> thanks. question: why the counter in your code example?
<<I presume you mean the '$readIt++' - that is not really a counter,
more just a boolean flag.... We set it to zero and once we see that
the /$RightHeader/ we flip it on and get the next line of input. >>
yes, i understand that, i guess the question should have been, why do we
need it?
why not just do a next unless /REGEX/ then
if /$find/ ....
>
> hmm..guess i should have scoured the man page before posting the question.
> turns out one can print just the Total columns with 'prstat -t'
<<which I presume means that it would gin up only the
NPROC USERNAME SIZE RSS MEMORY TIME CPU
17 prago 1596M 394M 2.9% 0:48.54 11%
47 oracle 13G 12G 91% 38:17.25 4.1%
5 patrol 36M 23M 0.2% 10:53.17 0.2%
11 dbmsys 52M 20M 0.1% 0:00.53 0.1%
53 root 173M 113M 0.8% 5:32.40 0.1%
Total: 208 processes, 875 lwps, load averages: 2.03, 2.04, 2.12
you will of course not that the code I offer you has no problem with that.
>>
yes
<<
or you might just go with
my $pscmd='ps -ae -o user,rss,vsz,time';
open(INPUTDATA, "$pscmd|") or
die "silly critter puked on ps cmd:$!\n";
and do your own direct grovelling of the data set:
since your 'percentages' there are the ratio of RSS to VSZ...
once one had converted that to and from page sizes - or not -
if all you want is the percentages...
>>
funny you should say this. little background: the captured data will be
insterted into a few oracle DB tables for later querying. as of now i am
opening 2 pipes and will love to emlinate one of them. so your idea here may
be the solution.
-snip--
$ps = '/usr/bin/ps -eo user,pcpu,pmem,vsz,comm';
$pr = '/usr/bin/prstat -t';
open (PIPE, "$ps|") or die "could not pipe command: $!";
open (PIPE2, "$pr|") or die "could not pipe command: $!";
while (<PIPE>) {
next if $_ =~ /USER/;
my($null,$user,$cpu,$mem,$vmem,$cmd) = split(/\s+/);
}
while (<PIPE2>) {
next if $_ =~ /NPROC/;
my($tuser,$tcpu,$tmem) = (split(/\s+/)) [2,5,7];
last if $_ =~ /^Total/i;
}
..
..
close PIPE;
close PIPE2;
-snip--
now the other ugly problem is how to stop prstat in the while loop(just want
the first instance of stats then quit). i know there has to be a better way
then the ugly 'last if..'
<<
I still say it would be fun to rip the prstat code apart and
get your head around what really gets done in 'top' and/or any
of it's variants....>>
hmm.. i will see how my weekend shapes up. if i need to kill a couple of
hours :-)
moving right along here:
<<I am a bit concerned by Sudarsan Raghavan most elegant offer:
...
so I fear his (1../^NPROC/) isn't doing quite what he was hoping that
it would be doing.... >>
yes, i noticed that, but was easily fixed with minor adjustments
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