Date: Fri, 14 Apr 1995 05:19:38 -0700 From: Faried Nawaz <fn@pain.csrv.uidaho.edu> To: questions@freefall.cdrom.com Subject: [2.0R] news server memleak? Message-ID: <199504141219.FAA26956@crow.csrv.uidaho.edu>
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hello,
i have a freebsd machine that acts as the news server for my campus.
i'm running inn1.4 (from the ports) on a micron p90 and 2.0-RELEASE.
i've installed a few patches to speed up innxmit, innd, etc...nothing
unusual. it has 32mb ram; i reserved 128mb for swap (though i've never
seen it above 30 or so); it has a simple vga video card and has two vtys.
the scsi controller is a bt946c; the drives are a 500mb quantum and a
2gig barracuda.
the machine & os appear to do quite well -- they've impressed my employers.
i've seen 20+ day uptimes; its response is quite spiffy, and it even managed
to impress the local novell dude (mainly due to the install disks :).
i've noticed a strange thing, though, and it puzzles me. yesterday (18 day
uptime) i noticed that the machine was living in swap. it had innd running
(ps said vsz was around 7.5mb), and had a few in.nnrpds running (ps said
vsz for each was just over a meg). i could not see how it all added up
to > 20mb, but i was 10mb into swap.
last night (a few hours ago, actually), i shutdown innd, kill -15'd the
few running nnrpds, and...found myself 3mb into swap. i ran a few
commands, and i produce their output below. i'm not quite sure how to
interpret the results (or even if i was using the right commands to
pinpoint the problem), though. help?
(
uptime is 19 days, 3 hours at the time of recording.
kern.maxvnodes = 2188
kern.maxproc = 1044
kern.maxfiles = 3404
hw.physmem = 33161216
hw.usermem = 26656768
maxusers (in the kernel config file) is set to 64.
i changed CHILD_MAX in /sys/sys/syslimits to 125; news couldn't fork
a lot of nnrpds...and this is a large campus (is there a better way?).
)
Script started on Fri Apr 14 04:40:34 1995
//newshound~# pstat -T
72/3404 files
2186 vnodes
3M/128M swap space
//newshound~# swapinfo -k
Device 1K-blocks Used Available Capacity
/dev/sd0b 131072 3668 127404 3%
//newshound~# vmstat -s
140205270 cpu context switches
517500840 device interrupts
47827105 software interrupts
27898289 traps
201589844 system calls
246510 swap pager pageins
619884 swap pager pages paged in
307442 swap pager pageouts
782911 swap pager pages paged out
127496 vnode pager pageins
487600 vnode pager pages paged in
0 vnode pager pageouts
0 vnode pager pages paged out
43640656 VM object cache lookups
43065520 VM object hits
61694 page daemon wakeups
50238478 pages examined by the page daemon
502501 pages reactivated
28207 intransit blocking page faults
447946629 zero fill pages allocated
9533202 zero fill pages zeroed
4553831 copy-on-write faults
28647694 total VM faults taken
32189702 pages freed
1017555 pages freed by daemon
