ptat or y-cruncher.
> 
> How I can run fio to use full power capacity of RAM? I tried to
> increase numjobs but it didn't help.

Remove direct=1. That will add lots of memory copies. But then you may not see
the real speed of your drive due to this added overhead.

-- 
Damien Le Moal
Western Digital Research





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