Messages in this thread | | | Date | Fri, 13 Aug 2004 00:23:48 +0200 | From | Pavel Machek <> | Subject | is_head_of_free_region slowing down swsusp |
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Hi!
is_head_of_free_region with count_and_copy_zone results results in pretty nasty O(number_of_free_regions^2) behaviour, and some users see cpu spending 40 seconds there :-(.
Actually count_and_copy_zone would probably be happy with "is_free_page()".
I asked Lukas (who is seeing this problem) to kill locking from is_head_of_free_region [we are running singlethreaded at this point, so it should be ok]. Do you have any other ideas? Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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