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Re: I don't get where the load comes from
by jcarnat
::
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Le 31 mai 2011 ` 02:19, Gonzalo L. R. a icrit :
> Take a look of this
>
> http://undeadly.org/cgi?action=article&sid=20090715034920
I found this article before posting.
But one thing that didn't convinced me is that, if I shutdown apmd and
configure hw.setperf=100, the load drops down to 0.30-0.20.
I don't get how "A high load is just that: high. It means you have a lot
of processes that sometimes run." can show load variation depending on
CPU speed only.
>
> El 05/30/11 18:44, Joel Carnat escribis:
>> Hi,
>>
>> I am running a personal Mail+Web system on a Core2Duo 2GHz using
Speedstep.
>> It is mostly doing nothing but still has a high load average.
>>
>> I've check various stat tools but didn't find the reason for the load.
>>
>> Anyone has ideas?
>>
>> TIA,
>> Jo
>>
>> PS: here are some of the results I checked.
>>
>> # uname -a
>> OpenBSD bagheera.tumfatig.net 4.9 GENERIC.MP#819 amd64
>>
>> # sysctl hw
>> hw.machine=amd64
>> hw.model=Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
>> hw.ncpu=2
>> hw.byteorder=1234
>> hw.pagesize=4096
>> hw.disknames=cd0:,sd0:01d3664288919ae7
>> hw.diskcount=2
>> hw.sensors.cpu0.temp0=45.00 degC
>> hw.sensors.cpu1.temp0=45.00 degC
>> hw.sensors.acpitz0.temp0=45.50 degC (zone temperature)
>> hw.sensors.acpiac0.indicator0=On (power supply)
>> hw.sensors.acpibat0.volt0=11.10 VDC (voltage)
>> hw.sensors.acpibat0.volt1=12.71 VDC (current voltage)
>> hw.sensors.acpibat0.amphour0=4.61 Ah (last full capacity)
>> hw.sensors.acpibat0.amphour1=0.52 Ah (warning capacity)
>> hw.sensors.acpibat0.amphour2=0.16 Ah (low capacity)
>> hw.sensors.acpibat0.amphour3=5.20 Ah (remaining capacity), OK
>> hw.sensors.acpibat0.raw0=0 (battery full), OK
>> hw.sensors.acpibat0.raw1=1 (rate)
>> hw.cpuspeed=800
>> hw.setperf=0
>> hw.vendor=Dell Inc.
>> hw.product=XPS M1330
>> hw.serialno=CK0W33J
>> hw.uuid=44454c4c-4b00-1030-8057-c3c04f33334a
>> hw.physmem=3747008512
>> hw.usermem=3734933504
>> hw.ncpufound=2
>>
>> # top -n -o cpu -T
>> load averages: 1.19, 1.14, 0.99 bagheera.tumfatig.net 23:39:09
>> 78 processes: 77 idle, 1 on processor
>> CPU0 states: 1.8% user, 0.0% nice, 0.7% system, 0.1% interrupt, 97.4%
>> idle
>> CPU1 states: 2.4% user, 0.0% nice, 0.8% system, 0.0% interrupt, 96.8%
>> idle
>> Memory: Real: 238M/656M act/tot Free: 2809M Swap: 0K/8197M used/tot
>>
>> PID USERNAME PRI NICE SIZE RES STATE WAIT TIME CPUCOMMAND
>> 3230 root 2 0 2156K 3152K sleep/1 netio 0:00 0.20% sshd
>> 1867 sshd 2 0 2148K 2368K sleep/0 select 0:00 0.05% sshd
>> 19650 www 14 0 5640K 30M sleep/0 semwait 0:59 0.00% httpd
>> 4225 www 14 0 5984K 42M sleep/1 semwait 0:58 0.00% httpd
>> 3624 www 14 0 5644K 30M sleep/1 semwait 0:53 0.00% httpd
>> 24875 www 14 0 5740K 32M sleep/1 semwait 0:52 0.00% httpd
>> 22848 www 14 0 5724K 30M sleep/1 semwait 0:50 0.00% httpd
>> 13508 www 14 0 5832K 31M sleep/1 semwait 0:48 0.00% httpd
>> 24210 www 14 0 5652K 30M sleep/1 semwait 0:48 0.00% httpd
>> 510 www 14 0 5660K 30M sleep/1 semwait 0:46 0.00% httpd
>> 20258 www 2 0 5536K 32M sleep/0 select 0:46 0.00% httpd
>> 6543 www 14 0 5772K 32M sleep/0 semwait 0:43 0.00% httpd
>> 9783 _mysql 2 0 55M 30M sleep/1 poll 0:20 0.00% mysqld
>> 19071 root 2 0 640K 1416K sleep/1 select 0:09 0.00% sshd
