From: "Prakash K. Cheemplavam" <prakashkc@gmx.de>
To: Jens Axboe <axboe@suse.de>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org, nickpiggin@yahoo.com.au
Subject: Re: Time sliced CFQ io scheduler
Date: Fri, 03 Dec 2004 10:12:29 +0100 [thread overview]
Message-ID: <41B02DFD.9090503@gmx.de> (raw)
In-Reply-To: <20041203070108.GA10492@suse.de>
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Jens Axboe schrieb:
> On Thu, Dec 02 2004, Prakash K. Cheemplavam wrote:
>
>> 0 3 3080 2208 1156 817712 0 0 3592 75624 1326 2289 1 36 0
>> 63
>> 0 3 3080 2664 1156 818240 0 0 5124 15692 1302 992 1 18 0
>> 81
>> 0 3 3080 2580 1160 815832 0 0 4356 155792 1375 1064 1 39
>> 0 60
>> 0 3 3080 2472 1160 817124 0 0 3076 100852 1345 1138 1 23
>> 0 76
>> 2 4 3080 2836 1148 816228 0 0 3336 100412 1352 1379 1 47
>> 0 52
>> 0 4 3080 2708 1144 815964 0 0 3844 48908 1343 871 1 25 0
>> 74
>> 0 3 3080 2748 1152 815984 0 0 3332 71996 1338 843 1 27 0
>> 72
>
>
> Can you try with the patch that is in the parent of this thread? The
> above doesn't look that bad, although read performance could be better
> of course. But try with the patch please, I'm sure it should help you
> quite a lot.
>
It actually got worse: Though the read rate seems accepteble, it is not, as
interactivity is dead while writing. I cannot start porgrammes, other programmes
which want to do i/o pretty much hang. This is only while writing. While reading
there is no such problem.
Prakash
5 2692 5440 1640 917964 0 0 2332 72364 1337 782 1 28 0 71
0 5 2692 5536 1540 917116 0 0 2116 85360 1346 785 2 27 0 71
1 4 2692 7016 1496 919488 0 0 2152 71664 1329 740 3 29 0 68
0 4 2692 5112 1476 922536 0 0 872 110592 1328 798 0 17 0 83
0 4 2692 5560 1492 922144 0 0 1316 57348 1323 2162 1 21 0 78
0 4 2692 5240 1500 921808 0 0 2088 92200 1352 1285 1 26 0 73
0 4 2692 5816 1576 922064 0 0 1352 60716 1316 737 1 5 0 94
0 5 2692 5484 1588 920004 0 0 2072 87732 1327 3522 2 50 0 48
0 4 2692 5696 1660 920628 0 0 956 97284 1336 676 1 28 0 71
0 4 2692 5368 1592 921808 0 0 1296 23208 1367 4870 2 35 0 63
0 4 2692 5176 1628 922708 0 0 1576 67932 1400 721 0 4 0 96
1 4 2692 5496 1684 922604 0 0 2372 53216 1320 684 1 6 0 93
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 4 2692 6432 1744 924664 0 0 3144 31484 1331 651 1 5 0 94
0 4 2692 5496 1724 922056 0 0 2336 117040 1306 7770 1 63 0 36
0 4 2692 5500 1724 921588 0 0 2576 28992 1314 1244 1 26 0 73
0 5 2692 5484 1728 919340 0 0 1168 128796 1334 77435 2 45 0 53
0 4 2692 5432 1756 920864 0 0 1488 100392 1325 1100 1 25 0 74
1 4 2692 5368 1772 921900 0 0 1312 52180 1312 2087 1 21 0 78
0 4 2692 5240 1716 922272 0 0 2076 56352 1305 939 1 13 0 86
0 4 2692 5496 1732 921592 0 0 2596 68576 1320 1170 1 18 0 81
0 4 2692 5368 1776 921364 0 0 1588 21904 1281 1201 1 23 0 76
0 4 2692 5516 1852 921840 0 0 6560 93864 1593 967 1 8 0 91
0 4 2692 5176 1816 922148 0 0 1068 73728 1581 4683 2 37 0 61
0 4 2692 5484 1756 922408 0 0 2096 73632 1450 1456 2 20 0 78
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next prev parent reply other threads:[~2004-12-03 9:13 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-02 13:04 Time sliced CFQ io scheduler Jens Axboe
2004-12-02 13:48 ` Jens Axboe
2004-12-02 19:48 ` Andrew Morton
2004-12-02 19:52 ` Jens Axboe
2004-12-02 20:19 ` Andrew Morton
2004-12-02 20:19 ` Jens Axboe
2004-12-02 20:34 ` Andrew Morton
2004-12-02 20:37 ` Jens Axboe
2004-12-07 23:11 ` Nick Piggin
2004-12-02 22:18 ` Prakash K. Cheemplavam
2004-12-03 7:01 ` Jens Axboe
2004-12-03 9:12 ` Prakash K. Cheemplavam [this message]
2004-12-03 9:18 ` Jens Axboe
2004-12-03 9:35 ` Prakash K. Cheemplavam
2004-12-03 9:43 ` Jens Axboe
2004-12-03 9:26 ` Andrew Morton
2004-12-03 9:34 ` Prakash K. Cheemplavam
2004-12-03 9:39 ` Jens Axboe
2004-12-03 9:54 ` Prakash K. Cheemplavam
[not found] ` <41B03722.5090001@gmx.de>
2004-12-03 10:31 ` Jens Axboe
2004-12-03 10:38 ` Jens Axboe
2004-12-03 10:45 ` Prakash K. Cheemplavam
2004-12-03 10:48 ` Jens Axboe
2004-12-03 11:27 ` Prakash K. Cheemplavam
2004-12-03 11:29 ` Jens Axboe
2004-12-03 11:52 ` Prakash K. Cheemplavam
2004-12-08 0:37 ` Andrea Arcangeli
2004-12-08 0:54 ` Nick Piggin
2004-12-08 1:37 ` Andrea Arcangeli
2004-12-08 1:47 ` Nick Piggin
2004-12-08 2:09 ` Andrea Arcangeli
2004-12-08 2:11 ` Andrew Morton
2004-12-08 2:22 ` Andrea Arcangeli
2004-12-08 6:52 ` Jens Axboe
2004-12-08 2:00 ` Andrew Morton
2004-12-08 2:08 ` Andrew Morton
2004-12-08 6:55 ` Jens Axboe
2004-12-08 2:20 ` Andrea Arcangeli
2004-12-08 2:25 ` Andrew Morton
2004-12-08 2:33 ` Andrea Arcangeli
2004-12-08 2:33 ` Nick Piggin
2004-12-08 2:51 ` Andrea Arcangeli
2004-12-08 3:02 ` Nick Piggin
2004-12-08 6:58 ` Jens Axboe
2004-12-08 7:14 ` Nick Piggin
2004-12-08 7:20 ` Jens Axboe
2004-12-08 7:29 ` Nick Piggin
2004-12-08 7:32 ` Jens Axboe
2004-12-08 7:30 ` Andrew Morton
2004-12-08 7:36 ` Jens Axboe
2004-12-08 13:48 ` Jens Axboe
2004-12-08 6:55 ` Jens Axboe
2004-12-08 7:08 ` Nick Piggin
2004-12-08 7:11 ` Jens Axboe
2004-12-08 7:19 ` Nick Piggin
2004-12-08 7:26 ` Jens Axboe
2004-12-08 9:35 ` Jens Axboe
2004-12-08 10:08 ` Jens Axboe
2004-12-08 12:47 ` Jens Axboe
2004-12-08 10:52 ` Helge Hafting
2004-12-08 10:49 ` Jens Axboe
2004-12-08 6:49 ` Jens Axboe
2004-12-02 14:28 ` Giuliano Pochini
2004-12-02 14:41 ` Jens Axboe
2004-12-04 13:05 ` Giuliano Pochini
-- strict thread matches above, loose matches on Subject: below --
2004-12-03 20:52 Chuck Ebbert
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