linux-kernel - Re: Poor UDP performance using 2.6.21-rc5-rt5

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: <20070402072111.GA21356@elte.hu>
Date:	Mon, 2 Apr 2007 09:21:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Dave Sperry <dave_sperry@...e.org>
Cc:	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Poor UDP performance using 2.6.21-rc5-rt5


* Dave Sperry <dave_sperry@...e.org> wrote:

> I have a dual core Opteron machine that exhibits poor UDP performance 
> (RT consumes more than 2X cpu) with the 2.6.21-rc5-rt5 as compared to 
> 2.6.21-rc5. Top shows the IRQ handler consuming a lot of CPU.

update: even with acpi_pm clocksource on vanilla i can reproduce similar 
overhead using netperf.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/