Re: write(2) taking 4s. (Was: Memory leak?)

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2011-07-16 13:12:10 +0100, Stephane Chazelas:
> Still on my btrfs-based backup system. I still see one BUG()
> reached in btrfs-fixup per boot time, no memory exhaustion
> anymore. There is now however something new: write performance
> is down to a few bytes per second.
[...]

The condition that was causing that seems to have cleared by
itself this morning before 4am.

flush-btrfs-1 and sync are still in D state.

Can't really tell what cleared it. Could be when the first of
the rsyncs ended as all the other ones (and ntfsclones from nbd
devices) ended soon after

Cheers,
Stephane

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