lists.openwall.net | 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 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 30 Mar 2016 16:40:23 -0400 From: Sowmini Varadhan <sowmini.varadhan@...cle.com> To: Eric Dumazet <eric.dumazet@...il.com> Cc: Jesse Brandeburg <jesse.brandeburg@...el.com>, Alexander Duyck <alexander.duyck@...il.com>, Alexander Duyck <aduyck@...antis.com>, Netdev <netdev@...r.kernel.org>, intel-wired-lan <intel-wired-lan@...ts.osuosl.org>, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: Re: [net PATCH] i40e/i40evf: Limit TSO to 7 descriptors for payload instead of 8 per packet On (03/30/16 13:15), Eric Dumazet wrote: > You might try netperf -t TCP_SENDFILE -- -m 150 > > to let netperf use sendfile() on small frags. that still did not reproduce it but let me try beating on that approach with more permutations. BTW, another data-point that may help debug this: even with i40e, if you use the "-o" option to the rds-stress invocation, there are no problems: the "-o" option enforces uni-directional data transfer, so one side is pure-Tx, other side is pure-Rx. It is only when both sides simultaneously do both Tx and Rx on the tcp socket that you see the issue. I dont know if that provides any clues. --Sowmini
Powered by blists - more mailing lists