Vadim Rozenfeld

Hi Andreas, can you check the partition alignment? fdisk -l -u /dev/sdc7 on Linux. on Window you need to run msinfo32.exe, then go to Components > Storage > Disks, and...

Can you check Windows Event Log and see if there is any error reported by disk subsystem? I can only guess that LUKS or LIO/vhost might affect some of disk...

@ssudhakarp Can you please post output from qemu "info qtree" command. I mostly interested in vhost-scsi-pci related information? Can you give a try to virtio-scsi-pci instead of vhost? And what...

Hi Mario, Do you see the same level of difference for both sequential and random reads/writes? Or even better, can you post the performance results for both virtio-win and flexvdi...

I usual use IoMeter for heavy performance testing, but decided to give a try to CrystalDiskMark this time :) My testing system is like following: Kernel: 5.3.16-300.fc31.x86_64 QEMU: 4.1.50v4.1.0-2287-gd0f90e1423 Quest:...

Some more results with HV time source turned on : On top of ram disk: ------------------------------------------------------------------------------ CrystalDiskMark 7.0.0 (C) 2007-2019 hiyohiyo Crystal Dew World: https://crystalmark.info/ ------------------------------------------------------------------------------ * MB/s = 1,000,000...

Thank you for reporting this issue. I'm working on adding trim handler to viostor driver. Meanwhile, if trim support is needed, you can try switching to vioscsi (virtio-scsi backend). Best...

Strange. It should work. At least with qcow2 images. I rechecked it again with upstream b172 drivers. My setup is as following: qemu 4.0.92v4.1.0-rc2 kernel 5.1.16-200.fc29.x86_64 guest en_windows_10_business_editions_version_1903_x86_dvd_ca4f0f49.iso qemu command...

@kevinoid It was not clear if #399 is enough to make UNMAP(TRIM) working properly or any other changes will be requires, This is the reason why I called it "preliminary"....

@life777eternal Can you please zip the crash dump file and share it through dropbox or google drive ? Thanks, Vadim.