hard disk speed or machine performance overall

I'm facing hard time to switch between apps and slowness although i have SSD, i7 extreme CPU, 16GB ram on my W520 thinkpad

how to see whats the I/O on the disk and if there is any errors or somethign is wrong with my main hardrive? i have mPCI disk as OS disk and secondary SATA storage

running ubuntu linux 64bit btw

 

i´d say do a reset of your computer and install evrything again. This is the quick but rather inconvinient fix i think. Wouldnt know otherwise what the problem would be

 

Not sure about Linux apps (ask in the Linux section if nobody knows here), but on Windows you can use Crystal Disk Mark, as well as many other apps, to check drive speeds. Have you always experienced slow performance on Ubuntu, or is that a recent development? My first guesses would be that your system may have poor Linux support or that a recent kernel update introduced some bugs or resource drains.

I assume you're not busting your computer's butt with an extreme processing load at all times, experiencing slow load times on programs that are installed on a slower secondary storage drive, or filling your SSD to excessive levels (usually considered to be over 70%, give or take)?

 

Sounds like TRIM isn't working on your system?

What kind of SSD? What kind of programs? What kind of workloads? What is the %filled of the SSD and HDD?

How/where did you install programs to? Your data is mostly residing on which drive?

Battery power or AC? Is the cpu being throttled (thermally or otherwise)?

More info would be appreciated...

 

it turned out compiz (3D stuff) was killing my CPU using 50-90% all the time

so i did these steps as i read on ubuntuforums and seems went down now:
dconf reset -f /org/compiz/
setsid unity


if dconf is not available then do sudo apt-get dconf then execute the commands above