12739142 pages freed by exiting processes
1289 pages active
187 pages inactive
1657 pages wired down
4498 pages free
4096 bytes per page
50747622 total name lookups
cache hits (46% pos + 0% neg) system 27% per-process
deletions 0%, falsehits 0%, toolong 0%
//newshound~# vmstat -m
Memory statistics by bucket size
Size In Use Free Requests HighWater Couldfree
16 1162 630 23571935 1280 0
32 1372 3748 13270541 640 0
64 2369 2111 19052481 320 57528
128 3343 1425 173047271 160 0
256 2257 575 25081958 80 0
512 18 6 1673 40 0
1K 8 60 27976272 20 17931306
2K 7 9 126 10 0
4K 8 2 48 5 0
8K 4 5 5561 5 0
16K 0 0 8 5 0
Memory usage type by bucket size
Size Type(s)
16 devbuf, routetbl, vnodes, VM objhash, VM pgdata, proc, temp
32 devbuf, pcb, routetbl, pgrp, session, VM mapent, VM pager, VM pgdata,
subproc, LFS segment, in_multi, ether_multi, temp
64 devbuf, routetbl, ifaddr, namecache, VM pgdata, file, lockf,
LFS segment, temp
128 mbuf, devbuf, pcb, routetbl, fragtbl, zombie, ifaddr, soopts, cred,
vnodes, VM map, VM object, VM pgdata, file desc, temp, ttys
256 devbuf, socket, pcb, vnodes, VM map, VM pgdata, file desc, proc,
subproc, FFS node, temp
512 mbuf, ioctlops, mount, UFS mount, VM pgdata, file desc, temp
1K devbuf, namei, UFS mount, VM pgdata, temp
2K devbuf, UFS mount, VM pgdata, ttys
4K devbuf, ioctlops, VM pgdata
8K namecache, UFS quota, UFS mount, VM pgdata, temp
16K VM pgdata
Memory statistics by type Type Kern
Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)
mbuf 21 3K 52K 9831K155026281 0 0 128,512
devbuf 15 37K 45K 9831K 63 0 0 16,32,64,128,256,1K,2K,4K
socket 41 11K 63K 9831K 326097 0 0 256
pcb 62 11K 47K 9831K 407614 0 0 32,128,256
routetbl 190 15K 16K 9831K 42522 0 0 16,32,64,128
fragtbl 0 0K 1K 9831K 8 0 0 128
zombie 0 0K 1K 9831K 260182 0 0 128
ifaddr 6 1K 1K 9831K 6 0 0 64,128
soopts 2 1K 1K 9831K 7048 0 0 128
namei 0 0K 12K 9831K 27971963 0 0 1K
ioctlops 0 0K 4K 9831K 5 0 0 512,4K
cred 8 1K 11K 9831K 54477 0 0 128
pgrp 15 1K 1K 9831K 10303 0 0 32
session 12 1K 1K 9831K 8223 0 0 32
mount 5 3K 3K 9831K 5 0 0 512
vnodes 2214 276K 282K 9831K 11091 0 0 16,128,256
namecache 2189 145K 145K 9831K 2189 0 0 64,8K
UFS quota 1 8K 8K 9831K 1 0 0 8K
UFS mount 13 23K 23K 9831K 13 0 0 512,1K,2K,8K
VM map 24 6K 25K 9831K 1449934 0 0 128,256
VM mapent 325 11K 52K 9831K 262009 0 0 32
VM object 833 105K 223K 9831K 15784314 0 0 128
VM objhash 569 9K 11K 9831K 11781486 0 0 16
VM pager 704 22K 45K 9831K 12093352 0 0 32
VM pgdata 839 35K 178K 9831K 12405218 0 0 16,32,64,128,256,512,1K,2K,4K,8K,16K
file 72 5K 27K 9831K 15671661 0 0 64
file desc 25 5K 20K 9831K 262991 0 0 128,256,512
lockf 1 1K 1K 9831K 2692926 0 0 64
proc 23 6K 24K 9831K 260264 0 0 16,256
subproc 19 1K 3K 9831K 260829 0 0 32,256
LFS segment 0 0K 4K 9831K 795729 0 0 32,64
FFS node 2117 530K 547K 9831K 24148614 0 0 256
in_multi 2 1K 1K 9831K 2 0 0 32
