linux-kernel - Re: [PATCH net-next 0/4] net: route: improve route hinting

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

Message-ID: <2893a096-c07d-4ba3-85a8-db18616810f3@kernel.org>
Date: Tue, 2 Apr 2024 09:02:32 -0600
From: David Ahern <dsahern@...nel.org>
To: Leone Fernando <leone4fernando@...il.com>, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, willemb@...gle.com
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/4] net: route: improve route hinting

On 4/2/24 4:08 AM, Leone Fernando wrote:
> Hi David,
> 
> I plan to continue working on this patch, and it
> would be helpful if you could share some more thoughts.
> As I said before, I think this patch is significant, and my measurements
> showed a consistent improvement in most cases.
> 

It seems to me patch 1 and a version of it for IPv6 should go in
independent of this set.

For the rest of it, Jakub's response was a good summary: it is hard to
know if there is a benefit to real workloads. Cache's consume resources
(memory and cpu) and will be wrong some percentage of the time
increasing overhead.

Also, it is targeted at a very narrow use case -- IPv4 only, no custom
FIB rules and no multipath.