I posted the following message to misc@ last May 31 but got no replies.
The problem has gotten worse, even though I've now raised
kern.maxfiles=16384
kern.maxvnodes=16384.
Here is the original message, with a current dmesg and /etc/sysctl.conf:
Hi all,
This morning httpd was failing to deliver files because of a "too many open
files" error. I'd previously bumped kern.maxfiles from the default 1772 to
2048 and kern.maxvnodes from its default 1310 to 2048, so this morning I
doubled them both to 4096.
But, I'm just plucking these numbers from air. Can someone point me in the
general vicinity of a procedure to correctly size these and other
parameters? This is a moderately busy web server, but its load is
increasing.
I saw in the archives that this would be a temporary fix unless I brought
the file usage pigs under control. In our case this morning, the pig was
httpd with over 1200 open files. Stopping and restarting apache dropped
that down to 168, but in the last hour that number had already grown to
324. I'm headed to the apache docs to see if I can figure out how to keep
apache under control, but any pointers there would be greatly appreciated,
too.
Thanks,
Jeff Ross
OpenBSD 3.7-current (GENERIC) #1: Fri Jul 15 17:06:01 MDT 2005
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Xeon(TM) CPU 2.66GHz ("GenuineIntel" 686-class) 2.67 GHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF
LUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID
real mem = 2147000320 (2096680K)
avail mem = 1953148928 (1907372K)
using 4278 buffers containing 107454464 bytes (104936K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 02/04/03, BIOS32 rev. 0 @ 0xf0010
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf2fb0/256 (14 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801CA LPC" rev 0x00)
pcibios0: PCI bus #4 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xc9800/0x800 0xca000/0x1800
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel E7501 MCH Host" rev 0x01
ppb0 at pci0 dev 2 function 0 "Intel E7500 MCH" rev 0x01
pci1 at ppb0 bus 1
"Intel 82870P2 IOxAPIC" rev 0x04 at pci1 dev 28 function 0 not configured
ppb1 at pci1 dev 29 function 0 "Intel 82870P2 PCI-PCI" rev 0x04
pci2 at ppb1 bus 2
em0 at pci2 dev 1 function 0 "Intel PRO/1000MT (82545EM)" rev 0x01: irq 10,
addr
ess: 00:e0:81:28:e9:71
"Intel 82870P2 IOxAPIC" rev 0x04 at pci1 dev 30 function 0 not configured
ppb2 at pci1 dev 31 function 0 "Intel 82870P2 PCI-PCI" rev 0x04
pci3 at ppb2 bus 3
ahc1 at pci3 dev 3 function 0 "Adaptec AHA-29160 U160" rev 0x02: irq 10
scsibus0 at ahc1: 16 targets
st0 at scsibus0 targ 6 lun 0: <SEAGATE, DAT 9SP40-000, 910B> SCSI3
1/sequential
removable
st0: density code 0x26, 512-byte blocks, write-enabled
twe0 at pci3 dev 6 function 0 "3ware Escalade IDE RAID" rev 0x01: irq 10
twe0: Escalade V1.3
scsibus1 at twe0: 16 targets
sd0 at scsibus1 targ 0 lun 0: <3WARE, Host drive #00, > SCSI2 0/direct fixed
sd0: 117799MB, 15017 cyl, 255 head, 63 sec, 512 bytes/sec, 241252672 sec
total
sd1 at scsibus1 targ 2 lun 0: <3WARE, Host drive #02, > SCSI2 0/direct fixed
sd1: 117799MB, 15017 cyl, 255 head, 63 sec, 512 bytes/sec, 241252672 sec
total
uhci0 at pci0 dev 29 function 0 "Intel 82801CA/CAM USB" rev 0x02: irq 10
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1uhub0: 2 ports
with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 82801CA/CAM USB" rev 0x02: irq 9
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2 "Intel 82801CA/CAM USB" rev 0x02: irq 11
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ppb3 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x42
pci4 at ppb3 bus 4
fxp0 at pci4 dev 1 function 0 "Intel 82557" rev 0x10, i82551: irq 5,
address 00:
e0:81:28:e9:70
inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
