quoted text > On Thu, May 15, 2008 at 2:00 PM, Darrian Hale <djh@rgnets.com> wrote:
>> What output to you get from 'netstat -m'?
>
> 2867 mbufs in use:
> 2566 mbufs allocated to data
> 274 mbufs allocated to packet headers
> 27 mbufs allocated to socket names and addresses
> 1129/5450/6144 mbuf clusters in use (current/peak/max)
> 13028 Kbytes allocated to network (22% in use)
> 0 requests for memory denied
> 0 requests for memory delayed
> 0 calls to protocol drain routines
>
>
>
>> I might get yelled at for this as you mentioned people seem to hate
>> custom kernels.
>>
>> But i've had good luck with the following options, I'm not sure which
>> are still relevant, but they help.
>>
>> option NKMEMPAGES_MAX=81920
>> option NKMEMPAGES=81920
>> option MAX_KMAPENT=8192
>>
>> I've always received that error you described on any high load openbsd
>> box. Even with the above changes,
>> you will eventually get the same error as your new limits are reached.
>>
>> If you come up with any better solutions, please let me know, i'd be
>> very interested to hear them.
>>
>> -Darrian
>>
>> On Thu, May 15, 2008 at 10:29 AM, Kevin <spytag@gmail.com> wrote:
>>> All,
>>>
>>> I'm getting quite a lot of these errors in /var/log/messages and can't
>>> seem to find an appropriate fix in the archives:
>>>
>>> May 14 21:05:54 svr02 /bsd: uvm_mapent_alloc: out of static map entries
>>> May 14 21:57:47 svr02 /bsd: uvm_mapent_alloc: out of static map entries
>>> May 14 23:00:05 svr02 /bsd: uvm_mapent_alloc: out of static map entries
>>> May 15 07:27:53 svr02 /bsd: uvm_mapent_alloc: out of static map entries
>>> May 15 07:39:59 svr02 /bsd: uvm_mapent_alloc: out of static map entries
>>>
>>> N.B. This machine serves mirror content for various F/OSS projects in
>>> addition to standard www content, so it quite often has >350 users
>>> concurrently connected downloading mirrored content (in addition to
>>> visitors who're actually visiting the site).
>>>
>>>
>>> These messages correspond almost exactly with two things:
>>>
>>> 1.) the sites having quite a few visitors
>>> 2.) the sites becoming unavailable. In most cases, it fixes itself
>>> when the freeloaders (errr downloaders ;-) complete their file
>>> transfers.
>>>
>>>
>>> Possibly worth noting:
>>>
>>> 1.) We've had to crank various settings in Apache to keep serving
>>> traffic, as the stock settings were too low: we were reaching the max
>>> daemons for Apache so new visitors were just out-of-luck.
>>> 2.) When the system begins to knuckle under load, I'm taking a
>>> snapshot of various bits like the following.
>>>
>>> Here's one example:
>>> load averages: 0.45, 0.47, 0.40 07:40:00
>>> 247 processes: 245 idle, 2 on processor
>>> CPU0 states: 7.2% user, 0.0% nice, 2.6% system, 2.2% interrupt, 88.0% idle
>>> CPU1 states: 3.6% user, 0.0% nice, 0.3% system, 1.9% interrupt, 94.3% idle
>>> Memory: Real: 339M/737M act/tot Free: 1272M Swap: 0K/518M used/tot
>>>
>>>
>>> From the archives this seems to be something for which a fix *used* to
>>> be cranking up the following:
>>>
>>> maxusers 64
>>> option BUFCACHEPERCENT=25
>>> option MULTIPROCESSOR
>>> option MAX_KMAPENT=4000
>>>
>>>
>>> This hardly seems a real fix though--especially given everyone's
>>> hatred of knobs, custom kernels, and such though I'm certainly open to
>>> it if we can continue to keep the sites--and the mirrors--up.
>>>
>>> I think I've mentioned everything noteworthy though cluestick
>>> applications are welcome.
