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@zedicus : i just tested a standard grade samsung NVMe M2 HDD and it gives 270 fyncs per second and as it is nearly 60% full even iops are far...
You are using ZFS. Best results we had with ZFS are obtained with simple SSD + HBA.
May i ask you why you based your perf test on fsync() perfs...
If you have 8 disks and uses raid 10 (1+0) you will have 4 disks per sub array netting you a 4TB data. (2+2) raid 1 and (2+2) raid striped so 4...
@Alwin here are the raw perfs of the 64xSAS pool
Destroyed the pools, created only an HDD pool
Issued a lot of write threads :
rados bench -p...
I will read this carefully
Hello @kaltsi, it's a tough one.
Slow requests can be caused by network issues, disks issues, or event controller issues as stated by @Alwin....
Yes @Alwin you are right,
We will need to tweak this to get a more 'real life' scenario.
In fact it is written 'cache' in Ceph's documentation...
So here are the results :
I/Os are issued on SSD pools :
rados bench -p cache 60 write -b 4M -t 16
sec Cur ops started finished avg MB/s...
@Alwin no i just tested the vm. Il will use the same commands you used in the official benchmark and post the results.
I did it like this :
one pool with all the SSD one pool with all the HDD
Then assign the SSD pool named cache to the HDD pool named data
Here's a short summary of some tests led in our lab.
Server platform is 4x :
2x Intel Silver 4114...
Ok get it : Client is also a VM => Server is a Win 10 VM : RDP from client to Win 10 is a disaster.
I just fired up a WIN10 VM , stock, no...
I guess transferring to the hypervisor is not quite the same as loading the guest. As RDP is very sensitive to network conditions variations, i...
Have you tried to iperf from the client to the server ? Might have some unexpected results there
May i ask what is the screen resolution you are using client side ? and what kind of RDP client is used too ?
Hi everyone, Hi Darren, you are right,ZFS is not the issue, hardware is.
Maintaining an HCL is going to be tough due to all the setup options...