Re: [PATCH 4/4] block/io: improve savevm performance

2020-06-15 Thread Vladimir Sementsov-Ogievskiy
11.06.2020 20:11, Denis V. Lunev wrote: This patch does 2 standard basic things: - it creates intermediate buffer for all writes from QEMU migration code to block driver, - this buffer is sent to disk asynchronously, allowing several writes to run in parallel. Thus bdrv_vmstate_write() is

[PATCH 4/4] block/io: improve savevm performance

2020-06-11 Thread Denis V. Lunev
This patch does 2 standard basic things: - it creates intermediate buffer for all writes from QEMU migration code to block driver, - this buffer is sent to disk asynchronously, allowing several writes to run in parallel. Thus bdrv_vmstate_write() is becoming asynchronous. All pending