On Wed, 11 Jul 2007, Adam PAPAI wrote:
> Hello,
>
> I have the following problem with the php and the httpd.
> We have a bit-modified kernel:
>
> in /usr/src/sys/arch/i386/conf/GENERIC we changed the
> maxusers 256
>
>
> unaame -a
> OpenBSD arsenic.digitalinfluence.hu 4.1 GENERIC.MP#1 i386
>
>
> The system hangs after 1 day. It's a very strongly loaded system. Any idea
> why? It seems that the system does not really handle the http requests well.
>
> /var/www/log/access_log snippet:
>
> httpd in malloc(): error: recursive call
> httpd in malloc(): error: recursive call
> [Mon Jul 9 18:33:39 2007] [notice] child pid 24755 exit signal Abort (6)
> [Mon Jul 9 18:33:39 2007] [notice] child pid 10372 exit signal Abort (6)
> [Mon Jul 9 18:33:39 2007] [notice] child pid 11192 exit signal Segmentation
> fault (11)
> [Mon Jul 9 18:33:39 2007] [notice] child pid 15994 exit signal Segmentation
> fault (11)
> [Mon Jul 9 18:33:42 2007] [error] [client 84.3.75.29] File does not exist:
> /users/reklamcsere/favicon.ico
> [Mon Jul 9 18:33:53 2007] [error] [client 83.216.56.20] File does not exist:
> /users/reklamcsere/images/px1.gif
The aborts and seg faults are likely caused by php. It's mostly sloppy
programming by the php developers.
Why your system hangs is hard to tell. Apart from a quite high load
avarage I see no obvious cases of running out of resources. vmstat -m
might give a clue. You could be also running out of file descriptors.
Try increasing kern.maxfiles.
-Otto
>
>
> last load:
>
> load averages: 166.08, 190.05, 175.78
> 18:33:49
> 238 processes: 1 running, 236 idle, 1 on processor
> CPU0 states: 8.8% user, 0.0% nice, 6.0% system, 0.0% interrupt, 85.2% idle
> CPU1 states: 0.8% user, 0.0% nice, 1.4% system, 0.0% interrupt, 97.8% idle
> Memory: Real: 213M/511M act/tot Free: 491M Swap: 0K/512M used/tot
>
> PID USERNAME PRI NICE SIZE RES STATE WAIT TIME CPU COMMAND
> 16469 www 2 0 3432K 4724K sleep/0 netio 1:01 1.61% httpd
> 11982 www 2 0 3424K 4724K sleep/0 netio 0:21 1.51% httpd
> 27986 www 2 0 3408K 4672K sleep/0 netio 0:19 1.51% httpd
> 29148 www 2 0 3824K 4952K sleep/0 netio 1:00 1.46% httpd
> 23427 www 2 0 3432K 4724K sleep/0 netio 0:23 1.42% httpd
> 1392 www 2 0 3428K 4876K sleep/0 netio 0:45 1.37% httpd
> 16673 www 2 0 3428K 4756K sleep/0 netio 1:40 1.32% httpd
> 10830 www 2 0 3420K 4724K sleep/1 netio 1:22 1.32% httpd
> 32318 www 2 0 3408K 4616K sleep/0 netio 1:07 1.32% httpd
>
>
> vmstat:
>
> 4 users Load166.08190.05175.78 Mon Jul 9 18:33:49 2007
> memory totals (in KB) PAGING SWAPPING Interrupts
> real virtual free in out in out 773 total
> Active 218444 218444 502752 ops 200 clock
> All 523712 523712 1027036 pages 163 ipi
>
> ahc0
> Proc:r d s w Csw Trp Sys Int Sof Flt 1 forks 201 fxp0
> 3207 479 2141 3093 410 223 1933 fkppw 209 fxp1
> fksvm
> 0.0%Int 3.7%Sys 4.8%Usr 0.0%Nic 91.5%Idle pwait
> | | | | | | | | | | | relck
> ==>> rlkok
> noram
> Namei Sys-cache Proc-cache No-cache 324 ndcpy
> Calls hits % hits % miss % fltcp
> 2047 2047 100 1107 zfod
> 103 cow
> Disks sd0 sd1 cd0 fd0 128 fmin
> seeks 170 ftarg
> xfers 26444 itarg
> Kbyte 13 3 wired
> sec 0.0 pdfre
> pdscn
> pzidle
> 1308 kmapent
>
>
> dmesg:
> OpenBSD 4.1-current (GENERIC.MP) #1: Sun Jul 8 23:42:42 CEST 2007
>
> [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP
> cpu0: Intel Pentium III ("GenuineIntel" 686-class) 1 GHz
> cpu0:
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
> real mem = 1073221632 (1048068K)
> avail mem = 971218944 (948456K)
> using 4278 buffers containing 53784576 bytes (52524K) of memory
> mainbus0 (root)
> bios0 at mainbus0: AT/286+ BIOS, date 05/15/02, BIOS32 rev. 0 @ 0xfd5e1
> pcibios0 at bios0: rev 2.1 @ 0xf0000/0xffff
