Messages in this thread | | | Date | Sat, 1 Dec 2001 09:15:39 +0100 (CET) | From | Mike Galbraith <> | Subject | Re: Is it normal for freezing while... |
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On Fri, 30 Nov 2001, Andrew Morton wrote:
> war wrote: > > > > Wow, responsiveness is wonderful with these patches. > > yup. Thanks for testing... > > > Will they make it into 2.4.17, (ie: I've seen the -pre2 changelog, did > > you incorporate them into -pre2)? > > Even throughout the entire dd, it remained responsive > > (mouse/cursor/network/etc). > > Well, this is a stable kernel, and the patch does adversely > affect overall throughput. > > There are two changes to the elevator in that patch. One > is a modest speedup for all workloads which, frankly, I'm > inclined to drop. The other is the part which gives the > improved responsiveness. > > Being a cautious chap, I think I'll submit that patch, with > the default setting to "off", so there is no change to default > kernel behaviour. Then people can run `elvtune -b' to enable it.
I confirmed that this works just fine for my test load.
2.5.1-pre1+vm-fixes+elevator+mini-ll+elvtune -b ~random real 7m48.999s user 6m41.020s sys 0m30.130s
user : 0:06:47.59 73.0% page in : 669883 nice : 0:00:00.00 0.0% page out: 636094 system: 0:00:48.41 8.7% swap in : 143339 idle : 0:01:42.63 18.4% swap out: 154398
-----------------previous-results------------------ 2.5.1-pre1 real 7m54.873s user 6m41.070s sys 0m30.170s
user : 0:06:47.35 72.6% page in : 661891 nice : 0:00:00.00 0.0% page out: 708836 system: 0:00:47.42 8.5% swap in : 140234 idle : 0:01:46.26 18.9% swap out: 172775
2.5.1-pre1+vm-fixes real 7m48.438s user 6m41.070s sys 0m29.570s
user : 0:06:47.89 74.9% page in : 666952 nice : 0:00:00.00 0.0% page out: 621296 system: 0:00:47.70 8.8% swap in : 142391 idle : 0:01:28.94 16.3% swap out: 150721
2.5.1-pre1+vm-fixes+elevator real 8m13.386s user 6m38.330s sys 0m31.680s
user : 0:06:45.24 70.3% page in : 596724 nice : 0:00:00.00 0.0% page out: 574456 system: 0:00:47.79 8.3% swap in : 123507 idle : 0:02:03.64 21.4% swap out: 138675
2.5.1-pre1+vm-fixes+elevator+mini-ll real 8m12.437s user 6m38.860s sys 0m31.680s
user : 0:06:45.90 71.0% page in : 604385 nice : 0:00:00.00 0.0% page out: 572588 system: 0:00:47.50 8.3% swap in : 126731 idle : 0:01:58.05 20.7% swap out: 138055
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