Re: [fuse-devel] Horrible mmap write performance (kernel writeback issue?)
From: Tejun Heo
Date: Wed Mar 30 2016 - 14:47:40 EST
On Mon, Mar 28, 2016 at 09:45:53PM +0200, Miklos Szeredi wrote:
> >> commit 947e9762a8ddefda38aa21e249e6a4fec215cd12
> >> Author: Tejun Heo <tj@xxxxxxxxxx>
> >> Date: Fri May 22 18:23:32 2015 -0400
> >> writeback: update wb_over_bg_thresh() to use wb_domain aware operations
> Any idea why this commit stalls fuse mmap writes?
> Here's the start of the this thread:
Hmmm... cgroup writeback support shouldn't affect fuse at all as the
backing device doesn't enable cgroup support. I probably made some
silly mistake. Is there a simple reproducer I can play with?