From: Christoph Hellwig <hch@lst.de>
To: "Richard W.M. Jones" <rjones@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
"Martin K. Petersen" <martin.petersen@oracle.com>,
pbonzini@redhat.com
Subject: Re: Increased memory usage with scsi-mq
Date: Sat, 5 Aug 2017 15:39:54 +0200 [thread overview]
Message-ID: <20170805133954.GA17694@lst.de> (raw)
In-Reply-To: <20170805092704.GD20914@redhat.com>
For now can you apply this testing patch to the guest kernel?
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 9be211d68b15..0cbe2c882e1c 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -818,7 +818,7 @@ static struct scsi_host_template virtscsi_host_template_single = {
.eh_timed_out = virtscsi_eh_timed_out,
.slave_alloc = virtscsi_device_alloc,
- .can_queue = 1024,
+ .can_queue = 64,
.dma_boundary = UINT_MAX,
.use_clustering = ENABLE_CLUSTERING,
.target_alloc = virtscsi_target_alloc,
@@ -839,7 +839,7 @@ static struct scsi_host_template virtscsi_host_template_multi = {
.eh_timed_out = virtscsi_eh_timed_out,
.slave_alloc = virtscsi_device_alloc,
- .can_queue = 1024,
+ .can_queue = 64,
.dma_boundary = UINT_MAX,
.use_clustering = ENABLE_CLUSTERING,
.target_alloc = virtscsi_target_alloc,
@@ -983,7 +983,7 @@ static int virtscsi_probe(struct virtio_device *vdev)
shost->max_id = num_targets;
shost->max_channel = 0;
shost->max_cmd_len = VIRTIO_SCSI_CDB_SIZE;
- shost->nr_hw_queues = num_queues;
+ shost->nr_hw_queues = 1;
#ifdef CONFIG_BLK_DEV_INTEGRITY
if (virtio_has_feature(vdev, VIRTIO_SCSI_F_T10_PI)) {
next prev parent reply other threads:[~2017-08-05 13:39 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 [this message]
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
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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