Hi Yuwei,
Can you test this, please:
https://gerrit.fd.io/r/#/c/15100/
thanks,
neale
De : "Zhang, Yuwei1" <yuwei1.zh...@intel.com>
Date : vendredi 28 septembre 2018 à 03:08
À : "Neale Ranns (nranns)" <nra...@cisco.com>, "vpp-dev@lists.fd.io"
<vpp-dev@lists.fd.io>
Objet : RE: [vpp-dev] Master branch l2bd test perf dop
Hi Neale,
I assume the replications should related to the interfaces in the
bridge, right? I just have 2 interfaces in the bridge which means one of the
interface receive traffic and another send out. In the 64K size packet test
case, the performance have almost 35% drop. I didn’t do other case yet.
Regards,
Yuwei
From: Neale Ranns (nranns) [mailto:nra...@cisco.com]
Sent: Thursday, September 27, 2018 8:31 PM
To: Zhang, Yuwei1 <yuwei1.zh...@intel.com>; vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] Master branch l2bd test perf dop
Hi Yuwei,
There was a change to the l2flood node recently:
https://gerrit.fd.io/r/#/c/13578/
where we use the buffer clone mechanism rather than free-recycle. I would
expect the CPU cycles per invocation of the l2-flood node to increase, but the
number of invocations of l2flood to decrease (w.r.t. the interface-tx node).
How many replications does your test perform and is there a trend for perf
change versus number of replications?
Thanks,
Neale
De : <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> au nom de Zhang Yuwei
<yuwei1.zh...@intel.com<mailto:yuwei1.zh...@intel.com>>
Date : jeudi 27 septembre 2018 à 05:02
À : "vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>"
<vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>>
Objet : [vpp-dev] Master branch l2bd test perf dop
Hi All,
In our recent test, I found a performance drop in master branch. I
execute the l2bd test case in a 2.5GHZ CPU and found almost 35% drop compared
to 18.07 release. My test is set two NIC ports to a same bridge domain and send
traffic to test the l2 forward performance. I found in the master branch,
l2flood function consume much more CPU cycles than 18.07 which means any test
use the l2flood function will also have a performance drop. Can anybody kindly
help to check this issue? Thanks a lot.
Regards,
Yuwei
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