netdev - Re: [PATCH v2 net-next 0/4] vhost_net: Avoid vq kicks during busyloop

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 04 Jul 2018 21:31:47 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     makita.toshiaki@....ntt.co.jp
Cc:     mst@...hat.com, jasowang@...hat.com, netdev@...r.kernel.org,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        xiangxia.m.yue@...il.com
Subject: Re: [PATCH v2 net-next 0/4] vhost_net: Avoid vq kicks during
 busyloop

From: Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
Date: Tue,  3 Jul 2018 16:31:30 +0900

> Under heavy load vhost tx busypoll tend not to suppress vq kicks, which
> causes poor guest tx performance. The detailed scenario is described in
> commitlog of patch 2.
> Rx seems not to have that serious problem, but for consistency I made a
> similar change on rx to avoid rx wakeups (patch 3).
> Additionary patch 4 is to avoid rx kicks under heavy load during
> busypoll.
> 
> Tx performance is greatly improved by this change. I don't see notable
> performance change on rx with this series though.
 ...

Series applied, thank you.