linux-kernel - Re: [PATCH] PM / Hibernate: Improve performance of LZO/plain hibernation, checksum image

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Date:	Thu, 29 Dec 2011 10:37:24 +0800
From:	Barry Song <21cnbao@...il.com>
To:	Bojan Smojver <bojan@...ursive.com>
Cc:	rjw@...k.pl, linux-pm@...ts.linux-foundation.org,
	LKML <linux-kernel@...r.kernel.org>,
	DL-SHA-WorkGroupLinux <workgroup.linux@....com>
Subject: Re: [PATCH] PM / Hibernate: Improve performance of LZO/plain
 hibernation, checksum image

2011/12/29 Bojan Smojver <bojan@...ursive.com>:
> On Tue, 2011-12-27 at 20:27 +0800, Barry Song wrote:
>> this patch is definitely great!
>
> Thanks, I'm glad you liked it.
>
>> any plan to write the same patch for decompress and restore? i think
>> that is probably more important than compression and hibernation to
>> improve bootup speed.
>
> I'm not sure I understand what you mean here. Can you elaborate?

i mean we can load image and decompress them in different threads when
we reboot from hibernation.
after i read codes more carefully, that has actually been done by
lzo_decompress_threadfn().

here the problem is we didn't seem to get any faster after applying
your compression patch when doing hibernation on SD/NAND.
we are trying to figure out the reason.

>
> --
> Bojan
>

-barry
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