From: "Xie, Huawei" <huawei.xie@intel.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH 2/3] vhost: optimize dequeue for small packets
Date: Fri, 3 Jun 2016 07:43:28 +0000 [thread overview]
Message-ID: <C37D651A908B024F974696C65296B57B4C7C39D8@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1462236378-7604-3-git-send-email-yuanhan.liu@linux.intel.com>
On 5/3/2016 8:42 AM, Yuanhan Liu wrote:
> Both current kernel virtio driver and DPDK virtio driver use at least
> 2 desc buffer for Tx: the first for storing the header, and the others
> for storing the data.
>
> Therefore, we could fetch the first data desc buf before the main loop,
> and do the copy first before the check of "are we done yet?". This
> could save one check for small packets, that just have one data desc
> buffer and need one mbuf to store it.
>
> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
next prev parent reply other threads:[~2016-06-03 7:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 0:46 [dpdk-dev] [PATCH 0/3] [RFC] vhost: micro vhost optimization Yuanhan Liu
2016-05-03 0:46 ` [dpdk-dev] [PATCH 1/3] vhost: pre update used ring for Tx and Rx Yuanhan Liu
2016-06-01 6:40 ` Xie, Huawei
2016-06-01 6:55 ` Yuanhan Liu
2016-06-03 8:18 ` Xie, Huawei
2016-06-01 13:05 ` Michael S. Tsirkin
2016-05-03 0:46 ` [dpdk-dev] [PATCH 2/3] vhost: optimize dequeue for small packets Yuanhan Liu
2016-06-01 6:24 ` Xie, Huawei
2016-06-01 6:44 ` Yuanhan Liu
2016-06-03 7:42 ` Xie, Huawei
2016-06-03 7:43 ` Xie, Huawei [this message]
2016-05-03 0:46 ` [dpdk-dev] [PATCH 3/3] vhost: arrange virtio_net fields for better cache sharing Yuanhan Liu
2016-06-01 6:42 ` Xie, Huawei
2016-05-10 21:49 ` [dpdk-dev] [PATCH 0/3] [RFC] vhost: micro vhost optimization Rich Lane
2016-05-10 22:08 ` Yuanhan Liu
2016-06-14 12:42 ` Yuanhan Liu
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