From: Christoph Hellwig <hch@lst.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Richard W.M. Jones" <rjones@redhat.com>,
Christoph Hellwig <hch@lst.de>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: Increased memory usage with scsi-mq
Date: Wed, 9 Aug 2017 18:01:11 +0200 [thread overview]
Message-ID: <20170809160111.GC3141@lst.de> (raw)
In-Reply-To: <ffc29e81-ff6b-7132-2e90-86b5632098fb@redhat.com>
On Mon, Aug 07, 2017 at 03:07:48PM +0200, Paolo Bonzini wrote:
> can_queue should depend on the virtqueue size, which unfortunately can
> vary for each virtio-scsi device in theory. The virtqueue size is
> retrieved by drivers/virtio prior to calling vring_create_virtqueue, and
> in QEMU it is the second argument to virtio_add_queue.
Why is that unfortunate? We don't even have to set can_queue in
the host template, we can dynamically set it on per-host basis.
next prev parent reply other threads:[~2017-08-09 16:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-04 21:00 Increased memory usage with scsi-mq Richard W.M. Jones
2017-08-05 8:44 ` Christoph Hellwig
2017-08-05 9:27 ` Richard W.M. Jones
2017-08-05 13:39 ` Christoph Hellwig
2017-08-05 15:51 ` Richard W.M. Jones
2017-08-07 12:11 ` Paolo Bonzini
2017-08-07 12:27 ` Richard W.M. Jones
2017-08-07 13:07 ` Paolo Bonzini
2017-08-09 16:01 ` Christoph Hellwig [this message]
2017-08-09 16:50 ` Paolo Bonzini
2017-08-10 12:22 ` Richard W.M. Jones
2017-08-10 12:53 ` Paolo Bonzini
2017-08-10 14:16 ` Richard W.M. Jones
2017-08-10 14:30 ` Paolo Bonzini
2017-08-10 15:40 ` Richard W.M. Jones
2017-08-10 16:04 ` Paolo Bonzini
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