>> 10389 root 2 0 3376K 2824K sleep/0 poll 0:07 0.00% monit
>> 21695 _sogo 2 0 7288K 18M sleep/1 poll 0:05 0.00% sogod
>> 1888 named 2 0 20M 21M sleep/1 select 0:05 0.00% named
>> 18781 _sogo 2 0 15M 29M sleep/1 poll 0:04 0.00% sogod
>>
>> # iostat -c 10 -w 1
>> tty cd0 sd0 cpu
>> tin tout KB/t t/s MB/s KB/t t/s MB/s us ni sy in id
>> 0 7 0.00 0 0.00 20.64 7 0.14 2 0 1 0 97
>> 0 174 0.00 0 0.00 0.00 0 0.00 0 0 0 0100
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 2 0 97
>> 0 57 0.00 0 0.00 32.00 17 0.53 1 0 1 0 98
>> 0 58 0.00 0 0.00 0.00 0 0.00 7 0 7 0 86
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 1 0 98
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 1 0 98
>> 0 57 0.00 0 0.00 0.00 0 0.00 2 0 0 0 98
>> 0 57 0.00 0 0.00 4.00 1 0.00 0 0 1 0 99
>> 0 58 0.00 0 0.00 0.00 0 0.00 1 0 0 1 98
>>
>> # vmstat -c 10 -w 1
>> procs memory page disks traps cpu
>> r b w avm fre flt re pi po fr sr cd0 sd0 int sys cs ussy
>> id
>> 1 1 0 243420 2866736 655 0 0 0 0 0 0 1 15 1828 77 2
1
>> 97
>> 0 1 0 243636 2866336 234 0 0 0 0 0 0 0 10 540 47 0
1
>> 99
>> 0 1 0 243668 2866304 95 0 0 0 0 0 0 0 17 329 44 1
0
>> 99
>> 0 1 0 242848 2867552 644 0 0 0 0 0 0 0 8 1445 115 1
1
>> 98
>> 0 1 0 243612 2866352 1076 0 0 0 0 0 0 0 9 2436 44 0
2
>> 98
>> 0 1 0 243668 2866288 117 0 0 0 0 0 0 0 7 369 46 1
1
>> 98
>> 0 1 0 243836 2866112 337 0 0 0 0 0 0 0 7 818 86 0
1
>> 99
>> 0 1 0 243428 2866728 1216 0 0 0 0 0 0 0 11 2920 69 1
2
>> 97
>> 0 1 0 243640 2866332 212 0 0 0 0 0 0 0 6 313 38 1
0
>> 99
>> 0 1 0 243684 2866284 96 0 0 0 0 0 0 0 8 334 48 1
0
>> 99
>>
>
> --
> Sending from my Computer.
> Take a look of this
>
> http://undeadly.org/cgi?action=article&sid=20090715034920
I found this article before posting.
But one thing that didn't convinced me is that, if I shutdown apmd and
configure hw.setperf=100, the load drops down to 0.30-0.20.
I don't get how "A high load is just that: high. It means you have a lot
of processes that sometimes run." can show load variation depending on
CPU speed only.
>
> El 05/30/11 18:44, Joel Carnat escribis:
>> Hi,
>>
>> I am running a personal Mail+Web system on a Core2Duo 2GHz using
Speedstep.
>> It is mostly doing nothing but still has a high load average.
>>
>> I've check various stat tools but didn't find the reason for the load.
>>
>> Anyone has ideas?
>>
>> TIA,
>> Jo
>>
>> PS: here are some of the results I checked.
>>
>> # uname -a
>> OpenBSD bagheera.tumfatig.net 4.9 GENERIC.MP#819 amd64
>>
>> # sysctl hw
>> hw.machine=amd64
>> hw.model=Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
>> hw.ncpu=2
>> hw.byteorder=1234
>> hw.pagesize=4096
>> hw.disknames=cd0:,sd0:01d3664288919ae7
>> hw.diskcount=2
>> hw.sensors.cpu0.temp0=45.00 degC
>> hw.sensors.cpu1.temp0=45.00 degC
>> hw.sensors.acpitz0.temp0=45.50 degC (zone temperature)
>> hw.sensors.acpiac0.indicator0=On (power supply)
>> hw.sensors.acpibat0.volt0=11.10 VDC (voltage)
>> hw.sensors.acpibat0.volt1=12.71 VDC (current voltage)
>> hw.sensors.acpibat0.amphour0=4.61 Ah (last full capacity)
>> hw.sensors.acpibat0.amphour1=0.52 Ah (warning capacity)
>> hw.sensors.acpibat0.amphour2=0.16 Ah (low capacity)
>> hw.sensors.acpibat0.amphour3=5.20 Ah (remaining capacity), OK
>> hw.sensors.acpibat0.raw0=0 (battery full), OK
>> hw.sensors.acpibat0.raw1=1 (rate)
>> hw.cpuspeed=800
>> hw.setperf=0
>> hw.vendor=Dell Inc.
