From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: Joao.Pinto@synopsys.com, peppe.cavallaro@st.com, alexandre.torgue@st.com
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: stmmac: Performance regression after commit aff3d9eff843 "net: stmmac: enable multiple buffers"
Date: Thu, 23 Mar 2017 11:08:28 +0100 [thread overview]
Message-ID: <20170323100828.GC16625@Red> (raw)
Hello
Using next-20170323 produce a huge performance regression on my sunxi boards.
On dwmac-sun8i, iperf goes from 94mbs/s to 37 when sending.
On cubieboard2(dwmac-sunxi), iperf made the kernel flood with "ndesc_get_rx_status: Oversized frame spanned multiple buffers"
and network is lost after.
Reverting aff3d9eff84399e433c4aca65a9bb236581bc082 fix the issue.
I still try to found which part of this patch mades the performance lower.
Regards
Corentin Labbe
next reply other threads:[~2017-03-23 10:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 10:08 Corentin Labbe [this message]
2017-03-23 10:12 ` stmmac: Performance regression after commit aff3d9eff843 "net: stmmac: enable multiple buffers" Joao Pinto
2017-03-23 10:20 ` Corentin Labbe
2017-03-23 10:40 ` Joao Pinto
2017-03-23 10:48 ` Giuseppe CAVALLARO
2017-03-23 10:51 ` Giuseppe CAVALLARO
2017-03-23 10:56 ` Joao Pinto
2017-03-23 12:55 ` Joao Pinto
2017-03-23 10:54 ` Joao Pinto
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