Performance Analysis

I will try on this page to speak about some issues I get during my work.

General information.

A minor page fault can happen, where there is a dirty page of a page from a disk I/O. when an application is doing a lot of I/O , kernel try to map those I/O into kernel space, and sometimes, those pages needs to be re-read/re-write to the real I/O device, and hence produce a minor fault by instance.

How to check if there is any processor set defined :

psrset -i

and you output may looks like this one, if there is a processor set defined :

root@server@solaris-8:/root# psrset -i 
user processor set 1: processors 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

And if you want to see if a process is bind to a processor set :

pbind -q PROCESS_ID

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