From: "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>
To: akpm@digeo.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: anticipatory scheduling questions
Date: Sat, 01 Mar 2003 11:25:18 +0100 [thread overview]
Message-ID: <20030301102518.21569.qmail@linuxmail.org> (raw)
[-- Attachment #1: Type: text/plain, Size: 942 bytes --]
----- Original Message -----
> > It wasn't a typo... In fact, both deadline and AS give roughly the same
> > timings (one second up or down). But I
> > still don't understand why 2.5 is performing so much worse than 2.4.
>
> Me either. It's a bug.
>
> Does basic 2.5.63 do the same thing? Do you have a feel for when it started
> happening?
This has happened since the moment I switched from 2.4 to 2.5.63-mm1.
> > Could a "vmstat" or "iostat" dump be interesting?
> 2.4 versus 2.5 would be interesting, yes.
I have retested this with 2.4.20-2.54, 2.5.63 and 2.5.63-mm1...
and have attached the files to this message (I think pasting them
here would result in wrapping, making it harder to read).
If you need more testing or benchmarking, ask for it :-)
Thanks!
--
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[-- Attachment #2: vmstat-2.4.20-2.54 --]
[-- Type: application/octet-stream, Size: 949 bytes --]
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 0 121008 4028 70708 0 0 705 49 187 565 20 12 67
0 1 0 0 118460 4048 71564 0 0 876 0 155 1178 38 6 56
0 1 0 0 114556 4092 72996 0 0 1372 0 210 1471 29 7 64
1 0 0 0 112504 4128 74764 0 0 1804 0 247 698 29 1 70
1 0 0 0 111016 4128 76204 0 0 1440 256 209 371 0 0 100
0 1 0 0 108076 4128 79052 0 0 2848 0 190 518 1 1 98
1 0 0 0 105004 4128 82028 0 0 2976 0 195 860 0 4 96
2 0 0 0 102028 4128 84908 0 0 2880 0 192 2184 3 4 93
3 0 0 0 99836 4128 86796 0 0 1472 0 148 9283 41 8 51
2 0 0 0 98740 4128 86872 0 0 0 256 166 2027 28 4 68
[-- Attachment #3: vmstat-2.5.63 --]
[-- Type: application/octet-stream, Size: 1659 bytes --]
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 0 117228 4240 76184 0 0 573 43 1435 413 17 8 76
0 2 0 0 116540 4252 76596 0 0 424 0 1109 694 31 4 65
4 0 0 0 111260 4280 78128 0 0 1456 0 1170 1289 82 18 0
1 0 0 0 110140 4336 78872 0 0 800 0 1069 752 92 8 0
0 1 0 0 108012 4340 80932 0 0 2064 0 1107 492 50 50 0
1 1 0 0 105596 4340 83068 0 0 2136 0 1125 555 67 33 0
1 0 0 0 104156 4340 84640 0 0 1572 0 1112 495 33 67 0
0 1 0 0 102868 4340 85940 0 0 1300 0 1114 564 50 50 0
0 1 0 0 101812 4340 87432 0 0 1492 0 1111 689 50 50 0
0 1 0 0 100636 4340 88588 0 0 1156 0 1104 821 75 25 0
0 1 1 0 99548 4340 89720 0 0 1132 696 1099 1017 50 50 0
1 1 0 0 99044 4340 90200 0 0 480 0 1075 937 60 40 0
0 1 0 0 98596 4340 90740 0 0 540 0 1086 1134 67 33 0
0 1 0 0 98148 4340 91196 0 0 456 0 1086 1327 57 43 0
3 0 0 0 97508 4340 91752 0 0 348 0 1074 2920 82 18 0
2 0 0 0 96716 4340 92004 0 0 0 124 1032 2029 29 6 65
1 0 0 0 96716 4340 92004 0 0 0 0 1127 477 1 0 99
1 0 0 0 96716 4340 92036 0 0 32 0 1017 1421 20 1 79
3 0 0 0 99476 4340 91728 0 0 4 88 1150 5771 35 16 48
[-- Attachment #4: vmstat-2.5.63-mm1 --]
[-- Type: application/octet-stream, Size: 2135 bytes --]
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 0 122484 4148 72140 0 0 908 73 1734 702 26 12 62
3 0 0 0 120740 4164 72868 0 0 744 0 1195 1002 36 8 56
2 1 0 0 116364 4192 74056 0 0 1108 0 1140 1159 87 13 0
2 0 0 0 115412 4244 74660 0 0 656 0 1116 718 94 6 0
1 1 0 0 114964 4248 75144 0 0 488 4 1146 581 0 100 0
2 0 0 0 114404 4248 75672 0 0 528 0 1157 572 50 50 0
3 0 0 0 113956 4248 76156 0 0 484 0 1145 565 100 0 0
1 1 0 0 113396 4248 76680 0 0 524 0 1157 592 33 67 0
1 1 0 0 112948 4248 77128 0 0 448 0 1133 588 50 50 0
3 0 0 0 112580 4248 77568 0 0 440 32 1139 659 50 50 0
1 1 0 0 112076 4248 78032 0 0 464 0 1139 655 33 67 0
2 0 0 0 111684 4248 78452 0 0 420 0 1130 552 67 33 0
2 0 0 0 111236 4248 78872 0 0 420 0 1129 741 67 33 0
2 0 0 0 110788 4248 79344 0 0 472 0 1142 746 33 67 0
1 1 0 0 110092 4248 79812 0 0 468 16 1143 829 80 20 0
1 1 0 0 109588 4248 80316 0 0 504 0 1150 893 50 50 0
3 0 0 0 109140 4248 80776 0 0 460 0 1140 851 50 50 0
1 1 0 0 108748 4248 81196 0 0 420 0 1128 921 50 50 0
1 1 0 0 108356 4248 81592 0 0 396 0 1123 922 50 50 0
2 1 0 0 108132 4248 81792 0 0 200 564 1135 539 67 33 0
1 1 0 0 107908 4248 82004 0 0 212 0 1116 628 33 67 0
3 0 0 0 107548 4248 82436 0 0 432 0 1133 960 60 40 0
1 1 0 0 107100 4248 82884 0 0 448 0 1135 1484 57 43 0
4 0 0 0 106484 4248 83452 0 0 360 0 1115 1548 86 14 0
2 0 0 0 105636 4248 83712 0 0 8 0 1170 2256 41 5 54
next reply other threads:[~2003-03-01 10:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-01 10:25 Felipe Alfaro Solana [this message]
2003-03-01 10:40 ` anticipatory scheduling questions Andrew Morton
2003-03-01 11:51 ` David Lang
2003-03-01 17:15 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2003-03-02 21:50 Felipe Alfaro Solana
2003-03-02 11:40 Felipe Alfaro Solana
2003-03-02 20:43 ` Andrew Morton
2003-03-01 14:48 Felipe Alfaro Solana
[not found] <fa.g5ol5kg.cgoq0g@ifi.uio.no>
[not found] ` <fa.hp882fv.1u0orj9@ifi.uio.no>
2003-03-01 12:48 ` Ed Tomlinson
2003-02-28 23:12 Felipe Alfaro Solana
2003-02-28 23:16 ` Andrew Morton
2003-02-28 14:38 Felipe Alfaro Solana
2003-02-28 19:14 ` Andrew Morton
2003-02-28 12:18 Felipe Alfaro Solana
2003-02-28 12:44 ` Andrew Morton
2003-02-27 22:24 Felipe Alfaro Solana
2003-02-27 23:26 ` Andrew Morton
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