proc full

[madhudeepan]

when i checked dmesg and syslog ,, it shows proc was full

i used this command

sar -v 2 20

output for this
23:49:16 text-sz ov proc-sz ov inod-sz ov file-sz ov
23:49:18 N/A N/A 971/4200 0 12015/35648 0 14526/2147483647 0
23:49:20 N/A N/A 971/4200 0 12015/35648 0 14526/2147483647 0
23:49:22 N/A N/A 971/4200 0 12017/35648 0 14529/2147483647 0
23:49:24 N/A N/A 972/4200 0 12028/35648 0 14544/2147483647 0
23:49:26 N/A N/A 972/4200 0 12028/35648 0 14544/2147483647 0
23:49:28 N/A N/A 972/4200 0 12030/35648 0 14546/2147483647 0
23:49:30 N/A N/A 972/4200 0 12031/35648 0 14547/2147483647 0
23:49:32 N/A N/A 973/4200 0 12025/35648 0 14541/2147483647 0
23:49:34 N/A N/A 972/4200 0 12033/35648 0 14548/2147483647 0
23:49:36 N/A N/A 974/4200 0 12037/35648 0 14556/2147483647 0
23:49:38 N/A N/A 975/4200 0 12031/35648 0 14546/2147483647 0
23:49:40 N/A N/A 968/4200 0 12024/35648 0 14531/2147483647 0
23:49:42 N/A N/A 968/4200 0 12023/35648 0 14527/2147483647 0
23:49:44 N/A N/A 971/4200 0 12033/35648 0 14542/2147483647 0
23:49:46 N/A N/A 971/4200 0 12034/35648 0 14540/2147483647 0
23:49:48 N/A N/A 971/4200 0 12036/35648 0 14542/2147483647 0
23:49:50 N/A N/A 971/4200 0 12037/35648 0 14545/2147483647 0
23:49:52 N/A N/A 971/4200 0 12043/35648 0 14553/2147483647 0
23:49:54 N/A N/A 971/4200 0 12043/35648 0 14551/2147483647 0
23:49:56 N/A N/A 968/4200 0 12041/35648 0 14549/2147483647 0


what i have to do now to increase the value

[Turgay Cavdar]

increase the proc size:
kctune nproc=value_you_need

[madhudeepan]

we have planed to increase shmmax value,,

by increasing shmax value will system gets reboot or not ..

if i changed the value is it possiable to take copy of the old kernel parameters

[madhudeepan]

ho turgay

if i increase will machine gets rebooted ..

[Turgay Cavdar]

shmmax is dynamic parameter you dont need to reboot your system. For help type man shmmax.To save your config type:
kconfig -s config_name

[Fabio Ettore]

Hi,

I cannot see proc: table is full as you have 970 processes on 4200 which is the value of kernel parameter nproc. Maybe you see messages in syslog.log because in the past nproc limit was reached.

Also about shmmax the tunable can be changed immediately without reboot.

Best regards,
Fabio

[madhudeepan]

hi Fabio


right now i checked with sar command

proc-sz value is 1114/4200

at what condition do proc will get full

what is the max and min value

[Fabio Ettore]

Hi Fabio,

in the showed condition (1114/4200) proc table IS NOT full.
You should get the message "proc: table is full" when the value of the first column will be equal or almost to the value on the second column.

To get constraints about min and max of nproc read the following:

# kctune -vq nproc
Tunable nproc
Description Maximum number of processes on the system
Module pm
.........
Constraints nproc >= 100
nproc <= 30000
nproc >= maxuprc + 5
nproc <= nkthread - 100
nproc >= semmnu + 4
Can Change Immediately or at Next Boot


HTH.

Best regards,
Fabio

[madhudeepan]

yes ,, i accept your point 1114/4400 not as full ,,, but then why i get a message in dmesg and syslog ,,

id not so what can i do with the logs in syslg and dmesg

[Fabio Ettore]

Hi,

consider that dmesg retains even old messages in its buffer, instead I don't understand what about syslog.log.
Do you see the message of proc: table is full right now into the syslog.log?

Could you please attach it here?

Fabio