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Message-ID: <206b68b7-e52c-969c-a08f-a309a86c1ba6@acm.org>
Date:   Wed, 5 Oct 2022 14:03:24 -0700
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Subject: Re: again? - Write I/O queue hangup at random on recent Linus'
 kernels
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To:     Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>,
        linux-block@vger.kernel.org
References: <CAK8fFZ5w8CC7ez50dEd9nGJpc_c-ubJLk3+77d7Y5qN1pMkfRQ@mail.gmail.com>
From:   Bart Van Assche <bvanassche@acm.org>
In-Reply-To: <CAK8fFZ5w8CC7ez50dEd9nGJpc_c-ubJLk3+77d7Y5qN1pMkfRQ@mail.gmail.com>
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On 10/5/22 12:43, Jaroslav Pulchart wrote:
> I'm investigating a queue hangup issue of our databases running on the
> 5.19.y kernel.
> 
> I found "Write I/O queue hangup at random on recent Linus' kernels"
> thread (https://www.spinics.net/lists/linux-bcache/msg10781.html)
> already fixed some time.
That message mentions WBT (write back throttling). Is WBT enabled in 
your kernel? If so, does disabling it help?

Thanks,

Bart.