67 messages in org.freebsd.freebsd-hackersRe: [RFT][patch] Scheduling for HTT a...| From | Sent On | Attachments |
|---|---|---|
| Alexander Motin | Feb 5, 2012 11:04 pm | |
| David Xu | Feb 5, 2012 11:59 pm | |
| Gary Jennejohn | Feb 6, 2012 2:08 am | |
| Alexander Best | Feb 6, 2012 8:01 am | |
| Alexander Motin | Feb 6, 2012 8:28 am | |
| Tijl Coosemans | Feb 6, 2012 9:37 am | |
| Alexander Motin | Feb 6, 2012 9:54 am | |
| Florian Smeets | Feb 6, 2012 11:07 am | |
| Alexander Best | Feb 6, 2012 11:10 am | |
| Alexander Motin | Feb 6, 2012 11:18 am | |
| Julian Elischer | Feb 6, 2012 10:10 pm | |
| Ivan Voras | Feb 8, 2012 3:06 am | |
| Andriy Gapon | Feb 11, 2012 5:34 am | |
| Alexander Motin | Feb 11, 2012 6:21 am | |
| Konstantin Belousov | Feb 11, 2012 7:35 am | |
| Andriy Gapon | Feb 11, 2012 9:04 am | |
| Alexander Motin | Feb 13, 2012 11:56 am | |
| Jeff Roberson | Feb 13, 2012 12:23 pm | |
| Alexander Motin | Feb 13, 2012 12:54 pm | |
| Jeff Roberson | Feb 13, 2012 1:39 pm | |
| Alexander Motin | Feb 13, 2012 2:38 pm | |
| Alexander Motin | Feb 15, 2012 11:46 am | |
| Jeff Roberson | Feb 15, 2012 11:54 am | |
| Alexander Motin | Feb 15, 2012 12:06 pm | |
| Alexander Motin | Feb 15, 2012 8:41 pm | |
| Alexander Motin | Feb 16, 2012 12:48 am | |
| Alexander Motin | Feb 16, 2012 2:58 am | |
| Florian Smeets | Feb 16, 2012 1:28 pm | |
| Alexander Motin | Feb 17, 2012 8:29 am | |
| Arnaud Lacombe | Feb 17, 2012 8:52 am | |
| Alexander Motin | Feb 17, 2012 9:02 am | |
| George Mitchell | Feb 26, 2012 4:32 pm | |
| George Mitchell | Feb 26, 2012 4:37 pm | |
| Olivier Smedts | Feb 27, 2012 2:34 am | |
| George Mitchell | Feb 27, 2012 3:23 am | |
| Olivier Smedts | Feb 27, 2012 3:27 am | |
| Andriy Gapon | Feb 27, 2012 4:41 am | |
| George Mitchell | Feb 27, 2012 3:54 pm | |
| Adrian Chadd | Mar 2, 2012 3:05 pm | |
| George Mitchell | Mar 2, 2012 4:14 pm | |
| Adrian Chadd | Mar 2, 2012 7:24 pm | |
| Alexander Motin | Mar 2, 2012 11:40 pm | |
| Ivan Klymenko | Mar 3, 2012 12:18 am | |
| Adrian Chadd | Mar 3, 2012 12:59 am | |
| Alexander Motin | Mar 3, 2012 1:12 am | |
| Alexander Motin | Mar 3, 2012 4:53 am | |
| Ivan Klymenko | Mar 3, 2012 7:25 am | |
| Alexander Motin | Mar 3, 2012 8:30 am | |
| Mario Lobo | Mar 3, 2012 8:56 am | |
| Alexander Motin | Mar 3, 2012 9:56 am | |
| Ivan Klymenko | Mar 3, 2012 11:15 am | |
| Arnaud Lacombe | Apr 5, 2012 11:11 am | |
| Alexander Motin | Apr 5, 2012 11:45 am | |
| Attilio Rao | Apr 6, 2012 7:12 am | |
| Alexander Motin | Apr 6, 2012 7:26 am | |
| Attilio Rao | Apr 6, 2012 7:30 am | |
| Alexander Motin | Apr 6, 2012 7:40 am | |
| Alexander Motin | Apr 9, 2012 12:57 pm | |
| Arnaud Lacombe | Apr 10, 2012 9:57 am | |
| Alexander Motin | Apr 10, 2012 10:18 am | |
| Alexander Motin | Apr 10, 2012 10:53 am | |
| Arnaud Lacombe | Apr 10, 2012 11:45 am | |
| Alexander Motin | Apr 10, 2012 12:13 pm | |
| Mike Meyer | Apr 10, 2012 1:04 pm | |
| Arnaud Lacombe | Apr 10, 2012 1:50 pm | |
| Mike Meyer | Apr 10, 2012 2:19 pm | |
| Adrian Chadd | Apr 11, 2012 3:19 pm |
| Subject: | Re: [RFT][patch] Scheduling for HTT and not only | |
|---|---|---|
| From: | Alexander Motin (ma...@FreeBSD.org) | |
| Date: | Feb 15, 2012 8:41:08 pm | |
| List: | org.freebsd.freebsd-hackers | |
On 02/15/12 21:54, Jeff Roberson wrote:
On Wed, 15 Feb 2012, Alexander Motin wrote:
On 02/14/12 00:38, Alexander Motin wrote:
I see no much point in committing them sequentially, as they are quite orthogonal. I need to make one decision. I am going on small vacation next week. It will give time for thoughts to settle. May be I indeed just clean previous patch a bit and commit it when I get back. I've spent too much time trying to make these things formal and so far results are not bad, but also not so brilliant as I would like. May be it is indeed time to step back and try some more simple solution.
I've decided to stop those cache black magic practices and focus on things that really exist in this world -- SMT and CPU load. I've dropped most of cache related things from the patch and made the rest of things more strict and predictable: http://people.freebsd.org/~mav/sched.htt34.patch
This looks great. I think there is value in considering the other approach further but I would like to do this part first. It would be nice to also add priority as a greater influence in the load balancing as well.
I have feeling that for timeshare/idle threads balance should take into account not a priority, but a nice level. Priority is very unstable thing that is recalculated each time, while nice it is what really describes how much time thread should get in perspective and those values should be shuffled equally between CPUs. But I haven't thought about specific math yet.
-- Alexander Motin
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