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Date: Tue, 9 Feb 2016 19:36:10 -0700
Message-ID: <CAJCQCtSwLqp2--DNiJeJqJ0qWXzkP2cKKAAMid-VuNdEqNTPMQ@mail.gmail.com>
Subject: Re: btrfs-progs 4.4 re-balance of RAID6 is very slow / limited to one
 cpu core?
From: Chris Murphy <lists@colorremedies.com>
Cc: Christian Rohmann <crohmann@netcologne.de>,
        "Austin S. Hemmelgarn" <ahferroin7@gmail.com>,
        linux-btrfs <linux-btrfs@vger.kernel.org>
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This could also be interesting. It means canceling the balance in
progress; waiting some time; and then cancelling it again to get
results to return.

# perf stat -B btrfs balance start /

## Again, single device example, balancing at expected performance.
http://fpaste.org/320562/55071438/

I didn't try this but, it looks like it'd be a variation on the above,
attaching to a running balance:

# perf stat -B -p <pidforbalance> sleep 60

Anyway...

Chris Murphy