Thank you for your reply. Let me explain my final goal. I would like to evaluate my server thermal restriction, so I want all my components to consume as much power as possible. When I run intel ptat I see that RAM consumes 370 Watts of power however when I start to stress my 12 nvme with fio RAM consumes only 215 Watt of power. I failed to run both ptat and fio, since ptat takes all CPU time. On Wed, Sep 11, 2024 at 2:49 AM Damien Le Moal <dlemoal@xxxxxxxxxx> wrote: > > 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 > -- Best Regards, Anatoly
