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тАО09-27-2010 07:38 AM
тАО09-27-2010 07:38 AM
Two app servers, one with more "system" memory utilization
Is there any way to tell why (or what) one of the blades is using so much more "system" memory than the other?
One theory I have is that since one of the nodes is a veritas CFS "master" that that is cause, but I can't think of a way to prove or see that that is true.
Any ideas?
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тАО09-27-2010 09:20 AM
тАО09-27-2010 09:20 AM
Re: Two app servers, one with more "system" memory utilization
use #kctune -s to list the kernel parameters
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тАО09-27-2010 09:29 AM
тАО09-27-2010 09:29 AM
Re: Two app servers, one with more "system" memory utilization
#prompt># for i in 1 3 5 7 ; do
> ssh its-ps${i} "hostname; kctune -S; echo"
> done
its-ps1
Tunable Value Expression Changes
max_thread_proc 1200 1200 Immed
maxfiles 4096 4096
maxfiles_lim 4096 4096 Immed
maxssiz 67108864 67108864 Immed
maxuprc 3000 3000 Immed
msgmap 2048 2048
msgmax 131072 131072 Immed
msgmnb 131072 131072 Immed
msgmni 1024 1024
msgseg 32767 32767
msgtql 2050 2050
nproc 8196 8196 Immed
nstrpty 60 60
semmni 2048 2048
semmns 8192 8192
semmnu 8192 8192
swchunk 2560 2560
its-ps3
Tunable Value Expression Changes
max_thread_proc 1200 1200 Immed
maxfiles 4096 4096
maxfiles_lim 4096 4096 Immed
maxssiz 67108864 67108864 Immed
maxuprc 3000 3000 Immed
msgmap 2048 2048
msgmax 131072 131072 Immed
msgmnb 131072 131072 Immed
msgmni 1024 1024
msgseg 32767 32767
msgtql 2050 2050
nproc 8196 8196 Immed
nstrpty 60 60
semmns 8192 8192
semmnu 8192 8192
swchunk 2560 2560
its-ps5
Tunable Value Expression Changes
max_thread_proc 1200 1200 Immed
maxfiles 4096 4096
maxfiles_lim 4096 4096 Immed
maxssiz 67108864 67108864 Immed
maxuprc 3000 3000 Immed
msgmap 2048 2048
msgmax 131072 131072 Immed
msgmnb 131072 131072 Immed
msgmni 1024 1024
msgseg 32767 32767
msgtql 2050 2050
nproc 8196 8196 Immed
nstrpty 60 60
semmns 8192 8192
semmnu 8192 8192
swchunk 2560 2560
its-ps7
Tunable Value Expression Changes
max_thread_proc 1200 1200 Immed
maxfiles 4096 4096
maxfiles_lim 4096 4096 Immed
maxssiz 67108864 67108864 Immed
maxuprc 3000 3000 Immed
msgmap 2048 2048
msgmax 131072 131072 Immed
msgmnb 131072 131072 Immed
msgmni 1024 1024
msgseg 32767 32767
msgtql 2050 2050
nproc 8196 8196 Immed
nstrpty 60 60
semmns 8192 8192
semmnu 8192 8192
swchunk 2560 2560
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тАО09-27-2010 09:32 AM
тАО09-27-2010 09:32 AM
Re: Two app servers, one with more "system" memory utilization
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тАО09-27-2010 11:10 AM
тАО09-27-2010 11:10 AM
Re: Two app servers, one with more "system" memory utilization
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тАО09-27-2010 11:13 AM
тАО09-27-2010 11:13 AM
Re: Two app servers, one with more "system" memory utilization
its-ps1
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 40960 4160 36800 10% 0 - 1 /dev/vg00/lvol2
reserve - 36800 -36800
memory 49122 13000 36122 26%
total 90082 53960 36122 60% - 0 -
its-ps3
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 40960 995 39965 2% 0 - 1 /dev/vg00/lvol2
reserve - 32898 -32898
memory 49122 9797 39325 20%
total 90082 43690 46392 49% - 0 -
its-ps5
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 40960 84 40876 0% 0 - 1 /dev/vg00/lvol2
reserve - 40876 -40876
memory 49122 9483 39639 19%
total 90082 50443 39639 56% - 0 -
its-ps7
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 40960 0 40960 0% 0 - 1 /dev/vg00/lvol2
reserve - 40960 -40960
memory 49122 9141 39981 19%
total 90082 50101 39981 56% - 0 -
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тАО09-27-2010 11:14 AM
тАО09-27-2010 11:14 AM
Re: Two app servers, one with more "system" memory utilization
Its-ps1: (CFS Master)
Total VM : 85.0gb Sys Mem : 8.8gb User Mem: 35.2gb Phys Mem: 48.0gb
Active VM: 84.6gb Buf Cache: 3.6gb Free Mem: 453mb
Its-ps3:
Total VM : 87.7gb Sys Mem : 5.4gb User Mem: 39.4gb Phys Mem: 48.0gb
Active VM: 87.1gb Buf Cache: 2.5gb Free Mem: 655mb
Its-ps5:
Total VM : 87.1gb Sys Mem : 6.1gb User Mem: 38.3gb Phys Mem: 48.0gb
Active VM: 86.1gb Buf Cache: 2.6gb Free Mem: 971mb
Its-ps7:
Total VM : 87.8gb Sys Mem : 5.3gb User Mem: 39.2gb Phys Mem: 48.0gb
Active VM: 87.2gb Buf Cache: 2.5gb Free Mem: 977mb
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тАО09-27-2010 11:25 AM
тАО09-27-2010 11:25 AM
Re: Two app servers, one with more "system" memory utilization
kctune | cut -c1-36 > /tmp/$(hostname)_kctune
on each machine. Then run diff on one compared to the machine that is 'normal'.
Bill Hassell, sysadmin
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тАО09-28-2010 06:45 AM
тАО09-28-2010 06:45 AM
Re: Two app servers, one with more "system" memory utilization
# for i in 1 3 5 7 ; do ssh its-ps${i} "kctune | cut -c1-36" > /tmp/its-ps${i}_kctune; done
# wc -l /tmp/its-ps1_kctune
196 /tmp/its-ps1_kctune
# wc -l /tmp/its-ps3_kctune
196 /tmp/its-ps3_kctune
# diff /tmp/its-ps1_kctune /tmp/its-ps3_kctune
# diff /tmp/its-ps1_kctune /tmp/its-ps5_kctune
# diff /tmp/its-ps1_kctune /tmp/its-ps7_kctune
# head -5 /tmp/its-ps1_kctune
Tunable Val
NSTREVENT
NSTRPUSH
NSTRSCHED
STRCTLSZ 10
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тАО09-28-2010 06:49 AM
тАО09-28-2010 06:49 AM
Re: Two app servers, one with more "system" memory utilization
# egrep -i ninode /tmp/its-ps1_kctune
ninode 48
vx_ninode