linux-kernel - Re: [BUG] Strange 1-second pauses during Resume-from-RAM

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20071204000655.GA17212@lazybastard.org>
Date:	Tue, 4 Dec 2007 01:06:55 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Jörn Engel <joern@...fs.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Mark Lord <lkml@....ca>,
	Pavel Machek <pavel@....cz>, Mark Lord <liml@....ca>,
	Thomas Gleixner <tglx@...utronix.de>, len.brown@...el.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	rjw@...k.pl
Subject: Re: [BUG] Strange 1-second pauses during Resume-from-RAM

On Mon, 3 December 2007 01:57:02 +0100, Jörn Engel wrote:
> 
> After an eternity of compile time, this config does generate some useful
> output.  qemu is not to blame.

Or is it?  The output definitely looks suspicious.  Large amounts of
code get processed within a microsecond, while update_wall_time()
appears to cause huge delays every time it is called:
http://logfs.org/~joern/trace

Does this output make sense or does it rather indicate some sloppiness
wrt. time in the qemu virtual machine?

Jörn

-- 
tglx1 thinks that joern should get a (TM) for "Thinking Is Hard"
-- Thomas Gleixner
--
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/