Configure Kernel Parameter and number of open file descriptor

Tuesday, January 1, 2013

Global setting can be found via /proc/sys/fs/file-max

Change it can be done via /etc/security/limits.conf

# soft limit

ulimit -Sn

# Hard Limit

ulimit -Hn

ulimit -Su

ulimit -Hu

Check current value:

sysctl -a

Below is the Oracle recommendation kernel parameters.

semmsl semmns semopm semmni	250 32000 100 128	/proc/sys/kernel/sem
shmmni	4096	/proc/sys/kernel/shmmni
shmmax	Recommended: More than half the physical memory	/proc/sys/kernel/shmmax
file-max	6815744	/proc/sys/fs/file-max
ip_local_port_range	Minimum: 9000 Maximum: 65500	/proc/sys/net/ipv4/ip_local_port_range
rmem_default	262144	/proc/sys/net/core/rmem_default
rmem_max	4194304	/proc/sys/net/core/rmem_max
wmem_default	262144	/proc/sys/net/core/wmem_default
wmem_max	1048576	/proc/sys/net/core/wmem_max
aio-max-nr	1048576	/proc/sys/fs/aio-max-nr

To make the changes, we can update /etc/sysctl.conf

Once the file is being update, we can run below command to make it effective,

/sbin/sysctl -p

We can use ipcs –lm to check the

IEEE Final Year Project centers make amazing deep learning final year projects ideas for final year students Final Year Projects for CSE to training and develop their deep learning experience and talents.

IEEE Final Year projects Project Centers in India are consistently sought after. Final Year Students Projects take a shot at them to improve their aptitudes, while specialists like the enjoyment in interfering with innovation.

corporate training in chennai corporate training in chennai

corporate training companies in india corporate training companies in india

corporate training companies in chennai corporate training companies in chennai

I have read your blog its very attractive and impressive. I like it your blog. Digital Marketing Company in Chennai Project Centers in Chennai

SQL Panda