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  1. Proxmox 6.2 with older VMs

    Any news about this bug? I also have VM with freebsd 9.3 and will plan move to pve 6.2
  2. ZFS raid-1 data pool bad rand write performance

    True Done, thanks. As I see align must be in all level of system (ege block devices, vdev, zvol, vm's etc) Thank you for these important comments, and yes - it will be VM's with MariaDB (InnoDB engine) . All last tests was with ashift=13 on nvme pool. ~# zpool get all | grep ashift rpool...
  3. ZFS raid-1 data pool bad rand write performance

    Thnx, I was change default recordsize to 16K and have double penalty to performance randwrite Its very important for my VM's with DB's. Last question. Can I improve performance of my zpool nvme's mirror, if will add SLOG vdev as sata ssd? Or, I'll just have intact dirty data after power loss...
  4. ZFS raid-1 data pool bad rand write performance

    That's normal results 4,5 KIOPS for nvme in zfs mirror at 4k randwrite workloads? Specs says it must be 21 KIOPS. Can you turn me to right way in tweaking zfs for better randwrite 4k? And my pveperf fsyncs on sata ssd zfs mirror very low (356). ZFS root was installed by default from official...
  5. ZFS raid-1 data pool bad rand write performance

    Thanks. Fio with direct and sync Compare to zfs mirror on two sata ssd, where OS installed(sync+direct): # pveversion pve-manager/6.2-4/9824574a (running kernel: 5.4.41-1-pve) # pveperf CPU BOGOMIPS: 319387.52 REGEX/SECOND: 3132034 HD SIZE: 192.77 GB (rpool/ROOT/pve-1)...
  6. ZFS raid-1 data pool bad rand write performance

    I have hetzner AX61 server 2x sata ssd 240Gb for OS (zfs raid-1 uefi boot) 2x toshiba nvme u.2 KXD51RUE3T84 3.84Tb (for data) Test with fio data pool ZFS RAID-1 zfs pool ashift=12, atime=off, compression=off Why so huge difference between this results? 42MB/s and 306MB/s... Even...
  7. NVMe is slow down after few days (and other)

    Why you dont share your solution here?
  8. PVE 6.0 slow SSD RAID1 performance in Windows VM

    On windows vm CPU always 100% in use when fio is running (tasmanager) On debian vm CPU jumping from 35 to 55% (vm top) On host CPU jumping from 30 to 100% between fio and z_wr_iss (saw in top)
  9. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Without size fio cannot start on Windows VM: 4K-Q1T1-Rand-Write: you need to specify size= fio: pid=0, err=22/file:filesetup.c:1007, func=total_file_size, error=Invalid argument I set size=1G in your fio conf for Win VM, on host all rigt without size. And what i was get on single intel ssd on...
  10. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Thank, I'll retest it like you said. Can you post your full fio.config for this tests (host and vm)?
  11. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Thanks, waiting for it. Can the bottleneck be that the system is installed on the hard drive? All tests I made VMs was located on SSD storage, but OS PVE instaled on hdd hardware raid1.
  12. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Thnk for reply. Yes, I tried different state with vm disk (writeback, no cache, write trough, direct sync) the best performance in writeback mode, with nocache random read and write lower at twice then writeback I tried also some virto scisi drivers for win (the last and stable from fedora...
  13. PVE 6.0 slow SSD RAID1 performance in Windows VM

    The most problem its why I cannot reach such speeds in VM like on host pve?
  14. PVE 6.0 slow SSD RAID1 performance in Windows VM

    On LVM the same identical speeds and performance like on ext4.
  15. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Thnks. I was tested fio with settings like crystaldiskmark: On Windows VM 4k random read 19.6MB/s and random write 4k 17.8MB/s On Pve6 4k random read 35.0MB/s and random write 4k 67.8MB/s Thats dramaticaly low values for ssd in VM, which planed to be mssql ((
  16. PVE 6.0 slow SSD RAID1 performance in Windows VM

    barrier=0 in fstab also the same result (( Maybe CrystalDiskMark 6.02 is not actual in VM and I need alternative benchmarks? What the best tool for monitor real 4k random read and write in Windows VM? Thanks. Maybe fio, what parameters are right?
  17. PVE 6.0 slow SSD RAID1 performance in Windows VM

    I have tried nocache+iothread on virtio scsi single wit no luck too... Anyone had a similar situation?
  18. PVE 6.0 slow SSD RAID1 performance in Windows VM

    Hello. I have pve 6.0-7 on DELL R730 PVE installed on raid1 hdd and have ssd raid1 for mssql VMs and sql data SSD model: 2 x SSDSC2KB480G8R Dell Certified Intel S4x00/D3-S4x10 Series SSDs (Intel d3 s4510 480Gb) On ssd raid1 created gpt partition in ext4 Created Windows 2016 Standart VM as...
  19. Limitations of free PVE, How many hardware sockets i can use?

    Oh thnx for reply, man. I cannot find any information about this on official wiki((

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