linux-kernel - Re: [LKP] [lkp] [sctp] a6c2f79287: netperf.Throughput

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Message-ID: <CADvbK_dqSTArYJQGD9--vi4vyV-kfAg50=cK4oc7AhGzSwbLXQ@mail.gmail.com>
Date:	Wed, 17 Aug 2016 16:58:59 +0800
From:	Xin Long <lucien.xin@...il.com>
To:	Aaron Lu <aaron.lu@...el.com>
Cc:	kernel test robot <xiaolong.ye@...el.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org,
	"David S. Miller" <davem@...emloft.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [LKP] [lkp] [sctp] a6c2f79287: netperf.Throughput_Mbps -37.2% regression

>
> It doesn't change on my desktop Sandybridge.
>
> $ cat 4.7.0-rc6-01199-g116558d316e8/0/netperf.json
> {
>   "netperf.Throughput_Mbps": [
>    748.2056249999998
>   ]
> }
>
> Where commit 116558d316e8 is based on top of the last test commit
> 98dd2532b14e with the sent_count removed.
Nice job
I guess it may be because of your system memory limitation

sctp_chunk size is bigger than before, netpref produced a lot
of sctp_chunk in send queue.

can you check the memory of your systems when the test is
running,  to see if memory is the bottle neck of this test ?

>
> Thanks,
> Aaron