Messages in this thread | | | Date | Thu, 19 Dec 2002 08:37:30 +1300 | From | Nigel Cunningham <> | Subject | RE: [ACPI] Re: [PATCH] S4bios for 2.5.52. |
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> Kai, if you see that S4OS is slower, it is probably a bug > that have to be > fixed in swsusp.
There does seem to be a problem with the rw_swap_page_sync routine. Perhaps not on Pavel's machine (:>), but I've experienced painfully slow suspends too. Performance was helped immensely by applying a concept that I'll credit Lyle Seaman for - unrolling rw_swap_page_sync and submitting all the IO for pages then looping again and waiting on each sync. I found with writing 7000 or so pages (a suspend from init S) that something gets triggered to force the sync about every 3900 pages anyway.
Regards,
Nigel
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