From: Pavel Machek <pavel@suse.cz>
To: Andi Kleen <ak@suse.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH][RFC] swsusp: speed up image restoring on x86-64
Date: Sat, 22 Jan 2005 12:30:53 +0100 [thread overview]
Message-ID: <20050122113053.GA9306@elf.ucw.cz> (raw)
In-Reply-To: <20050122112608.GB1303@wotan.suse.de>
Hi!
> > + * TLB flush is purely and debugging attempt to make it fail fast if we
> > + * do something wrong. TLB is properly flushed in swsusp_restore.
>
> Did you measure it doesn't noticeable slow down suspend? CR3 reload is quite
> expensive, and doing it for each page is quite often.
It slows it down horribly on vmware (like adding 2 minutes). On normal
hardware, copying pages does not take long enough for me to notice.
> Also if you want to really flush everything you should do a global
> flush.
That cr3 reload can probably be just removed, because swsusp is now
stable...
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
next prev parent reply other threads:[~2005-01-22 11:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-20 19:32 Rafael J. Wysocki
2005-01-20 20:59 ` Pavel Machek
2005-01-20 21:46 ` Rafael J. Wysocki
2005-01-20 22:06 ` Pavel Machek
2005-01-20 22:58 ` Rafael J. Wysocki
2005-01-20 23:06 ` Pavel Machek
2005-01-21 0:14 ` Rafael J. Wysocki
2005-01-21 10:06 ` Pavel Machek
2005-01-21 12:43 ` Rafael J. Wysocki
2005-01-21 2:23 ` hugang
2005-01-21 10:04 ` Pavel Machek
2005-01-21 10:19 ` Andi Kleen
2005-01-21 10:30 ` Pavel Machek
2005-01-21 13:42 ` Rafael J. Wysocki
2005-01-21 14:31 ` hugang
2005-01-21 17:48 ` Pavel Machek
2005-01-21 12:32 ` Rafael J. Wysocki
2005-01-21 19:09 ` Rafael J. Wysocki
2005-01-22 2:03 ` Andi Kleen
2005-01-20 21:04 ` Rafael J. Wysocki
2005-01-22 2:50 ` Andi Kleen
2005-01-22 9:54 ` Pavel Machek
2005-01-22 11:26 ` Andi Kleen
2005-01-22 11:30 ` Pavel Machek [this message]
2005-01-22 11:44 ` Andi Kleen
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