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[Fwd: xfs_inode slab]

To: xfs@xxxxxxxxxxx
Subject: [Fwd: xfs_inode slab]
From: "Nikolay S." <nowhere@xxxxxxxxxxxxxxxx>
Date: Sun, 10 Feb 2013 11:18:46 +0400
Delivered-to: xfs@xxxxxxxxxxx
Please, ignore the previous message, it was sent by an accident.

> Hello there,
> 
> I see some bad behavior of xfs, which I can reproduce:
> 
> 1. Create some directories and files on xfs volume (I use ~800000 files
> and 80000 directories on 4GB RAM system)
> 2. Create workload, that produces light page cache pressure (say, 4-8
> MB/s) and while pagecache eats all of free ram. I use the code from [1])
> 3. Stat all the objects on xfs volume
> 
> The result depends on kernel version:
>       3.2) See kswapd struggling through D-state for several minutes.
>       3.7) See kswapd struggling through D-state forever
> 
> Same steps on ext4 do not produce any bad results
> 
> --
> [1]   https://bugzilla.kernel.org/show_bug.cgi?id=53031
> 
> [2]
> 


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