From: Omar Sandoval <osandov@osandov.com>
To: Josef Bacik <josef@toxicpanda.com>
Cc: linux-block@vger.kernel.org, osandov@fb.com, kernel-team@fb.com
Subject: Re: [PATCH] blktests: add a test for wbt
Date: Tue, 18 Dec 2018 16:20:17 -0800 [thread overview]
Message-ID: <20181219002017.GC12683@vader> (raw)
In-Reply-To: <20181212213824.26958-1-josef@toxicpanda.com>
On Wed, Dec 12, 2018 at 04:38:24PM -0500, Josef Bacik wrote:
> There's currently no tests to verify wbt is working properly, this patch
> fixes that. Simply run a varied workload and measure the read latencies
> with wbt off, and then turn it on and verify that the read latencies go
> down.
>
> Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Similar to the io.latency test. Test itself looks fine, but sometimes
fails with "Read latency too high, wbt not working?". Maybe these tests
just aren't well suited for running in QEMU?
prev parent reply other threads:[~2018-12-19 0:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-12 21:38 [PATCH] blktests: add a test for wbt Josef Bacik
2018-12-19 0:20 ` Omar Sandoval [this message]
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