From: Yan Fridland <yan@asocsnetworks.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: [dpdk-dev] FW: Performance issue when running DPDK on Fedora
Date: Wed, 30 Sep 2015 06:40:24 +0000 [thread overview]
Message-ID: <AM4PR06MB15372C96B7C99DDDE35BE53EA34D0@AM4PR06MB1537.eurprd06.prod.outlook.com> (raw)
Hello DPDK developers,
I am running a simple dpdk application on 2 VMs running on 2 different hosts. Each VM has a single port bound to a DPDK's ixgbevf module and the ports are connected to allow a traffic transaction. Both VMs are running on KVM hypervisor on Fedora. The test is quite simple, one of the VMs generates a 1500 byte packets and sends them to another VM that simply returns them back with no processing at all. For each packet I am measuring a roundtrip time for a latency analysis.
According to the results I see exactly the same pattern in all the tests: 99% of the packets have a roundtrip time around 55usec when there are always several packets that have a round trip over a 1msec that is totally unacceptable in my application.
Can you please advise what should be done on a DPDK / KVM / Linux basis in order to improve this result.
Any suggestions will be highly appreciated.
Thank you,
Yan
reply other threads:[~2015-09-30 6:40 UTC|newest]
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