From: Nigel Cunningham <ncunningham@crca.org.au>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-pm@lists.linux-foundation.org, Jiri Slaby <jirislaby@gmail.com>
Subject: Re: [RFC 09/15] PM / Hibernate: user, implement user_ops writer
Date: Thu, 01 Apr 2010 08:54:44 +1100 [thread overview]
Message-ID: <4BB3C4A4.9080809@crca.org.au> (raw)
In-Reply-To: <4BB3B95A.5000901@crca.org.au>
Hi.
On 01/04/10 08:06, Nigel Cunningham wrote:
>>>>> Wouldn't it also increase the memory requirements?
>>>>
>>>> Not really, or just a little bit (the size of the buffer). I'm talking about
>>>> the image that's created atomically after we've frozen devices.
>>>
>>> The buffer would be the size of the compressed image.
>>
>> Not necessarily if the image is compressed in chunks. According to
>> measurements I did some time ago, 256 KiB chunks were sufficient.
>
> I must be missing something. You're talking about doing compression of
> the image during the atomic copy, right? If that's the case, where do
> the 256KiB chunks come in?
Ah, we're talking about different things. I wasn't thinking about the
size of buffers for compression, but instead where this compressed image
would be stored (leading into the 1/6th extra below).
Regards,
Nigel
next prev parent reply other threads:[~2010-03-31 21:54 UTC|newest]
Thread overview: 158+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-23 16:17 [RFC 01/15] FS: libfs, implement simple_write_to_buffer Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 02/15] PM / Hibernate: snapshot cleanup Jiri Slaby
2010-03-24 20:29 ` Pavel Machek
2010-03-24 20:29 ` Pavel Machek
2010-03-24 22:35 ` Rafael J. Wysocki
2010-03-24 22:35 ` Rafael J. Wysocki
2010-03-25 5:29 ` Pavel Machek
2010-03-25 5:29 ` Pavel Machek
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 03/15] PM / Hibernate: separate block_io Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-24 20:30 ` Pavel Machek
2010-03-24 20:30 ` Pavel Machek
2010-03-24 21:22 ` Jiri Slaby
2010-03-24 22:58 ` Nigel Cunningham
2010-03-25 2:35 ` Nigel Cunningham
2010-03-25 2:35 ` [linux-pm] " Nigel Cunningham
2010-03-25 20:12 ` Rafael J. Wysocki
2010-03-25 20:12 ` [linux-pm] " Rafael J. Wysocki
2010-03-25 20:13 ` Nigel Cunningham
2010-03-25 20:13 ` [linux-pm] " Nigel Cunningham
2010-03-25 20:33 ` Rafael J. Wysocki
2010-03-25 20:33 ` [linux-pm] " Rafael J. Wysocki
2010-03-25 20:36 ` Nigel Cunningham
2010-03-25 20:36 ` Nigel Cunningham
2010-03-29 13:30 ` Pavel Machek
2010-03-29 13:30 ` [linux-pm] " Pavel Machek
2010-03-25 14:29 ` Pavel Machek
2010-03-25 14:29 ` Pavel Machek
2010-03-24 22:58 ` Nigel Cunningham
2010-03-24 21:22 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 04/15] PM / Hibernate: move the first_sector out of swsusp_write Jiri Slaby
2010-03-24 20:31 ` Pavel Machek
2010-03-24 20:31 ` Pavel Machek
2010-03-25 21:26 ` Rafael J. Wysocki
2010-03-25 21:26 ` Rafael J. Wysocki
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 05/15] PM / Hibernate: group swap ops Jiri Slaby
2010-03-25 21:28 ` Rafael J. Wysocki
2010-03-25 21:28 ` Rafael J. Wysocki
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 06/15] PM / Hibernate: swap, remove swap_map_handle usages Jiri Slaby
2010-03-24 20:33 ` Pavel Machek
2010-03-24 21:29 ` Jiri Slaby
2010-03-24 21:29 ` Jiri Slaby
2010-03-25 21:35 ` Rafael J. Wysocki
2010-03-25 21:35 ` Rafael J. Wysocki
2010-03-24 20:33 ` Pavel Machek
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 07/15] PM / Hibernate: add sws_modules_ops Jiri Slaby
2010-03-24 20:36 ` Pavel Machek
2010-03-24 21:31 ` Jiri Slaby
2010-03-24 21:31 ` Jiri Slaby
2010-03-24 20:36 ` Pavel Machek
2010-03-25 22:02 ` Rafael J. Wysocki
2010-03-25 22:02 ` Rafael J. Wysocki
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 08/15] PM / Hibernate: add user module_ops Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-25 22:07 ` Rafael J. Wysocki
