Re: [RFC patch v1 0/3] qemu-file writing performance improving

2020-04-21 Thread Denis Plotnikov
Ping! On 13.04.2020 14:12, Denis Plotnikov wrote: Problem description: qcow2 internal snapshot saving time is too big on HDD ~ 25 sec When a qcow2 image is placed on a regular HDD and the image is openned with O_DIRECT the snapshot saving time is around 26 sec. The snapshot saving time can be

Re: [RFC patch v1 0/3] qemu-file writing performance improving

2020-04-13 Thread no-reply
Patchew URL: https://patchew.org/QEMU/1586776334-641239-1-git-send-email-dplotni...@virtuozzo.com/ Hi, This series failed the asan build test. Please find the testing commands and their output below. If you have Docker installed, you can probably reproduce it locally. === TEST SCRIPT BEGIN ==

Re: [RFC patch v1 0/3] qemu-file writing performance improving

2020-04-13 Thread Denis V. Lunev
On 4/13/20 2:12 PM, Denis Plotnikov wrote: > Problem description: qcow2 internal snapshot saving time is too big on HDD ~ > 25 sec > > When a qcow2 image is placed on a regular HDD and the image is openned with > O_DIRECT the snapshot saving time is around 26 sec. > The snapshot saving time can be

[RFC patch v1 0/3] qemu-file writing performance improving

2020-04-13 Thread Denis Plotnikov
Problem description: qcow2 internal snapshot saving time is too big on HDD ~ 25 sec When a qcow2 image is placed on a regular HDD and the image is openned with O_DIRECT the snapshot saving time is around 26 sec. The snapshot saving time can be 4 times sorter. The patch series propose the way to a