Messages in this thread | | | Date | Sun, 28 Mar 2004 21:38:24 -0500 | From | "John Stoffel" <> | Subject | 2.6.5-rc2-mm1 - swapoff dies with OOM, why? |
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Hi all,
I've run into a strange situation here. I was having *terrible* performance while doing a complile of the 2.6.5-rc2-mm2 kernel on my system (Debian completely bleeding edge, plus udev and hotplug) along with dealing with a USB problem where if I removed my Cuzer USB device, it would never get de-allocated properly and the system load would start to hang.
I've got 768mb of RAM, and 1gb of SWAP on the system, and I was using about 110mb of swap, and around 360mb of cache, with around 20-30mb of cache. So using vmstat 1, I could see that the system was swapping in just all the time, and the compile was just dog slow. So I figured I could get rid of some useless cache if I could just turn off swap.
No go. Every time I tried, it would drop the swap down a bit (say 5-20mb), but then go OOM on me and die. I thought this was completely bogus. If I've got the physical RAM available, and more cache and/or buffer than is currently swapped to disk, why can't I kill swap?
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