Finding out what's in buffer cache

[Alex Georgiev]

Is anyone aware of a utility that will show me what files (or parts of files) are in buffer cache?

I don't care for the actual data blocks. I just need a list of inodes + the file system or device id + how many blocks belong to this inode.

If the utility doesn't exist, then maybe you can point me to the kernel data structure that contains this information, so that I can try to write it myself. If you are curious why I need this... A machine that I manage has these database prefetch processes. I'm trying to find out if they are bringing in new blocks into buffer cache, and forcing things out in a hurry. I also need to find out if certain files ever end up in buffer cache or not. And finally, I want this simply for entertainment and educational value.

[whiteknight · Accepted solution]

Alex,

HP does have a tools called kitrace, you need some knowledge how to read the data.

If you have valid support contract i would recommend you log a case to HP for assistance.

WK