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Message-ID: <1391969674.10160.134.camel@edumazet-glaptop2.roam.corp.google.com> Date: Sun, 09 Feb 2014 10:14:34 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: Borislav Petkov <bp@...en8.de> Cc: Daniel Exner <dex@...gonslave.de>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: Poor network performance x86_64.. also with 3.13 On Sun, 2014-02-09 at 16:31 +0100, Borislav Petkov wrote: > On Sun, Feb 09, 2014 at 04:05:11PM +0100, Daniel Exner wrote: > > > cat /etc/sysctl.d/net.conf > > > net.ipv4.tcp_window_scaling = 1 > > > net.core.rmem_max = 16777216 > > > net.ipv4.tcp_rmem = 4096 87380 16777 > > > net.ipv4.tcp_wmem = 4096 1638 > > > > After removing those values I finally had sane iperf values. > > No idea how those got there, perhaps they made sense when I first setup > > the box, which is some years ago.. > > The only question that is left to clarify now is why do those values > have effect on 3.12.x and not on 3.10... tcp_rmem[2] = 16777 Come on, the 640KB barrier was broken a long time ago ;) Feel free to investigate, I wont ;) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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