>> hw.product=XPS M1330
>> hw.serialno=CK0W33J
>> hw.uuid=44454c4c-4b00-1030-8057-c3c04f33334a
>> hw.physmem=3747008512
>> hw.usermem=3734933504
>> hw.ncpufound=2
>>
>> # top -n -o cpu -T
>> load averages: 1.19, 1.14, 0.99 bagheera.tumfatig.net 23:39:09
>> 78 processes: 77 idle, 1 on processor
>> CPU0 states: 1.8% user, 0.0% nice, 0.7% system, 0.1% interrupt, 97.4%
>> idle
>> CPU1 states: 2.4% user, 0.0% nice, 0.8% system, 0.0% interrupt, 96.8%
>> idle
>> Memory: Real: 238M/656M act/tot Free: 2809M Swap: 0K/8197M used/tot
>>
>> PID USERNAME PRI NICE SIZE RES STATE WAIT TIME CPU
>> 3230 root 2 0 2156K 3152K sleep/1 netio 0:00 0.20% sshd
>> 1867 sshd 2 0 2148K 2368K sleep/0 select 0:00 0.05% sshd
>> 19650 www 14 0 5640K 30M sleep/0 semwait 0:59 0.00% httpd
>> 4225 www 14 0 5984K 42M sleep/1 semwait 0:58 0.00% httpd
>> 3624 www 14 0 5644K 30M sleep/1 semwait 0:53 0.00% httpd
>> 24875 www 14 0 5740K 32M sleep/1 semwait 0:52 0.00% httpd
>> 22848 www 14 0 5724K 30M sleep/1 semwait 0:50 0.00% httpd
>> 13508 www 14 0 5832K 31M sleep/1 semwait 0:48 0.00% httpd
>> 24210 www 14 0 5652K 30M sleep/1 semwait 0:48 0.00% httpd
>> 510 www 14 0 5660K 30M sleep/1 semwait 0:46 0.00% httpd
>> 20258 www 2 0 5536K 32M sleep/0 select 0:46 0.00% httpd
>> 6543 www 14 0 5772K 32M sleep/0 semwait 0:43 0.00% httpd
>> 9783 _mysql 2 0 55M 30M sleep/1 poll 0:20 0.00% mysqld
>> 19071 root 2 0 640K 1416K sleep/1 select 0:09 0.00% sshd
>> 10389 root 2 0 3376K 2824K sleep/0 poll 0:07 0.00% monit
>> 21695 _sogo 2 0 7288K 18M sleep/1 poll 0:05 0.00% sogod
>> 1888 named 2 0 20M 21M sleep/1 select 0:05 0.00% named
>> 18781 _sogo 2 0 15M 29M sleep/1 poll 0:04 0.00% sogod
>>
>> # iostat -c 10 -w 1
>> tty cd0 sd0 cpu
>> tin tout KB/t t/s MB/s KB/t t/s MB/s us ni sy in id
>> 0 7 0.00 0 0.00 20.64 7 0.14 2 0 1 0 97
>> 0 174 0.00 0 0.00 0.00 0 0.00 0 0 0 0100
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 2 0 97
>> 0 57 0.00 0 0.00 32.00 17 0.53 1 0 1 0 98
>> 0 58 0.00 0 0.00 0.00 0 0.00 7 0 7 0 86
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 1 0 98
>> 0 57 0.00 0 0.00 0.00 0 0.00 1 0 1 0 98
>> 0 57 0.00 0 0.00 0.00 0 0.00 2 0 0 0 98
>> 0 57 0.00 0 0.00 4.00 1 0.00 0 0 1 0 99
>> 0 58 0.00 0 0.00 0.00 0 0.00 1 0 0 1 98
>>
>> # vmstat -c 10 -w 1
>> procs memory page disks traps cpu
>> r b w avm fre flt re pi po fr sr cd0 sd0 int sys cs us
>> id
>> 1 1 0 243420 2866736 655 0 0 0 0 0 0 1 15 1828 77 2
1
>> 97
>> 0 1 0 243636 2866336 234 0 0 0 0 0 0 0 10 540 47 0
1
>> 99
>> 0 1 0 243668 2866304 95 0 0 0 0 0 0 0 17 329 44 1
0
>> 99
>> 0 1 0 242848 2867552 644 0 0 0 0 0 0 0 8 1445 115 1
1
>> 98
>> 0 1 0 243612 2866352 1076 0 0 0 0 0 0 0 9 2436 44 0
2
>> 98
>> 0 1 0 243668 2866288 117 0 0 0 0 0 0 0 7 369 46 1
1
>> 98
>> 0 1 0 243836 2866112 337 0 0 0 0 0 0 0 7 818 86 0
1
>> 99
>> 0 1 0 243428 2866728 1216 0 0 0 0 0 0 0 11 2920 69 1
2
>> 97
>> 0 1 0 243640 2866332 212 0 0 0 0 0 0 0 6 313 38 1
0
>> 99
>> 0 1 0 243684 2866284 96 0 0 0 0 0 0 0 8 334 48 1
0
>> 99
>>
>
> --
> Sending from my Computer.
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