> pcibios0: PCI BIOS has 7 Interrupt Routing table entries
> pcibios0: PCI Interrupt Router at 000:15:0 ("ServerWorks OSB4" rev 0x00)
> pcibios0: PCI bus #0 is the last bus
> bios0: ROM list: 0xc0000/0xa000 0xca000/0x1800 0xcb800/0x5200
> acpi at mainbus0 not configured
> mainbus0: Intel MP Specification (Version 1.4)
> cpu0 at mainbus0: apid 3 (boot processor)
> cpu0: apic clock running at 132 MHz
> cpu1 at mainbus0: apid 0 (application processor)
> cpu1: Intel Pentium III ("GenuineIntel" 686-class)
> cpu1: FPU,CX8,APIC
> mainbus0: bus 0 is type PCI
> mainbus0: bus 1 is type PCI
> mainbus0: bus 2 is type ISA
> ioapic0 at mainbus0: apid 14 pa 0xfec00000, version 11, 16 pins
> ioapic1 at mainbus0: apid 13 pa 0xfec01000, version 11, 16 pins
> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> pchb0 at pci0 dev 0 function 0 "ServerWorks CNB20LE Host" rev 0x06
> pchb1 at pci0 dev 0 function 1 "ServerWorks CNB20LE Host" rev 0x06
> pci1 at pchb1 bus 1
> ahc0 at pci1 dev 3 function 0 "Adaptec AIC-7892 U160" rev 0x02: apic 13 int 12
> (irq 9)
> scsibus0 at ahc0: 16 targets
> ahc0: target 0 using 8bit transfers
> ahc0: target 0 using asynchronous transfers
> sd0 at scsibus0 targ 0 lun 0: <IBM-ESXS, ST336605LC !#, B247> SCSI3 0/direct
> fixed
> sd0: 34715MB, 29550 cyl, 4 head, 601 sec, 512 bytes/sec, 71096640 sec total
> ahc0: target 1 using 8bit transfers
> ahc0: target 1 using asynchronous transfers
> sd1 at scsibus0 targ 1 lun 0: <IBM-PSG, ST39175LC !#, 0430> SCSI2 0/direct
> fixed
> sd1: 8678MB, 11721 cyl, 5 head, 303 sec, 512 bytes/sec, 17774160 sec total
> safte0 at scsibus0 targ 8 lun 0: <IBM, FTlV1 S2, 0> SCSI2 3/processor fixed
> vga1 at pci0 dev 1 function 0 "S3 Savage 4" rev 0x04
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> fxp0 at pci0 dev 2 function 0 "Intel 8255x" rev 0x08, i82559: apic 13 int 11
> (irq 10), address 00:02:55:54:52:8e
> inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
> fxp1 at pci0 dev 10 function 0 "Intel 8255x" rev 0x08, i82559: apic 13 int 9
> (irq 10), address 00:02:55:54:52:8f
> inphy1 at fxp1 phy 1: i82555 10/100 PHY, rev. 4
> piixpm0 at pci0 dev 15 function 0 "ServerWorks OSB4" rev 0x50: SMBus disabled
> pciide0 at pci0 dev 15 function 1 "ServerWorks OSB4 IDE" rev 0x00: DMA
> atapiscsi0 at pciide0 channel 0 drive 0
> scsibus1 at atapiscsi0: 2 targets
> cd0 at scsibus1 targ 0 lun 0: <TEAC, CD-224E, 2.7B> SCSI0 5/cdrom removable
> cd0(pciide0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
> ohci0 at pci0 dev 15 function 2 "ServerWorks OSB4/CSB5 USB" rev 0x04: apic 14
> int 7 (irq 7), version 1.0, legacy support
> usb0 at ohci0: USB revision 1.0
> uhub0 at usb0
> uhub0: ServerWorks OHCI root hub, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> isa0 at mainbus0
> 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
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> pccom2 at isa0 port 0x3e8/8 irq 5: 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
> pctr: 686-class user-level performance counters enabled
> mtrr: Pentium Pro MTRR support
> ahc0: target 0 using 16bit transfers
> ahc0: target 0 synchronous at 80.0MHz DT, offset = 0x3f
> dkcsum: sd0 matches BIOS drive 0x80
> ahc0: target 1 using 16bit transfers
> ahc0: target 1 synchronous at 40.0MHz, offset = 0xf
> dkcsum: sd1 matches BIOS drive 0x81
> root on sd0a
> rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
> WARNING: / was not properly unmounted
> arp: attempt to add entry for 10.5.5.5 on fxp0 by 00:03:ba:11:db:58 on fxp1
> arsenic[4.1][wooh]>
>
> Thanks in advance
>
>
>
> --
> Adam PAPAI
> D i g i t a l Influence
> http://www.digitalinfluence.hu
> E-mail: [EMAIL PROTECTED]
> Phone: +36 30 33-55-735 (Hungary)
