Rik van Riel wrote: > Christoph Lameter wrote: > > This is a patch using some of Aubrey's work plugging it in what is IMHO > > the right way. Feel free to improve on it. I have gotten repeatedly > > requests to be able to limit the pagecache. > > IMHO it's a bad hack. > > It would be better to identify the problem this "feature" is > trying to fix, and then fix the root cause.
Ok, here is the problem: kswapd. Limiting the page-cache memory inhibits invoking kswapd needlessly, aiding performance and easing OOM pressures. I tried the patch; it works. But it needs a bit of debugging. Setting pagecache_ratio = 1 either deadlocks or reduces thru-put to < 1mb/s. Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
