Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 19 Feb 2018 10:42:08 +0000
From:      Laurence Pawling <laurence.pawling@globalsign.com>
To:        =?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@citrix.com>
Cc:        "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, David King <david.king@globalsign.com>, Vlad Galu <vlad.galu@globalsign.com>
Subject:   Re: multi-vCPU networking issues as client OS under Xen
Message-ID:  <D19A161B-A26C-4CB8-8CF8-45A1195433C7@globalsign.com>
In-Reply-To: <20180219100558.adgb6m5ukdfvxehp@MacBook-Pro-de-Roger.local>
References:  <D1AF75E7-49F9-4628-8B26-3ACB64994C97@globalsign.com> <20180219100558.adgb6m5ukdfvxehp@MacBook-Pro-de-Roger.local>

next in thread | previous in thread | raw e-mail | index | archive | help
--B_3601881728_1046608566
Content-type: text/plain;
	charset="UTF-8"
Content-transfer-encoding: 7bit

>    When using >1 vCPUs can you set hw.xn.num_queues=1 on
>    /boot/loader.conf and try to reproduce the issue?
>    
>    I'm afraid this is rather related to multiqueue (which is only used
>    if >1 vCPUs).
>    
>    Thanks, Roger.

Roger - thanks for your quick reply, this is confirmed. Setting hw.xn.num_queues=1 on the server VM when vCPUs > 1 prevents the issue.

For reference, please can you comment on the performance impact of this?

Laurence

--B_3601881728_1046608566
Content-type: application/pkcs7-signature; name="smime.p7s"
Content-transfer-encoding: base64
Content-disposition: attachment;
	filename="smime.p7s"
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--B_3601881728_1046608566--



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?D19A161B-A26C-4CB8-8CF8-45A1195433C7>