From: Herbert Poetzl <herbert@13thfloor.at>
To: Chris Rivera <cmrivera@ufl.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] slab information utility
Date: Mon, 22 Sep 2003 06:23:08 +0200 [thread overview]
Message-ID: <20030922042308.GA8691@DUK2.13thfloor.at> (raw)
In-Reply-To: <1064199786.1199.29.camel@boobies.awol.org>
On Sun, Sep 21, 2003 at 11:03:06PM -0400, Chris Rivera wrote:
> Robert Love and I would like to announce the release of a new procps
> utility, slabtop. Slabtop displays detail kernel slab layer information
> in real time. The look of slabtop matches top's. Slabtop displays a
> statistics header along with the ?top? caches based on a sort criteria.
sounds good, downloaded the .src.rpm ... rebuilt and installed.
finally slabtop gives me an empty screen :( ...
# slabtop >x.log 2>&1
# echo $?
0
0000000: 756e 7265 636f 676e 697a 6162 6c65 2064 unrecognizable d
0000010: 6174 6120 696e 2073 6c61 6269 6e66 6f21 ata in slabinfo!
0000020: 0a65 7272 6f72 2072 6561 6469 6e67 2073 .error reading s
0000030: 6c61 6269 6e66 6f21 0a1b 2842 1b29 301b labinfo!..(B.)0.
0000040: 5b3f 3130 3439 681b 5b31 3b32 3472 1b5b [?1049h.[1;24r.[
0000050: 6d0f 1b5b 346c 1b5b 3f37 68 m..[4l.[?7h
best,
Herbert
cat /proc/slabinfo
slabinfo - version: 1.1 (statistics) (SMP)
kmem_cache 72 72 164 3 3 1 : 72 72 3 0 0 : 252 126 : 20 3 0 0
ip_fib_hash 32 144 24 1 1 1 : 144 1377 1 0 0 : 252 126 : 144 14 125 0
tcp_tw_bucket 74 74 104 2 2 1 : 370 165470 753 751 0 : 252 126 : 132075 3851 135164 5
tcp_bind_bucket 288 288 24 2 2 1 : 432 341599 54 52 0 : 252 126 : 109441 3012 112362 13
tcp_open_request 59 59 64 1 1 1 : 295 155059 1704 1703 0 : 252 126 : 158022 4844 161158 4
inet_peer_cache 154 154 48 2 2 1 : 231 107344 48 46 0 : 252 126 : 12380 1292 13615 0
ip_dst_cache 491 594 176 27 27 1 : 2486 685730 983 956 0 : 252 126 : 555443 7439 560414 1225
arp_cache 64 64 120 2 2 1 : 128 30165 164 162 0 : 252 126 : 8386 1158 9376 0
dm-snapshot-in 128 154 48 2 2 1 : 154 154 2 0 0 : 252 126 : 126 4 0 0
dm-snapshot-ex 0 0 24 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
kcopyd-jobs 512 513 200 27 27 1 : 513 513 27 0 0 : 252 126 : 485 54 0 0
dm io 0 0 36 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
blkdev_requests 7168 7200 96 180 180 1 : 8240 8240 206 26 0 : 252 126 : 7986 412 1017 7
nfs_write_data 0 0 352 0 0 1 : 0 0 0 0 0 : 124 62 : 0 0 0 0
nfs_read_data 0 0 336 0 0 1 : 0 0 0 0 0 : 124 62 : 0 0 0 0
nfs_page 0 0 96 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
devfsd_event 250 250 28 2 2 1 : 250 60649 385 383 0 : 252 126 : 1933 923 2471 0
journal_head 338 7772 56 15 116 1 : 56615 18277414 34518 34402 0 : 252 126 : 36746722 197015 36788548 120579
revoke_table 5 169 20 1 1 1 : 130 504 1 0 0 : 252 126 : 2 5 1 0
revoke_record 144 144 24 1 1 1 : 1566 190196 635 634 0 : 252 126 : 100326 2560 101686 565
dnotify_cache 0 0 28 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
file_lock_cache 185 185 104 5 5 1 : 370 502502 409 404 0 : 252 126 : 13090074 6934 13096557 9
fasync_cache 0 0 24 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
uid_cache 37 202 36 2 2 1 : 202 48253 2 0 0 : 252 126 : 4397 514 4874 0
skbuff_head_cache 449 575 172 25 25 1 : 759 2219495 118 93 0 : 252 126 : 2268621 18691 2276387 10575
sock 660 846 832 94 94 2 : 981 632340 1834 1740 0 : 124 62 : 5980366 14523 5989500 3062
sigqueue 144 270 140 7 10 1 : 270 2683274 5989 5979 0 : 252 126 : 42613190 45635 42639029 13800
kiobuf 0 0 64 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
cdev_cache 23 154 48 2 2 1 : 462 27600 10 8 0 : 252 126 : 1047 260 1273 1
bdev_cache 39 177 64 3 3 1 : 413 1697 7 4 0 : 252 126 : 411 26 390 1
mnt_cache 43 168 68 3 3 1 : 168 2415 3 0 0 : 252 126 : 55 27 45 0
inode_cache 74617 126616 492 15825 15827 1 : 729880 13731739 1099328 10083 0 : 124 62 : 19302616 2279366 20198830 209286
dentry_cache 35950 181104 116 5325 5488 1 : 1381446 52642301 865697 15156 0 : 252 126 : 58666873 1923444 59286660 402106
filp 5159 5202 112 153 153 1 : 5202 5539 153 0 0 : 252 126 : 4994 318 0 0
names_cache 9 9 4096 9 9 1 : 66 36459 25184 25175 0 : 60 30 : 130868604 56934 130900352 2
buffer_head 177731 198801 104 5373 5373 1 : 548303 14901772 22466 17093 0 : 252 126 : 19531729 157026 19423681 65138
mm_struct 479 486 144 18 18 1 : 513 801021 40 22 0 : 252 126 : 845646 7088 852440 44
vm_area_struct 13601 16200 76 324 324 1 : 16850 15741099 2348 2024 0 : 252 126 : 104593256 129204 104596469 110318
fs_cache 546 588 44 7 7 1 : 588 855766 8 1 0 : 252 126 : 845713 7019 852466 50
files_cache 387 387 424 43 43 1 : 414 395867 177 134 0 : 124 62 : 845396 7506 852245 271
signal_act 288 348 1344 114 116 1 : 366 194181 1825 1709 0 : 60 30 : 843323 11233 851105 1403
size-131072(DMA) 0 0 131072 0 0 32 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-131072 0 0 131072 0 0 32 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-65536(DMA) 0 0 65536 0 0 16 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-65536 0 0 65536 0 0 16 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-32768(DMA) 0 0 32768 0 0 8 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-32768 2 2 32768 2 2 8 : 3 3 3 1 0 : 0 0 : 0 0 0 0
size-16384(DMA) 0 0 16384 0 0 4 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-16384 2 2 16384 2 2 4 : 6 4884 291 289 0 : 0 0 : 0 0 0 0
size-8192(DMA) 0 0 8192 0 0 2 : 0 0 0 0 0 : 0 0 : 0 0 0 0
size-8192 6 8 8192 6 8 2 : 22 21412 768 760 0 : 0 0 : 0 0 0 0
size-4096(DMA) 0 0 4096 0 0 1 : 0 0 0 0 0 : 60 30 : 0 0 0 0
size-4096 156 246 4096 156 246 1 : 463 279737 78616 78370 0 : 60 30 : 1469009 166296 1550045 6545
size-2048(DMA) 0 0 2048 0 0 1 : 0 0 0 0 0 : 60 30 : 0 0 0 0
size-2048 178 178 2048 89 89 1 : 420 1697552 21331 21242 0 : 60 30 : 5378643 101798 5411501 47494
size-1024(DMA) 0 0 1024 0 0 1 : 0 0 0 0 0 : 124 62 : 0 0 0 0
size-1024 1616 1616 1024 404 404 1 : 1684 191356 2505 2101 0 : 124 62 : 363118 9751 368754 207
size-512(DMA) 0 0 512 0 0 1 : 0 0 0 0 0 : 124 62 : 0 0 0 0
size-512 240 240 512 30 30 1 : 296 62964 2569 2539 0 : 124 62 : 467583 9140 473925 143
size-256(DMA) 0 0 264 0 0 1 : 0 0 0 0 0 : 124 62 : 0 0 0 0
size-256 178 240 264 16 16 1 : 420 2506573 1364 1348 0 : 124 62 : 70892164 48800 70928186 11367
size-128(DMA) 0 0 136 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
size-128 8246 8372 136 299 299 1 : 8428 2116636 845 546 0 : 252 126 : 21917394 19588 21924100 4385
size-64(DMA) 0 0 72 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
size-64 2055 5565 72 105 105 1 : 232193 3324750 23380 23275 0 : 252 126 : 3123436 64272 3152098 11128
size-32(DMA) 0 0 40 0 0 1 : 0 0 0 0 0 : 252 126 : 0 0 0 0
size-32 3136 19019 40 207 209 1 : 87633 6746224 13433 13224 0 : 252 126 : 160859646 72752 160891961 24599
> Sample output of slabtop is as follows:
>
> Active / Total Objects (% used) : 42403 / 63315 (67.0%)
> Active / Total Slabs (% used) : 3461 / 3461 (100.0%)
> Active / Total Caches (% used) : 60 / 97 (61.9%)
> Active / Total Size (% used) : 10151.11K / 14245.87K (71.3%)
> Minimum / Average / Maximum Object : 0.02K / 0.22K / 128.00K
>
> OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
> 14000 7390 52% 0.07K 280 50 1120K size-64
> 10528 5280 50% 0.26K 752 14 3008K dentry_cache
> 9660 8602 89% 0.12K 322 30 1288K pte_chain
> 8368 4913 58% 0.47K 1046 8 4184K ext3_inode_cache
> 3300 3143 95% 0.07K 66 50 264K vm_area_struct
> 3190 1089 34% 0.06K 55 58 220K buffer_head
> 3024 2924 96% 0.04K 36 84 144K size-32
> 2506 1982 79% 0.27K 179 14 716K radix_tree_node
> 1782 1750 98% 0.14K 66 27 264K filp
> 891 864 96% 0.14K 33 27 132K size-128
> 869 862 99% 0.33K 79 11 316K inode_cache
> 318 274 86% 0.07K 6 53 24K bio
> 305 256 83% 0.06K 5 61 20K biovec-4
> 288 281 97% 0.02K 2 144 8K biovec-1
> 266 256 96% 0.20K 14 19 56K biovec-16
> 260 256 98% 0.76K 52 5 208K biovec-64
>
> I hope this tool will be of some use to all kernel developers. Robert
> has made procps packages available here:
>
> http://www.tech9.net/rml/procps/
>
> All bug reports and feature requests are welcome. Hopefully, slabtop
> will save the day.
>
> Chris
>
> -
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next prev parent reply other threads:[~2003-09-22 4:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-22 3:03 Chris Rivera
2003-09-22 4:23 ` Herbert Poetzl [this message]
2003-09-22 4:39 ` Robert Love
2003-09-22 4:43 ` Herbert Poetzl
2003-09-22 5:17 ` Robert Love
2003-09-22 13:16 ` Herbert Poetzl
2003-09-22 5:18 ` Andrew Morton
2003-09-22 5:21 ` Robert Love
2003-09-22 5:17 ` William Lee Irwin III
2003-09-22 5:25 ` Robert Love
2003-09-22 5:45 ` Muli Ben-Yehuda
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