[Bug 216007] XFS hangs in iowait when extracting large number of files

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216007

--- Comment #5 from Dave Chinner (david@fromorbit.com) ---
On Sat, May 21, 2022 at 05:14:36AM +0000, bugzilla-daemon@kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=216007
> 
> --- Comment #4 from Peter Pavlisko (bugzkernelorg8392@araxon.sk) ---
> > What sort of storage subsystem does this machine have? If it's a spinning
> > disk then you've probably just filled memory
> 
> Yes, all the disks are classic spinning CMR disks. But, out of all file
> systems
> tried, only XFS is doing this on the test machine. I can trigger this
> behavior
> every time. And kernels from 5.10 and bellow still work, even with my
> non-standard .config.
> 
> Here is the memory situation when it is stuck:
> 
> ftp-back ~ # free
>                total        used        free      shared  buff/cache  
>                available
> Mem:         3995528      175872       69240         416     3750416    
> 3763584

Doesn't tell us a whole lot except for "no free memory to allocate
without reclaim". /proc/meminfo, /proc/vmstat and /proc/slabinfo
would tell us a lot more.

Also, knowing if you've tweaked things like dirty ratios, etc would
also be helpful...

> This may not be a XFS bug, but so far only XFS seems to suffer from it.

Not that uncommon, really. XFS puts a different load on the memory
allocation/reclaim and cache subsystems compared to other
filesystems, so XFS tends to trip over bugs that others don't.

Cheers,

Dave.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.