ether_multi 1 1K 1K 9831K 1 0 0 32
temp 99 11K 27K 9831K 8896 0 0 16,32,64,128,256,512,1K,8K
ttys 101 15K 16K 9831K 1561 0 0 128,2K
Memory Totals: In Use Free Requests
1287K 710K 282007878
//newshound~# top -b
load averages: 0.00, 0.02, 0.00 04:40:47
17 processes: 1 running, 16 sleeping
Memory: Real: 1048K/13276K Virt: 36160K/317024K Free: 17992K
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
21045 root 18 0 872K 944K sleep 0:00 0.20% 0.10% bash
66 root 2 0 192K 184K sleep 3:58 0.05% 0.05% routed
21050 root 30 0 292K 684K run 0:00 0.00% 0.00% top
20943 root 2 0 204K 512K sleep 0:00 0.00% 0.00% rlogind
20955 root 18 0 876K 920K sleep 0:00 0.00% 0.00% bash
20944 fn 18 0 440K 264K sleep 0:00 0.00% 0.00% csh
59 root 18 0 376K 220K sleep 0:58 0.00% 0.00% cron
1 root 10 0 404K 72K sleep 0:02 0.00% 0.00% init
21043 root 3 0 220K 472K sleep 0:00 0.00% 0.00% script
21044 root 3 0 220K 236K sleep 0:00 0.00% 0.00% script
29861 root 3 0 152K 228K sleep 0:00 0.00% 0.00% getty
21641 root 3 0 152K 228K sleep 0:00 0.00% 0.00% getty
69 root 2 0 840K 784K sleep 3:02 0.00% 0.00% named
48 root 2 0 192K 304K sleep 12:53 0.00% 0.00% syslogd
62 daemon 2 0 204K 272K sleep 0:01 0.00% 0.00% portmap
//newshound~# vmstat
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr f0 s0 s1 in sy cs us sy id
1 0 0 36052 17976 17 0 0 0 19 30 0 4 29 313 122 85 3 3 94
//newshound~# ps alxww
UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAND
0 0 0 0 -18 0 0 0 sched DLs ?? 0:00.00 (swapper)
0 1 0 0 10 0 404 72 wait Is ?? 0:02.30 /sbin/init --
0 2 0 19 -18 0 0 12 psleep DL ?? 10:08.63 (pagedaemon)
0 3 0 0 -6 0 0 12 update DL ?? 16:24.08 (update)
0 48 1 0 2 0 192 304 select Ss ?? 12:53.59 syslogd
0 59 1 0 18 0 376 220 pause Is ?? 0:58.16 cron
1 62 1 0 2 0 204 272 select Is ?? 0:01.37 portmap
0 66 1 0 2 0 192 184 select Ss ?? 3:58.80 routed -q
0 69 1 0 2 0 840 784 select Is ?? 3:02.48 named
0 82 1 0 2 0 424 232 netcon Is ?? 0:06.81 sendmail: accepting connections (sendmail)
0 85 1 0 2 0 244 268 select Is ?? 0:02.15 inetd
0 20943 85 0 2 0 204 512 select S ?? 0:00.74 rlogind
1001 20944 20943 0 18 0 440 264 pause Is p0 0:00.17 -csh (csh)
0 20955 20944 0 18 0 876 920 pause S p0 0:00.93 -su (bash)
0 21043 20955 0 3 0 220 472 ttyin S+ p0 0:00.05 script
0 21044 21043 0 3 0 220 236 ttyin S+ p0 0:00.03 script
0 21045 21044 1 18 0 872 944 pause Ss p1 0:00.16 sh -i (bash)
0 21052 21045 2 28 0 436 240 - R+ p1 0:00.00 ps alxww
0 21641 1 6 3 0 152 228 ttyin Is+ v0 0:00.41 /usr/libexec/getty Pc ttyv0
0 29861 1 2 3 0 152 228 ttyin Is+ v1 0:00.08 /usr/libexec/getty Pc ttyv1
//newshound~# exit
exit
Script done on Fri Apr 14 04:41:02 1995
thanks for your time,
faried.
--
fn@uidaho.edu
fn::=`faried nawaz`, uidaho::=`university of idaho, moscow, id 83844`,
disclaimer::=`my parents, bosses, and friends may or may not agree with
this message`.
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