lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 14 Aug 2014 12:59:18 -0700
From:	Rick Jones <>
To:	Eric Dumazet <>,
	Alexander Duyck <>
CC:	David Miller <>, netdev <>
Subject: Re: Performance regression on kernels 3.10 and newer

On 08/14/2014 11:46 AM, Eric Dumazet wrote:

> I believe you answered your own question : prequeue mode does not work
> very well when one host has hundred of active TCP flows to one other.
> In real life, applications do not use prequeue, because nobody wants one
> thread per flow.
> Each socket has its own dst now route cache was removed, but if your
> netperf migrates cpu (and NUMA node), we do not detect the dst should be
> re-created onto a different NUMA node.

Presumably, the -T $i,$j option in Alex's netperf command lines will 
have bound netperf and netserver to a specific CPU where they will have 

rick jones
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists