Messages in this thread | | | Date | Tue, 30 Dec 2003 02:25:52 +0100 | From | Roger Luethi <> | Subject | Re: 2.6.0 performance problems |
| |
On Mon, 29 Dec 2003 17:07:46 -0500, Thomas Molina wrote: > Execution time for the test was: > real 13m33.482s > user 0m33.540s > sys 0m16.210s > > > Under 2.6 top shows: > user nice system irq softirq iowait idle > 0.9 0 5.3 0.9 0.3 92.6 0 > > Execution time for the test was: > real 22m42.397s > user 0m37.753s > sys 0m54.043s > > I've done no performance tweaking in either case. Both tests were done > immediately after boot up with only the top program running in each case. > I'm not sure what other data would be relevant here. Any thoughts from > the group would be appreciated.
I bet this is just yet another instance of a problem we've been discussing on lkml and linux-mm for several months now (although Linus asking for DMA presumably means it's not as well known as I thought it was).
Basically, when you need to resort to paging for getting work done on 2.6 you're screwed. Your bk export takes a lot more memory than you have RAM in your machine, right?
Check the archives for this thread: 2.6.0-test9 - poor swap performance on low end machines
Roger - 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/
| |