From: Linhaifeng <haifeng.lin@huawei.com>
To: "Xie, Huawei" <huawei.xie@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
Date: Thu, 29 Jan 2015 20:39:16 +0800 [thread overview]
Message-ID: <54CA29F4.8080108@huawei.com> (raw)
In-Reply-To: <C37D651A908B024F974696C65296B57B0F376EE2@SHSMSX101.ccr.corp.intel.com>
On 2015/1/29 18:39, Xie, Huawei wrote:
>> - if (count == 0)
>> + /* If there is no buffers we should notify guest to fill.
>> + * This is need when guest use virtio_net driver(not pmd).
>> + */
>> + if (count == 0) {
>> + if (!(vq->avail->flags &
>> VRING_AVAIL_F_NO_INTERRUPT))
>> + eventfd_write((int)vq->kickfd, 1);
>> return 0;
>> + }
>
> Haifeng:
> Is it the root cause and is it protocol required?
> Could you give a detailed description for that scenario?
>
I use mz to send data from one VM1 to VM2.The two VM use virtio-net driver.
VM1 execute follow script:
for((i=0;i<999999999;i++));
do
mz eth0 -t udp -A 1.1.1.1 -B 1.1.1.2 -a 00:00:00:00:00:01 -b 00:00:00:00:00:02 -c 10000000 -p 512
sleep 4
done
VM2 execute follow command to watch:
watch -d ifconfig
After many hours VM2 stop to receive data.
Could you test it ?
--
Regards,
Haifeng
next prev parent reply other threads:[~2015-01-29 12:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-29 10:30 linhaifeng
2015-01-29 10:39 ` Xie, Huawei
2015-01-29 12:39 ` Linhaifeng [this message]
2015-01-29 13:00 ` Xie, Huawei
2015-01-29 13:50 ` Linhaifeng
2015-01-30 8:20 ` Xu, Qian Q
2015-01-30 10:33 ` Linhaifeng
2015-02-01 6:04 ` Linhaifeng
[not found] ` <82F45D86ADE5454A95A89742C8D1410E01CA1DA3@shsmsx102.ccr.corp.intel.com>
[not found] ` <54CF6BB3.7080002@huawei.com>
[not found] ` <C37D651A908B024F974696C65296B57B0F37C3F7@SHSMSX101.ccr.corp.intel.com>
[not found] ` <54D08AFA.2030404@huawei.com>
[not found] ` <82F45D86ADE5454A95A89742C8D1410E01CA3197@shsmsx102.ccr.corp.intel.com>
[not found] ` <54D0926D.9010304@huawei.com>
2015-02-04 1:38 ` Xu, Qian Q
2015-02-06 4:02 ` Linhaifeng
2015-02-06 5:54 ` Xu, Qian Q
2015-02-06 11:02 ` Linhaifeng
2015-02-07 4:26 ` Linhaifeng
2015-02-09 2:57 ` Xu, Qian Q
2015-02-09 4:11 ` Linhaifeng
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