Unix iTOps Tube

Monday, May 14, 2012

Mailbox server performance issue


my company's mailbox server has severe performance issue on the days while full backup is running. There is huge I/O in another "mail replication process" for standby servers ( which runs all the time, every 15 mins. ).

specs of servers :- RHEL5.5 , kernel -2.6.18-53.1.6.el5 , 8 core Intel Xeon 2.66 GHz, 32 GB RAM.24 GB VM.

strangely I see

swappiness =0 ( proposing it to be 50 )

HugePages_Total: 0 ( proposing it to be 100 )

HugePages_Free: 0

HugePages_Rsvd: 0

Hugepagesize: 2048 kB ( proposing it to be 4096 )

-- proposing to configure memlock for mailbox process as well .

Before proposing to higher management for change in these settings to an optimized value, I wanted to confirm and take suggestions about this issue and few other parameters which could be adjusted.

No comments:

Post a Comment