vga1 at pci4 dev 2 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
fxp1 at pci4 dev 3 function 0 "Intel 82557" rev 0x05, i82558: irq 11,
address 00
:90:27:2a:33:a6
inphy1 at fxp1 phy 1: i82555 10/100 PHY, rev. 0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801CA LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801CA IDE" rev 0x02: DMA,
channel 0 c
onfigured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 1
scsibus2 at atapiscsi0: 2 targets
cd0 at scsibus2 targ 0 lun 0: <_NEC, DVD+RW ND-1100A, 1.A0> SCSI0 5/cdrom
remova
ble
cd0(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 2
"Intel 82801CA/CAM SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at ichpcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
lm0 at isa0 port 0x290/8: W83627HF
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask ef45 netmask ef65 ttymask ffe7
pctr: user-level cycle counter enabled
umass0 at uhub0 port 2 configuration 1 interface 0
umass0: Prolific Technology Inc. Mass Storage Device, rev 2.00/1.00, addr 2
umass0: using SCSI over Bulk-Only
scsibus3 at umass0: 2 targets
sd2 at scsibus3 targ 1 lun 0: <WDC WD20, 00JB-00GVA0, 08.0> SCSI0 0/direct
fixed
sd2: 190782MB, 190782 cyl, 64 head, 32 sec, 512 bytes/sec, 390721969 sec
total
dkcsum: sd0 matched BIOS disk 80
dkcsum: sd1 had no matching BIOS disk
dkcsum: sd2 matched BIOS disk 81
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
# $OpenBSD: sysctl.conf,v 1.35 2005/04/01 04:11:55 deraadt Exp $
#
# This file contains a list of sysctl options the user wants set at
# boot time. See sysctl(3) and sysctl(8) for more information on
# the many available variables.
#
net.inet.ip.forwarding=1 # 1=Permit forwarding (routing) of packets
#net.inet6.ip6.forwarding=1 # 1=Permit forwarding (routing) of packets
#net.inet6.ip6.accept_rtadv=1 # 1=Permit IPv6 autoconf (forwarding must
be 0)
#net.inet.tcp.rfc1323=0 # 0=disable TCP RFC1323 extensions (for if
tcp i
s slow)
#net.inet.tcp.rfc3390=1 # 1=Enable RFC3390 for TCP window increasing
#net.inet.esp.enable=0 # 0=Disable the ESP IPsec protocol
#net.inet.ah.enable=0 # 0=Disable the AH IPsec protocol
#net.inet.esp.udpencap=0 # 0=Disable ESP-in-UDP encapsulation
#net.inet.ipcomp.enable=1 # 1=Enable the IPCOMP protocol
#net.inet.etherip.allow=1 # 1=Enable the Ethernet-over-IP protocol
#net.inet.tcp.ecn=1 # 1=Enable the TCP ECN extension
ddb.panic=0 # 0=Do not drop into ddb on a kernel panic
#ddb.console=1 # 1=Permit entry of ddb from the console
#fs.posix.setuid=0 # 0=Traditional BSD chown() semantics
#vm.swapencrypt.enable=0 # 0=Do not encrypt pages that go to swap
#vfs.nfs.iothreads=4 # number of nfsio kernel threads
#net.inet.ip.mtudisc=0 # 0=disable tcp mtu discovery
#kern.usercrypto=1 # 1=enable userland use of /dev/crypto
#kern.splassert=2 # 2=enable and verbose error messages.
#machdep.allowaperture=2 # See xf86(4)
#machdep.apmwarn=10 # battery % when apm status messages enabled
#machdep.apmhalt=1 # 1=powerdown hack, try if halt -p doesn't
work
#machdep.kbdreset=1 # permit console CTRL-ALT-DEL to do a nice
halt
#machdep.userldt=1 # allow userland programs to play with ldt,
# required by some ports
#kern.emul.aout=1 # enable running dynamic OpenBSD a.out bins
#kern.emul.bsdos=1 # enable running BSD/OS binaries
#kern.emul.freebsd=1 # enable running FreeBSD binaries
#kern.emul.ibcs2=1 # enable running iBCS2 binaries
#kern.emul.linux=1 # enable running Linux binaries
#kern.emul.svr4=1 # enable running SVR4 binaries
# For PostgreSQL Port
#kern.seminfo.semmni=512
#kern.seminfo.semmns=4096
#kern.shminfo.shmall=65536
#kern.shminfo.shmmax=536870912
kern.seminfo.semmni=1024
kern.seminfo.semmns=8192
kern.shminfo.shmall=131072
kern.shminfo.shmmax=1073741824
kern.maxfiles=16384
kern.maxvnodes=16384
