I am checking a Linux VM unresponsive issue and I was told that it might be caused by some APP made Linux Kernel used too much memory,(more than 800MB on a 32bit system), I want to monitor memory usage of the Kernel, how can I do that? is the Kernel memory usage equal to the sum up of output of /proc/slabinfo?

I think you will get a lot of info on the net if you try to look for "kernel memory usage"

Sounds like fishing in the dark. Go back to the person that suggested this and ask:
- on what do they base this assertion
- what evidence do they suggest you collect

There are many reasons a system might misbehave - get some evidence rather than jumping on what is probably the least likely. To satisfy your curiousity, use the numbers provided by /proc/meminfo rather than attempting to sum the slabs yourself - there are several fields that could be considered "kernel memory". And no, they aren't "all of it", but close enough to see trends in growth if any exists.

Personally I would be looking at constraints and device emulation imposed by your VMWare host (mentioned in your other thread, but left out of this).

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Thank you for your advice, I am newbie to Linux, would you show me what fields of /proc/meminfo that can be considered as "kernel memory"? is there anyway to get a value that represents kernel memory usage directly?

you might want to read www.linuxatemyram.com

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