From: Wei Liu <wei.liu2@citrix.com>
To: Zoltan Kiss <zoltan.kiss@citrix.com>
Cc: <ian.campbell@citrix.com>, <wei.liu2@citrix.com>,
<xen-devel@lists.xenproject.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <jonathan.davies@citrix.com>
Subject: Re: [PATCH net-next v2 9/9] xen-netback: Aggregate TX unmap operations
Date: Fri, 13 Dec 2013 15:44:35 +0000 [thread overview]
Message-ID: <20131213154435.GP21900@zion.uk.xensource.com> (raw)
In-Reply-To: <1386892097-15502-10-git-send-email-zoltan.kiss@citrix.com>
On Thu, Dec 12, 2013 at 11:48:17PM +0000, Zoltan Kiss wrote:
> Unmapping causes TLB flushing, therefore we should make it in the largest
> possible batches. However we shouldn't starve the guest for too long. So if
> the guest has space for at least two big packets and we don't have at least a
> quarter ring to unmap, delay it for at most 1 milisec.
>
Is this solution temporary or permanent? If it is permanent would it
make sense to make these parameter tunable?
Wei.
next prev parent reply other threads:[~2013-12-13 15:44 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-12 23:48 [PATCH net-next v2 0/9] xen-netback: TX grant mapping with SKBTX_DEV_ZEROCOPY instead of copy Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 1/9] xen-netback: Introduce TX grant map definitions Zoltan Kiss
2013-12-13 15:31 ` Wei Liu
2013-12-13 18:22 ` Zoltan Kiss
2013-12-13 19:14 ` Wei Liu
2013-12-16 15:21 ` Zoltan Kiss
2013-12-16 17:50 ` Wei Liu
2014-01-07 14:50 ` Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 2/9] xen-netback: Change TX path from grant copy to mapping Zoltan Kiss
2013-12-13 15:36 ` Wei Liu
2013-12-16 15:38 ` Zoltan Kiss
2013-12-16 18:21 ` Wei Liu
2013-12-16 18:57 ` Zoltan Kiss
2013-12-16 19:06 ` Wei Liu
2013-12-17 21:49 ` [Xen-devel] " Konrad Rzeszutek Wilk
2013-12-30 17:58 ` Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 3/9] xen-netback: Remove old TX grant copy definitons and fix indentations Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 4/9] xen-netback: Change RX path for mapped SKB fragments Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 5/9] xen-netback: Add stat counters for zerocopy Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 6/9] xen-netback: Handle guests with too many frags Zoltan Kiss
2013-12-13 15:43 ` Wei Liu
2013-12-16 16:10 ` Zoltan Kiss
2013-12-16 18:09 ` Wei Liu
2014-01-07 15:23 ` Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 7/9] xen-netback: Add stat counters for frag_list skbs Zoltan Kiss
2013-12-12 23:48 ` [PATCH net-next v2 8/9] xen-netback: Timeout packets in RX path Zoltan Kiss
2013-12-13 15:44 ` Wei Liu
2013-12-16 17:16 ` Zoltan Kiss
2013-12-16 19:03 ` Wei Liu
2013-12-12 23:48 ` [PATCH net-next v2 9/9] xen-netback: Aggregate TX unmap operations Zoltan Kiss
2013-12-13 15:44 ` Wei Liu [this message]
2013-12-16 16:30 ` Zoltan Kiss
2013-12-16 6:32 ` [Xen-devel] [PATCH net-next v2 0/9] xen-netback: TX grant mapping with SKBTX_DEV_ZEROCOPY instead of copy annie li
2013-12-16 16:13 ` Zoltan Kiss
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