per-process iostat?

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

Any tool to analyze per-process i/o statistics?

I heard my disks a lot and was wondering what caused activity.

I wrote a simple script to take a hundred samples of all my processes' 
total blocks read, total blocks written, total swaps in/out, total 
voluntary context switches, and pageins.

I sorted it and ran uniq and found elinks was writing to disk a lot:

  PID INBLK  OUBLK NSWAP   NVCSW PAGEIN COMMAND
20440   447 276293     0 1155795   2685 elinks 
20440   447 276300     0 1155813   2685 elinks 
...
20440   447 276450     0 1156353   2685 elinks 
20440   447 276457     0 1156371   2685 elinks 
...
20440   447 276490     0 1156469   2685 elinks 
20440   447 276497     0 1156487   2685 elinks 
20440   447 276497     0 1156489   2685 elinks 

I killed elinks and I will later research to see what it was doing. I 
hadn't used it in a several hours.

Any suggestions for tools that can already show per-process I/O statistics 
or other analysis?

(I may write an awk tool to compare increases of certain stats.)

  Jeremy C. Reed