[Bug 1875762] Re: Poor disk performance on sparse VMDKs

2020-05-04 Thread Alan Murtagh
Thanks Stefan. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1875762 Title: Poor disk performance on sparse VMDKs Status in QEMU: New Bug description: Found in QEMU 4.1, and reproduced on mas

[Bug 1875762] [NEW] Poor disk performance on sparse VMDKs

2020-04-28 Thread Alan Murtagh
Public bug reported: Found in QEMU 4.1, and reproduced on master. QEMU appears to suffer from remarkably poor disk performance when writing to sparse-extent VMDKs. Of course it's to be expected that allocation takes time and sparse VMDKs peform worse than allocated VMDKs, but surely not on the or