Messages in this thread | | | Date | Sat, 02 Jan 1999 02:33:50 -0600 | From | Steve Bergman <> | Subject | Re: [patch] new-vm improvement [Re: 2.2.0 Bug summary] |
| |
Linus Torvalds wrote: > > On Fri, 1 Jan 1999, Steve Bergman wrote: > > > > I got the patch and I must say I'm impressed. I ran my "117 image" test > > and got these results: > > > > 2.1.131-ac11 172 sec (This was previously the best) > > 2.2.0-pre1 + Arcangeli's 1st patch 400 sec > > test1-pre + Arcangeli's 2nd patch 119 sec (!) > > Would you care to do some more testing? In particular, I'd like to hear > how basic 2.2.0pre3 works (that's essentially the same as test1-pre, with > only minor updates)? I'd like to calibrate the numbers against that, > rather than against kernels that I haven't actually ever run myself. > > The other thing I'd like to hear is how pre3 looks with this patch, which > should behave basically like Andrea's latest patch
Hi Linus,
Andrea sent another patch to correct a problem with i/o bound processes, which he also posted to linux-kernel. The performance in this test is unchanged.
Here are the results:
2.1.131-ac11 172 sec
2.2.0-pre1 + Arcangeli's 1st patch 400 sec test1-pre + Arcangeli's 2nd patch 119 sec test1-pre + Arcangeli's 3rd patch 119 sec test1-pre + Arcangeli's 3rd patch 117 sec (changed to priority = 9 in mm/vmscan.c)
2.2.0-pre3 175 sec 2.2.0-pre3 + Linus's patch 129 sec
RH5.2 Stock (2.0.36-0.7) 280 sec
I noticed that in watching the 'vmstat 1' during the test that '2.2.0+Linus patch' was not *quite* as smooth as the Archangeli patches, in that there were periods of 2 or 3 seconds in which the swap out rate would fall to ~800k/sec and then jump back up to 1.8-2.5MB/sec. I have only run your patch once though. I'll check it further tomorrow to confirm that that is really the case. Note how much better 2.2 is doing compared to 2.0.36-0.7 in this situation.
I should be available for a good part of this weekend for further testing; Just let me know.
As a reference:
AMD K6-2 300 128MB ram 2GB seagate scsi2 dedicated to swap Data drive is 6.5GB UDMA
Steve Bergman steve@netplus.net
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |