From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>,
bzzz@tmi.comex.ru, adilger@clusterfs.com,
linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net
Subject: Re: [PATCH] concurrent block allocation for ext2 against 2.5.64
Date: Fri, 14 Mar 2003 22:20:25 -0800 [thread overview]
Message-ID: <20030315062025.GP20188@holomorphy.com> (raw)
In-Reply-To: <20030315054910.GN20188@holomorphy.com>
On Fri, Mar 14, 2003 at 08:54:55PM -0800, Andrew Morton wrote:
> > `dbench 512' will presumably do lots of IO and spend significant
> > time in I/O wait. You should see the effects of this change more
> > if you use fewer clients (say, 32) so it doesn't hit disk.
>
On Fri, Mar 14, 2003 at 09:49:10PM -0800, William Lee Irwin III wrote:
> Throughput 226.57 MB/sec 32 procs
> dbench 32 2>& 1 25.04s user 515.02s system 1069% cpu 50.516 total
It's too light a load... here's dbench 128.
Looks like dbench doesn't scale. It needs to learn how to spread itself
across disks if it's not to saturate a device queue while at the same
time generating enough cpu load to saturate cpus.
Is there a better (publicable/open/whatever) benchmark?
dbench 128:
Throughput 161.237 MB/sec 128 procs
dbench 128 2>& 1 143.85s user 3311.10s system 1219% cpu 4:43.27 total
vma samples %-age symbol name
c0106ff4 9134179 33.7261 default_idle
c01dc3b0 5570229 20.5669 __copy_to_user_ll
c01dc418 1773600 6.54865 __copy_from_user_ll
c0119058 731524 2.701 try_to_wake_up
c0108140 686952 2.53643 .text.lock.semaphore
c011a1bc 489415 1.80706 schedule
c0119dac 485196 1.79149 scheduler_tick
c011fadc 448048 1.65433 profile_hook
c0119860 356065 1.3147 load_balance
c0107d0c 267333 0.987072 __down
c011c4ff 249627 0.921696 .text.lock.sched
c0152ab0 223897 0.826694 __find_get_block_slow
c01dc510 222598 0.821897 atomic_dec_and_lock
c0168aac 218153 0.805485 d_lookup
c013ece4 194326 0.717509 check_highmem_ptes
c015f3dc 193112 0.713026 path_lookup
c01522a0 187115 0.690884 file_move
c010f6b8 166809 0.615908 timer_interrupt
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 48280256 552768 23744 0 0 0 0 1027 16 0 0 100 0
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15 1 0 45269376 556416 2913952 0 0 0 624 1056 9081 2 45 52 0
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
17 0 0 45296128 559136 2884576 0 0 4 12 1152 9749 2 44 54 0
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20 0 0 45296192 559776 2886176 0 0 0 620 1173 8638 2 53 45 0
31 0 0 45267072 562400 2912416 0 0 0 0 1023 7383 3 63 34 0
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22 0 0 45239040 561984 2941216 0 0 0 56 1169 9078 2 48 49 0
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
23 2 0 45263744 560928 2917184 0 0 0 1792 1225 9299 2 52 42 4
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
28 1 0 45282944 561472 2899712 0 0 0 3556 1120 8221 3 57 39 2
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22 1 0 45292480 563616 2888576 0 0 0 3620 1125 8714 2 52 43 2
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11 2 0 45270976 564608 2910240 0 0 0 484 1150 9030 3 53 41 3
15 1 0 45297856 562432 2884544 0 0 0 4060 1176 8291 2 52 43 2
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
24 1 0 45302144 563200 2880032 0 0 0 3496 1139 9189 3 51 45 2
29 1 0 45310592 564224 2871296 0 0 0 4328 1145 8822 3 53 43 2
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23 2 0 45298752 563584 2883552 0 0 0 792 1193 9421 3 47 47 4
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22 1 0 45303552 565600 2877024 0 0 0 3204 1150 9311 3 49 47 2
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
22 0 0 45291776 566368 2888288 0 0 0 3104 1138 8800 3 51 45 2
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
11 1 0 45330304 565376 2851520 0 0 0 3616 1123 9132 3 53 42 2
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
21 2 0 45357632 570848 2819616 0 0 0 3552 1154 9181 3 48 46 3
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
6 109 0 46647712 567616 1548000 0 0 288 1956 1182 10422 0 4 3 93
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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2 35 0 48042528 572320 227968 0 0 52 2540 1189 703 0 2 24 73
0 34 0 48061088 572544 209664 0 0 28 4124 1123 1935 0 1 24 75
0 29 0 48089696 573152 185568 0 0 76 3720 1132 2361 0 1 25 74
1 28 0 48097824 573248 178816 0 0 12 3616 1130 945 0 0 31 69
3 25 0 48105056 573408 174688 0 0 20 3112 1130 628 0 0 35 64
1 25 0 48126688 573824 152736 0 0 60 2400 1136 1972 0 1 40 59
0 25 0 48132000 574016 147616 0 0 28 2704 1126 516 0 0 36 63
0 24 0 48143136 574112 136832 0 0 12 2724 1126 816 0 0 35 65
0 23 0 48160480 574496 120800 0 0 48 4436 1192 1205 0 1 35 65
0 24 0 48155808 574752 118304 0 0 928 4848 1205 442 0 0 38 61
0 23 0 48163744 574816 117216 0 0 44 3108 1135 285 3 0 38 60
0 21 0 48192864 565920 99200 0 0 40 2368 1114 625 0 0 39 61
1 21 0 48197600 566048 94304 0 0 20 3212 1126 416 0 0 41 59
1 14 0 48206176 566048 92192 0 0 0 3244 1130 312 0 0 58 42
2 11 0 48217504 566080 83648 0 0 4 2536 1125 532 0 0 62 38
1 11 0 48241568 566592 59296 0 0 64 3300 1143 963 0 1 68 31
0 11 0 48242016 566624 58880 0 0 4 2788 1126 173 0 0 69 31
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 11 0 48242016 566624 58880 0 0 0 3648 1142 156 0 0 69 31
1 10 0 48253856 566944 46720 0 0 40 3644 1173 423 0 0 69 31
0 11 0 48256992 567040 43232 0 0 12 2644 1165 219 0 0 69 31
2 11 0 48261472 567136 38720 0 0 12 3048 1165 226 0 0 69 31
1 6 0 48268192 567200 35776 0 0 8 3608 1169 138 0 0 73 27
1 0 0 48288032 567552 22976 0 0 44 0 1132 142 0 0 88 12
0 0 0 48288288 567552 22976 0 0 0 180 1061 23 0 0 100 0
1 0 0 48288288 567552 22976 0 0 0 0 1026 21 0 0 100 0
0 0 0 48288096 567552 22976 0 0 0 0 1027 43 0 0 100 0
next prev parent reply other threads:[~2003-03-15 6:10 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-13 8:55 [PATCH] concurrent block allocation for ext2 against 2.5.64 Alex Tomas
2003-03-13 9:58 ` Andrew Morton
2003-03-13 19:17 ` Alex Tomas
2003-03-13 22:25 ` Andrew Morton
2003-03-13 23:03 ` Andreas Dilger
2003-03-13 23:10 ` Andrew Morton
2003-03-13 23:03 ` Alex Tomas
2003-03-13 23:25 ` Andrew Morton
2003-03-13 23:56 ` Andreas Dilger
2003-03-14 7:20 ` Alex Tomas
2003-03-14 20:59 ` Andreas Dilger
2003-03-14 21:14 ` Alex Tomas
2003-03-15 4:37 ` William Lee Irwin III
2003-03-15 4:54 ` Andrew Morton
2003-03-15 5:30 ` William Lee Irwin III
2003-03-15 5:43 ` Martin J. Bligh
2003-03-15 5:50 ` William Lee Irwin III
2003-03-15 5:49 ` William Lee Irwin III
2003-03-15 6:20 ` William Lee Irwin III [this message]
2003-03-15 6:44 ` Andrew Morton
2003-03-15 7:05 ` William Lee Irwin III
2003-03-15 8:24 ` William Lee Irwin III
2003-03-15 9:47 ` William Lee Irwin III
2003-03-15 11:58 ` William Lee Irwin III
2003-03-15 12:08 ` Andrew Morton
2003-03-15 12:25 ` William Lee Irwin III
2003-03-15 8:16 ` [Ext2-devel] " Alex Tomas
2003-03-15 8:29 ` William Lee Irwin III
2003-03-15 8:32 ` Alex Tomas
2003-03-15 9:23 ` William Lee Irwin III
2003-03-14 18:25 ` Martin J. Bligh
2003-03-14 19:30 ` [Ext2-devel] " Daniel Phillips
2003-03-14 19:55 ` Andrew Morton
2003-03-13 17:39 ` [Ext2-devel] " Andreas Dilger
2003-03-13 18:43 ` Alex Tomas
2003-03-13 19:09 ` Matthew Wilcox
2003-03-13 19:39 ` Andrew Morton
2003-03-13 19:23 ` Theodore Ts'o
2003-03-13 19:44 ` Andreas Dilger
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