Michael S. Tsirkin wrote:
Quoting r. Grant Grundler <[EMAIL PROTECTED]>:
Subject: Re: performance counters in /sys
On Fri, May 20, 2005 at 10:20:29AM -0600, Ronald G. Minnich wrote:
yes, that is the accepted thing nowadays. And, boy, is it SLOW. SLOW,
SLOW, SLOW.
Open file, read ONE value, close file. Takes a long time. So we've seen
that for a number of values you really can't sample at interesting rates.
Exactly. That's Mark's gripe too.
I guess the thing that has me mystified about all this is I can
certainly appreciate the potential 'goodness' of having 1 var/file for
user oriented access but perhaps one of the better examples of why this
is just a bad idea for programmatic access is the individual process
stats. Is the implication of this that some day those too would be
moved to /sys as one stat per file?!? Can you imaging trying to run top
or ps if that were to happen?
-mark
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