Date: Thu, 09 May 2002 09:19:51 -0400 From: "MikeM" <MyRaQ@mgm51.com> To: freebsd-stable@freebsd.org Subject: Steadily increasing memory usage on a lightly loaded server Message-ID: <200205090919510568.03BA6562@sentry.24cl.com>
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I'm running a web server that is lightly loaded, only about 15MB of bandwidth usage per day. Ever since the recent kernel patches, I have been noticing that the memory usage is slowly, but surely, notching up. The server has about 700MB of memory. About a day after a reboot, the top command shows all except for 40MB being used, but I do not see any process that is using it. About three days after a reboot, swap starts to be used, albeit only a little swap. I've been running 4.5 on this server since it came out, and I never saw these symtpoms until the recent kernel patches. How can I find out what is using all this memory?
Following are three snapshots: (1)dmesg (2)top command right after a reboot (3)top command after 5 days of running.
(1)dmesg****************************************
Copyright (c) 1992-2002 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.5-RELEASE-p4 #7: Fri May 3 10:02:00 EDT 2002
mike@[snip]:/usr/obj/usr/src/sys/STABLE4FW
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium III/Pentium III Xeon/Celeron (797.48-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x686 Stepping = 6
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory = 805224448 (786352K bytes)
avail memory = 778473472 (760228K bytes)
Preloaded elf kernel "kernel" at 0xc0468000.
Pentium Pro MTRR support enabled
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <ServerWorks NB6635 3.0LE host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pci0: <S3 Savage 4 graphics accelerator> at 1.0
fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0x2200-0x223f mem 0xfea00000-0xfeafffff,0xfeb7f000-0xfeb7ffff irq 10 at device 2.0 on pci0
fxp0: Ethernet address 00:06:29:1f:27:61
inphy0: <i82555 10/100 media interface> on miibus0
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isab0: <ServerWorks IB6566 PCI to ISA bridge> at device 15.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <ServerWorks ROSB4 ATA33 controller> port 0x700-0x70f at device 15.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ohci0: <OHCI (generic) USB controller> mem 0xfeb7e000-0xfeb7efff irq 7 at device 15.2 on pci0
usb0: OHCI version 1.0, legacy support
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: (unknown) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pcib1: <ServerWorks NB6635 3.0LE host to PCI bridge> on motherboard
pci1: <PCI bus> on pcib1
ahc0: <Adaptec aic7892 Ultra160 SCSI adapter> port 0x2300-0x23ff mem 0xeffff000-0xefffffff irq 9 at device 3.0 on pci1
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs
orm0: <Option ROM> at iomem 0xc0000-0xc9fff on isa0
fdc0: direction bit not set
fdc0: cmd 3 failed at out byte 1 of 3
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x100>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A, console
sio1: configured irq 3 not in bitmap of probed irqs 0
ppc0: parallel port not found.
IP packet filtering initialized, divert disabled, rule-based forwarding disabled, default to deny, logging limited to 10
packets/entry by default
acd0: CDROM <CRN-8241B> at ata0-master using PIO4
Waiting 15 seconds for SCSI devices to settle
pass2 at ahc0 bus 0 target 8 lun 0
pass2: <IBM FTlV1 S2 0> Fixed Processor SCSI-2 device
pass2: 3.300MB/s transfers
da0 at ahc0 bus 0 target 0 lun 0
da0: <IBM-PSG DDYS-T18350M M S9AA> Fixed Direct Access SCSI-3 device
da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing Enabled
da0: 17357MB (35548320 512 byte sectors: 255H 63S/T 2212C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <IBM-ESXS ST336605LC !# B243> Fixed Direct Access SCSI-3 device
da1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing Enabled
da1: 34715MB (71096640 512 byte sectors: 255H 63S/T 4425C)
Mounting root from ufs:/dev/da0s1a
2)top command right after a reboot ***************************************
last pid: 264; load averages: 0.07, 0.07, 0.03
up 0+00:03:00 10:19:07
31 processes: 1 running, 30 sleeping
CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 11M Active, 10M Inact, 22M Wired, 32K Cache, 26M Buf, 707M Free
Swap: 500M Total, 500M Free
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
253 root 2 0 2140K 1768K select 0:00 0.00% 0.00% sshd
264 root 28 0 1904K 1140K RUN 0:00 0.00% 0.00% top
245 postfix 2 0 1072K 836K select 0:00 0.00% 0.00% nqmgr
146 root 2 0 6296K 4368K select 0:00 0.00% 0.00% httpd
186 mysql 2 0 35096K 4808K poll 0:00 0.00% 0.00% mysqld
102 root 2 0 940K 636K select 0:00 0.00% 0.00% syslogd
254 mike 10 0 636K 436K wait 0:00 0.00% 0.00% sh
256 root 18 0 1252K 896K pause 0:00 0.00% 0.00% csh
238 root 2 0 1008K 768K select 0:00 0.00% 0.00% master
246 postfix 2 0 1056K 832K select 0:00 0.00% 0.00% cleanup
258 root 10 0 1048K 828K wait 0:00 0.00% 0.00% bash
249 postfix 2 0 1064K 868K select 0:00 0.00% 0.00% smtp
106 root 2 0 2496K 1560K select 0:00 0.00% 0.00% ntpd
248 root 2 0 1092K 856K select 0:00 0.00% 0.00% local
149 root 10 0 644K 444K wait 0:00 0.00% 0.00% sh
244 postfix 2 0 1016K 796K select 0:00 0.00% 0.00% pickup
247 postfix 2 0 1016K 764K select 0:00 0.00% 0.00% trivial-rewrit
184 root 2 0 912K 584K select 0:00 0.00% 0.00% couriertcpd
250 root 3 0 948K 660K ttyin 0:00 0.00% 0.00% getty
252 root 3 0 948K 660K ttyin 0:00 0.00% 0.00% getty
251 root 3 0 948K 660K ttyin 0:00 0.00% 0.00% getty
157 root 2 0 1056K 632K select 0:00 0.00% 0.00% authdaemond.pl
117 root 10 0 984K 740K nanslp 0:00 0.00% 0.00% cron
242 root 2 0 2096K 1592K select 0:00 0.00% 0.00% sshd
115 root 2 0 1056K 780K select 0:00 0.00% 0.00% inetd
188 root -6 0 884K 476K piperd 0:00 0.00% 0.00% logger
133 root 2 0 2096K 1588K select 0:00 0.00% 0.00% adminsshd
207 www 2 0 6296K 4368K select 0:00 0.00% 0.00% httpd
208 www 18 0 6296K 4368K lockf 0:00 0.00% 0.00% httpd
174 root 2 0 1056K 632K select 0:00 0.00% 0.00% authdaemond.pl
175 root 2 0 1056K 632K select 0:00 0.00% 0.00% authdaemond.pl
(3)top command after 5 days of running.************************************
last pid: 12100; load averages: 0.00, 0.00, 0.00
up 5+22:26:36 08:42:43
33 processes: 1 running, 32 sleeping
CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 23M Active, 618M Inact, 69M Wired, 40M Cache, 86M Buf, 1328K Free
Swap: 500M Total, 64K Used, 500M Free
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
245 postfix 2 0 1080K 744K select 0:21 0.00% 0.00% nqmgr
106 root 2 0 2504K 1204K select 0:11 0.00% 0.00% ntpd
146 root 2 0 6344K 3692K select 0:10 0.00% 0.00% httpd
186 mysql 2 0 35096K 3920K poll 0:03 0.00% 0.00% mysqld
238 root 2 0 1008K 688K select 0:03 0.00% 0.00% master
117 root 10 0 984K 644K nanslp 0:01 0.00% 0.00% cron
102 root 2 0 948K 560K select 0:01 0.00% 0.00% syslogd
11209 www 18 0 6412K 3744K lockf 0:00 0.00% 0.00% httpd
115 root 2 0 1056K 684K select 0:00 0.00% 0.00% inetd
11269 www 18 0 6920K 4552K lockf 0:00 0.00% 0.00% httpd
12100 root 28 0 1904K 1012K RUN 0:00 0.00% 0.00% top
12089 root 2 0 2140K 1460K select 0:00 0.00% 0.00% sshd
133 root 2 0 2096K 1132K select 0:00 0.00% 0.00% adminsshd
242 root 2 0 2096K 1120K select 0:00 0.00% 0.00% sshd
157 root 2 0 1056K 492K select 0:00 0.00% 0.00% authdaemond.pl
184 root 2 0 912K 492K select 0:00 0.00% 0.00% couriertcpd
174 root 2 0 1056K 492K select 0:00 0.00% 0.00% authdaemond.pl
175 root 2 0 1056K 492K select 0:00 0.00% 0.00% authdaemond.pl
11208 www 18 0 6400K 3736K lockf 0:00 0.00% 0.00% httpd
11272 www 18 0 6400K 3832K lockf 0:00 0.00% 0.00% httpd
11219 www 18 0 6400K 3736K lockf 0:00 0.00% 0.00% httpd
11270 www 18 0 6412K 3744K lockf 0:00 0.00% 0.00% httpd
11271 www 2 0 6400K 3836K select 0:00 0.00% 0.00% httpd
11273 www 18 0 6400K 3736K lockf 0:00 0.00% 0.00% httpd
12092 root 18 0 1252K 800K pause 0:00 0.00% 0.00% csh
12090 mike 10 0 636K 252K wait 0:00 0.00% 0.00% sh
12046 postfix 2 0 1000K 648K select 0:00 0.00% 0.00% pickup
12094 root 10 0 1048K 716K wait 0:00 0.00% 0.00% bash
149 root 10 0 644K 256K wait 0:00 0.00% 0.00% sh
250 root 3 0 948K 564K ttyin 0:00 0.00% 0.00% getty
252 root 3 0 948K 564K ttyin 0:00 0.00% 0.00% getty
251 root 3 0 948K 564K ttyin 0:00 0.00% 0.00% getty
188 root -6 0 884K 412K piperd 0:00 0.00% 0.00% logger
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