 | | | Subject: Having problems starting ~10k worker threads in apache | Subject: Having problems starting ~10k worker threads in apache 2007-09-18 - By Ijaaz A. Ullah
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I'm trying to create an instance of apache that spawns ~10k worker
threads. Due to design requirements, I can only use RHEL3 for this
application.
Here is the contents of my <IfModule worker.c>
<IfModule worker.c>
ThreadLimit 400
ServerLimit 32
StartServers 32
MaxClients 12800
MinSpareThreads 12600
MaxSpareThreads 12800
ThreadsPerChild 400
MaxRequestsPerChild 0
</IfModule>
No matter what combination I use, I can not go higher than about 7k.
Anything past that gives me these errors:
[Tue Sep 18 15:07:36 2007] [alert] (12)Cannot allocate memory:
apr_thread_create: unable to create worker thread
[Tue Sep 18 15:07:37 2007] [alert] (12)Cannot allocate memory:
apr_thread_create: unable to create worker thread
Any help would be appreciated.
cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 8396238848 381644800 8014594048 0 87056384 174280704
Swap: 1077501952 0 1077501952
MemTotal: 8199452 kB
MemFree: 7826752 kB
MemShared: 0 kB
Buffers: 85016 kB
Cached: 170196 kB
SwapCached: 0 kB
Active: 157652 kB
ActiveAnon: 7468 kB
ActiveCache: 150184 kB
Inact_dirty: 80616 kB
Inact_laundry: 24412 kB
Inact_clean: 0 kB
Inact_target: 52536 kB
HighTotal: 7470752 kB
HighFree: 7281052 kB
LowTotal: 728700 kB
LowFree: 545700 kB
SwapTotal: 1052248 kB
SwapFree: 1052248 kB
CommitLimit: 5151972 kB
Committed_AS: 13196 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
runqueue : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4639.94
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
runqueue : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
runqueue : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
runqueue : 3
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 4
cpu cores : 4
runqueue : 4
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 5
cpu cores : 4
runqueue : 5
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 6
cpu cores : 4
runqueue : 6
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
cpu MHz : 2327.561
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 7
cpu cores : 4
runqueue : 7
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm
bogomips : 4653.05
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