lkml.org 
[lkml]   [2018]   [Dec]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH net-next v2 0/4] net: mitigate retpoline overhead
From
From: Paolo Abeni <pabeni@redhat.com>
Date: Wed, 5 Dec 2018 19:13:38 +0100

...
> This may lead to some uglification around the indirect calls. In netconf 2018
> Eric Dumazet described a technique to hide the most relevant part of the needed
> boilerplate with some macro help.
>
> This series is a [re-]implementation of such idea, exposing the introduced
> helpers in a new header file. They are later leveraged to avoid the indirect
> call overhead in the GRO path, when possible.
>
> Overall this gives > 10% performance improvement for UDP GRO benchmark and
> smaller but measurable for TCP syn flood.
>
> The added infra can be used in follow-up patches to cope with retpoline overhead
> in other points of the networking stack (e.g. at the qdisc layer) and possibly
> even in other subsystems.
...

I like this a lot and unless I hear some objections I'm going to apply this
series tomorrow.

Thanks for working on this Paolo.

\
 
 \ /
  Last update: 2018-12-06 05:51    [W:0.136 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site