Hi,
Sure, I will try the fio as requested by Marc Roos. I will be onsite
again monday/tuesday. If you have a good way to test/show what you
describe below, don't hesitate to post it here.
I'll try it when I have the time.
Are you saying that the write performance becomes bad (90MB/sec) for
long lasting *continuous* writing? (after filling up a write buffer or such)
But given time to empty that buffer again, it should again write with
the normal higher speed?
So in applications with enough variation between reading and writing,
they could still perform good enough?
MJ
On 3/6/20 2:06 PM, vitalif@xxxxxxxxxx wrote:
Hi,
Current QLC drives are total shit in terms of steady-state performance.
First 10-100 GB of data is written into the SLC cache which is fast, but
then the drive switches to its QLC memory and even the linear write
performance drops to ~90 MB/s which is actually worse than with HDDs!
So, try to run a long linear write test and check the performance after
writing a lot of data.
Last monday I performed a quick test with those two disks already,
probably not that relevant, but posting it anyway:
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