Proxmox vs ESXi Storage Performance - Tuning iSCSI?

[PwrBank]

You should increase benchmark size as I wrote and you will see that your iscsi peak advances go away.
Edit: It's not uncommon for a pve cluster to have >100 machines (vm or lxc) and a multiple of 10TB of data and you cannot exapolate benchmark results of 8 to 16 GB based on your prefered iscsi protocol to eg 16TB in reality.

This is using 128GB test files, I knocked up everything to be WAY above the RAM available to the client and host.

What filesystem do you use under the hood of your nfs ?

Whatever Pure's file system is, which I'm sure is some proprietary erasure coded file system.

 

[waltar]

This is using 128GB test files

"--numjobs=8 --size=1G" = is 8G in fio line1
"--numjobs=8 --size=1G --iodepth=64" = is 8G in fio line2
"--size=1G --iodepth=64" = is 1G in fio line3
"--numjobs=8 --size=2G --iodepth=64" = is 16G in fio line4

Whatever Pure's file system is, which I'm sure is some proprietary erasure coded file system.

Looks like pure block storage from X20 datasheet without filesystem which is done on volume at host if wanted.
https://www.purestorage.com/content/dam/pdf/de-de/datasheets/ds-flasharray-x-de-de.pdf

 

[PwrBank]

"--numjobs=8 --size=1G" = is 8G in fio line1
"--numjobs=8 --size=1G --iodepth=64" = is 8G in fio line2
"--size=1G --iodepth=64" = is 1G in fio line3
"--numjobs=8 --size=2G --iodepth=64" = is 16G in fio line4

Right, I changed those to --size=128G on all the scripts.

 

[PwrBank]

Oh, and I also bumped the time up from 60s to 360s, just to make sure it was all warmed up.