linux-kernel - Re: sys_epoll_wait high CPU load in 2.6.37

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: <1296065900.2899.108.camel@edumazet-laptop>
Date:	Wed, 26 Jan 2011 19:18:20 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Davide Libenzi <davidel@...ilserver.org>
Cc:	Shawn Bohrer <shawn.bohrer@...il.com>,
	Simon Kirby <sim@...tway.ca>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: sys_epoll_wait high CPU load in 2.6.37

Le mercredi 26 janvier 2011 à 10:06 -0800, Davide Libenzi a écrit :

> Eric, if you look at fs/select.c (~line 925), poll does exactly the same 
> thing as epoll do.
> It too, ignores the eventual return value of poll_select_set_timeout(), so 
> maybe a little bit more optimized ktime_get_ts+timespec_add_ms could make 
> sense.
> 

OK, I'll post a V3 ;)

Thanks


--
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/