How to find what is causing freezes sometimes?

[temen]

Hi,

Im not sure if this is correct forum.. but.

Sometimes my macbook 17'' 2011 is lagging, freezing.
I have always eye for memory/cpu usage (iStat), so I see I always have at least 1-2GB ram free (of 8GB total), cpu usage is very rare more than 20%.

Maybe it's lagging because of iowait?
There's some good way to find out what is causing slowness sometimes? If I will know that this is hard drive for example I can buy ssd. But I'd like to know before I'll buy anything 😉

Thanks!

 

[yakult121]

Hi,

Im not sure if this is correct forum.. but.

Sometimes my macbook 17'' 2011 is lagging, freezing.
I have always eye for memory/cpu usage (iStat), so I see I always have at least 1-2GB ram free (of 8GB total), cpu usage is very rare more than 20%.

Maybe it's lagging because of iowait?
There's some good way to find out what is causing slowness sometimes? If I will know that this is hard drive for example I can buy ssd. But I'd like to know before I'll buy anything 😉

Thanks!

Happens to mine as well. I see lagging, sometime the bouncing beach ball would just come onscreen for no reason.

Once in a while, OSX will reboot under heavy load (I'm running VirtualBox 4.1.6 with Oracle Solaris as Guest).