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Operating Systems AIX Performance and paging problems Post 302372372 by zxmaus on Tuesday 17th of November 2009 08:16:35 PM
Old 11-17-2009
Hi,
by the looks of what you have posted, your system is badly paging what is causing your performance issue.
Please check your memory consumption, using 'vmstat -I 5 5' and check your memory settings - especially minperm, maxperm, lru_file_repage and similar settings. I would bet dollars for donuts that your system is not tuned at all and that you are using way more memory than you physically have.

***
please use code tags and choose a more descriptive title of your thread

Kind regards
zxmaus
 

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IO::Digest(3)						User Contributed Perl Documentation					     IO::Digest(3)

NAME
IO::Digest - Calculate digests while reading or writing SYNOPSIS
use IO::Digest; # Get a Digest::MD5 object that takes input while $fh being written or read my $fh; my $iod = IO::Digest->new ($fh, 'MD5'); print $fh "fooo"; print $iod->hexdigest DESCRIPTION
This module allows you to calculate digests while reading or writing file handles. This avoids the case you need to reread the same content to compute the digests after written a file. TEST COVERAGE
----------------------------------- ------ ------ ------ ------ ------ ------ File stmt branch cond sub time total ----------------------------------- ------ ------ ------ ------ ------ ------ blib/lib/IO/Digest.pm 100.0 n/a n/a 100.0 100.0 100.0 Total 100.0 n/a n/a 100.0 100.0 100.0 ----------------------------------- ------ ------ ------ ------ ------ ------ AUTHORS
Chia-liang Kao <clkao@clkao.org> COPYRIGHT
Copyright 2004 by Chia-liang Kao <clkao@clkao.org>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See <http://www.perl.com/perl/misc/Artistic.html> perl v5.18.2 2013-02-16 IO::Digest(3)
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