>>>
>>> Thanks,
>>> Kevin
>>>
>>>
>>>
>>>
>>> Here's the dmesg for any interested parties:
>>>
>>>
>>> OpenBSD 4.3 (GENERIC.MP) #2: Fri Apr 11 09:00:02 PDT 2008
>>> kevin@svr02:/usr/src/sys/arch/i386/compile/GENERIC.MP
>>> cpu0: Intel(R) Pentium(R) III CPU family 1266MHz ("GenuineIntel"
>>> 686-class) 1.27 GHz
>>> cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
>>> real mem = 2146992128 (2047MB)
>>> avail mem = 2067959808 (1972MB)
>>> mainbus0 at root
>>> bios0 at mainbus0: AT/286+ BIOS, date 01/25/02, BIOS32 rev. 0 @
>>> 0xffe90, SMBIOS rev. 2.3 @ 0xfae20 (49 entries)
>>> bios0: vendor Dell Computer Corporation version "A06" date 01/25/2002
>>> bios0: Dell Computer Corporation PowerEdge 2550
>>> acpi0 at bios0: rev 0
>>> acpi0: tables DSDT FACP APIC SPCR
>>> acpi0: wakeup devices PCI1(S5) PCI2(S5) PCI0(S5)
>>> acpitimer0 at acpi0: 3579545 Hz, 32 bits
>>> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
>>> cpu0 at mainbus0: apid 1 (boot processor)
>>> cpu0: apic clock running at 132MHz
>>> cpu1 at mainbus0: apid 0 (application processor)
>>> cpu1: Intel(R) Pentium(R) III CPU family 1266MHz ("GenuineIntel"
>>> 686-class) 1.27 GHz
>>> cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
>>> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 16 pins
>>> ioapic0: misconfigured as apic 0, remapped to apid 2
>>> ioapic1 at mainbus0: apid 3 pa 0xfec01000, version 11, 16 pins
>>> ioapic1: misconfigured as apic 0, remapped to apid 3
>>> acpiprt0 at acpi0: bus 0 (PCI1)
>>> acpiprt1 at acpi0: bus 1 (PCI2)
>>> acpiprt2 at acpi0: bus 2 (PCI0)
>>> acpiprt3 at acpi0: bus 3 (I960)
>>> acpicpu0 at acpi0
>>> acpicpu1 at acpi0
>>> bios0: ROM list: 0xc0000/0x8000 0xcc000/0x8000 0xec000/0x4000!
>>> esm0 at mainbus0
>>> esm0: PowerEdge 2550 Embedded Server Management 5.50
>>> esm0: Primary System Backplane 1.30
>>> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
>>> pchb0 at pci0 dev 0 function 0 "ServerWorks CNB20HE Host" rev 0x23
>>> pchb1 at pci0 dev 0 function 1 "ServerWorks CNB20HE Host" rev 0x01
>>> pci1 at pchb1 bus 2
>>> ppb0 at pci1 dev 2 function 0 "Intel i960 RM PCI-PCI" rev 0x02
>>> pci2 at ppb0 bus 3
>>> ahc0 at pci2 dev 4 function 0 "Adaptec AIC-7899 U160" rev 0x01: apic 3
>>> int 15 (irq 11)
>>> scsibus0 at ahc0: 16 targets
>>> ahc1 at pci2 dev 4 function 1 "Adaptec AIC-7899 U160" rev 0x01: apic 3
>>> int 14 (irq 10)
>>> scsibus1 at ahc1: 16 targets
>>> fxp0 at pci1 dev 4 function 0 "Intel 8255x" rev 0x08, i82559: apic 3
>>> int 0 (irq 5), address 00:06:5b:3b:61:27
>>> inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
>>> pchb2 at pci0 dev 0 function 2 "ServerWorks CNB20HE Host" rev 0x01
>>> pchb3 at pci0 dev 0 function 3 "ServerWorks CNB20HE Host" rev 0x01
>>> pci3 at pchb3 bus 1
>>> bge0 at pci3 dev 8 function 0 "Broadcom BCM5700" rev 0x12, BCM5700 B2
>>> (0x7102): apic 3 int 1 (irq 10), address 00:06:5b:3b:61:28
>>> brgphy0 at bge0 phy 1: BCM5401 10/100/1000baseT PHY, rev. 3
>>> gdt0 at pci0 dev 4 function 0 "Vortex GDT6x18RD" rev 0x00: apic 3 int
>>> 6 (irq 11) dpmem c8000 2-bus 2 cache devices
>>> gdt0: ver 11a, cache on, strategy 2, writeback on, blksz 32
>>> gdt0: raw feat 1 cache feat 101
>>> scsibus2 at gdt0: 35 targets
>>> sd0 at scsibus2 targ 0 lun 0: <ICP, Host drive #00, > SCSI2 0/direct fixed
>>> sd0: 35000MB, 4462 cyl, 255 head, 63 sec, 512 bytes/sec, 71682030 sec total
>>> sd1 at scsibus2 targ 1 lun 0: <ICP, Host drive #01, > SCSI2 0/direct fixed
>>> sd1: 140200MB, 17873 cyl, 255 head, 63 sec, 512 bytes/sec, 287129745 sec total
>>> scsibus3 at gdt0: 16 targets
>>> scsibus4 at gdt0: 16 targets
>>> vga1 at pci0 dev 14 function 0 "ATI Rage XL" rev 0x27
>>> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
>>> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
>>> 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
>>> scsibus5 at atapiscsi0: 2 targets
>>> cd0 at scsibus5 targ 0 lun 0: <TEAC, CD-224E, 3.7D> SCSI0 5/cdrom removable
>>> cd0(pciide0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
>>> 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
>>> lpt0 at isa0 port 0x378/4 irq 7
>>> npx0 at isa0 port 0xf0/16: reported by CPUID; 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
>>> mtrr: Pentium Pro MTRR support
>>> softraid0 at root
>>> root on sd0a swap on sd0b dump on sd0b
