kB_wr/s - Number of kilobytes the task has caused, or shall cause to be written to disk per second.kB_rd/s - Number of kilobytes the task has caused to be read from disk per second.You can use pidstat to print cumulative io statistics per process every 20 seconds with this command: # pidstat -dl 20
Sudden peaks in load and disk block wait.I also have this follow-up question to another thread I started yesterday:
Output of sar -d, system stall happened around 12.58-13.01pm. Is it possible to do with sar? Can I find this info from the already recorded sar files? How could I determine which process is causing these peaks the next time it happen? I'm having a problem with a Linux system and I have found sysstat and sar to report huge peaks of disk I/O, average service time as well as average wait time.
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