Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [PATCH] vm - swap_prefetch v12 | Date | Fri, 30 Sep 2005 09:12:58 +1000 |
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On Fri, 30 Sep 2005 07:54 am, Andrew Morton wrote: > Con Kolivas <kernel@kolivas.org> wrote: > > Once pages have been added to the swapped list, a timer is started, > > testing for conditions suitable to prefetch swap pages every 5 seconds. > > Suitable conditions are defined as lack of swapping out or in any pages, > > and no watermark tests failing. Significant amounts of dirtied ram also > > prevent prefetching. It then checks that we have spare ram looking for at > > least 3* pages_high free per zone and if it succeeds that will prefetch > > pages from swap. > > Did you consider poking around in gendisk.disk_stats to determine whether > the swap disk(s) are idleish?
I didn't know where to look for that info. Thanks! I'm open to *any* suggestions and I'll look into it as I can't take this code much further without outside help.
Cheers, Con - 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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