Ubuntu
linux package

  1. Bug #1833281
  2. Comment #83

Comment 83 for bug 1833281

Revision history for this message
In , iam (iam-linux-kernel-bugs) wrote :

(In reply to Mikhail Novosyolov from comment #59)
> You mean that when e.g. Chromium browser writes its cache, it loads IO "up
> to 10x higher than EXT4"

Yes. This is also true for read operations, not only for write.

> and, when IO is also loaded by swapping, it causes
> microfreezes?

Yes, probably

> Are you sure that operations that cause write amplifications
> are not done in background?

I'm not sure, but people on Rosa forum blamed BTRFS for this bug. I'm pretty sure it's not directly tight with BTRFS, but write and read amplification may explain why lags are more severe with this FS.

Check https://arxiv.org/pdf/1707.08514.pdf and https://habr.com/ru/post/476414/