Re: Finding what's causing I/O

From: martinko (martinkov_at_pobox.sk)
Date: 09/26/05

  • Next message: Thomas Hurst: "Re: Finding what's causing I/O" 
    To: freebsd-performance@freebsd.org
Date: Mon, 26 Sep 2005 09:25:43 +0200

    Shanker Balan wrote:
    > Hello,
    >
    > Francisco Reyes wrote,
    >
    >>On Fri, 23 Sep 2005, Joseph Koshy wrote:
    >>
    >>
    >>>>Is there a way to find out which program(s) are causing the I/O?
    >>>
    >>>ktrace(8); you can use it to trace all descendants of 'init'.
    >>
    >>Looking at the man page it's non-obvious how to use it (to me).
    >>
    >>
    >>Specially it seems one needs to indicate a pid or a command. How do I
    >>trace all programs?
    >
    >
    > See top(1):
    >
    > m Toggle the display between 'cpu' and 'io' modes.
    >

    well, thanks for the switch. i couldn't find any description/explanation
    of/on the columns (VCSW,..) in top(1) man page, though. :(

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  • Next message: Thomas Hurst: "Re: Finding what's causing I/O"

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