2010-03-26 9:43 ` Jiri Slaby
2010-03-26 9:43 ` Jiri Slaby
2010-03-25 22:07 ` Rafael J. Wysocki
2010-03-23 16:17 ` [RFC 09/15] PM / Hibernate: user, implement user_ops writer Jiri Slaby
2010-03-24 20:42 ` Pavel Machek
2010-03-24 21:40 ` Jiri Slaby
2010-03-24 21:40 ` Jiri Slaby
2010-03-25 21:36 ` Pavel Machek
2010-03-25 21:36 ` Pavel Machek
2010-03-25 22:14 ` Rafael J. Wysocki
2010-03-25 22:14 ` Rafael J. Wysocki
2010-03-26 9:34 ` Jiri Slaby
2010-03-26 22:04 ` Rafael J. Wysocki
2010-03-29 15:33 ` Jiri Slaby
2010-03-29 15:33 ` Jiri Slaby
2010-03-29 22:09 ` Rafael J. Wysocki
2010-03-30 1:14 ` Nigel Cunningham
2010-03-30 21:03 ` Rafael J. Wysocki
2010-03-31 2:31 ` Nigel Cunningham
2010-03-31 14:47 ` Pavel Machek
2010-03-31 21:01 ` Nigel Cunningham
2010-03-31 20:25 ` Rafael J. Wysocki
2010-03-31 21:06 ` Nigel Cunningham
2010-03-31 21:36 ` Rafael J. Wysocki
2010-04-04 23:08 ` Nigel Cunningham
2010-04-04 23:13 ` Rafael J. Wysocki
2010-03-31 21:54 ` Nigel Cunningham [this message]
2010-03-30 8:59 ` Jiri Slaby
2010-03-30 20:50 ` Rafael J. Wysocki
2010-03-31 14:41 ` Jiri Slaby
2010-03-31 20:29 ` Rafael J. Wysocki
2010-04-21 21:22 ` Jiri Slaby
2010-04-22 3:43 ` Rafael J. Wysocki
2010-03-26 22:04 ` Rafael J. Wysocki
2010-03-27 7:02 ` Pavel Machek
2010-03-27 7:02 ` Pavel Machek
2010-03-26 9:34 ` Jiri Slaby
2010-03-24 20:42 ` Pavel Machek
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 10/15] PM / Hibernate: user, implement user_ops reader Jiri Slaby
2010-03-25 5:30 ` what the patches do " Pavel Machek
2010-03-25 5:42 ` Nigel Cunningham
2010-03-25 6:12 ` Nigel Cunningham
2010-03-25 6:12 ` [linux-pm] " Nigel Cunningham
2010-03-25 20:14 ` Rafael J. Wysocki
2010-03-25 20:14 ` Rafael J. Wysocki
2010-03-25 20:21 ` Nigel Cunningham
2010-03-25 20:21 ` Nigel Cunningham
2010-03-25 20:29 ` Rafael J. Wysocki
2010-03-25 20:29 ` Rafael J. Wysocki
2010-03-25 20:35 ` Nigel Cunningham
2010-03-25 21:13 ` Rafael J. Wysocki
2010-03-25 21:13 ` Rafael J. Wysocki
2010-03-25 20:35 ` Nigel Cunningham
2010-03-25 21:26 ` Pavel Machek
2010-03-25 21:26 ` Pavel Machek
2010-03-25 21:49 ` [linux-pm] " Nigel Cunningham
2010-04-02 6:36 ` Pavel Machek
2010-04-02 6:36 ` [linux-pm] " Pavel Machek
2010-04-02 17:03 ` Rafael J. Wysocki
2010-04-02 17:03 ` [linux-pm] " Rafael J. Wysocki
2010-03-25 21:49 ` Nigel Cunningham
2010-03-25 5:42 ` Nigel Cunningham
2010-03-25 22:21 ` Rafael J. Wysocki
2010-03-25 22:21 ` Rafael J. Wysocki
2010-03-25 5:30 ` Pavel Machek
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 11/15] PM / Hibernate: add chunk i/o support Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-25 22:38 ` Rafael J. Wysocki
2010-03-25 22:38 ` Rafael J. Wysocki
2010-03-26 9:09 ` Jiri Slaby
2010-03-26 9:09 ` Jiri Slaby
2010-03-26 10:02 ` Nigel Cunningham
2010-03-26 10:02 ` Nigel Cunningham
2010-03-23 16:17 ` [RFC 12/15] PM / Hibernate: split snapshot_read_next Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-25 22:44 ` Rafael J. Wysocki
2010-03-25 22:44 ` Rafael J. Wysocki
2010-03-23 16:17 ` [RFC 13/15] PM / Hibernate: split snapshot_write_next Jiri Slaby
2010-03-25 22:46 ` Rafael J. Wysocki
2010-03-25 22:46 ` Rafael J. Wysocki
2010-03-23 16:17 ` Jiri Slaby
2010-03-23 16:17 ` [RFC 14/15] PM / Hibernate: dealign swsusp_info Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-25 22:46 ` Rafael J. Wysocki
2010-03-25 22:46 ` Rafael J. Wysocki
2010-03-23 16:17 ` [RFC 15/15] PM / Hibernate: move non-swap code to snapshot.c Jiri Slaby
2010-03-23 16:17 ` Jiri Slaby
2010-03-25 22:50 ` Rafael J. Wysocki
2010-03-25 22:50 ` Rafael J. Wysocki
2010-03-23 21:51 ` [RFC 01/15] FS: libfs, implement simple_write_to_buffer Rafael J. Wysocki
2010-03-23 21:51 ` Rafael J. Wysocki
2010-03-23 22:09 ` [linux-pm] " Nigel Cunningham
2010-03-23 22:09 ` Nigel Cunningham
2010-03-24 22:13 ` Rafael J. Wysocki
2010-03-24 22:13 ` Rafael J. Wysocki
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