[wplug-internet] Slow Perl
Vance Kochenderfer
vkochend at nyx.net
Wed Aug 27 14:53:20 EDT 2008
Apparently the version of Perl shipped by Red Hat (and, by
extension, CentOS) has a bug which slows certain operations. You
can read more about it at
<http://blog.vipul.net/2008/08/24/redhat-perl-what-a-tragedy/>.
Running the sample code from that page yields the following on the
WPLUG server:
$ time perl ./test.pl
..................................................
real 0m6.120s
user 0m4.890s
sys 0m0.010s
which seems to indicate that it is affected. (For comparison's
sake, a 1999-vintage dual-300MHz Sun Ultra 2 ran it in 0m2.005s.)
Although it's probably not much of an issue since our CPU usage
tends to stay in the single digits anyway, we should make a note
to update whenever CentOS releases a fix.
Vance Kochenderfer | "Get me out of these ropes and into a
vkochend at nyx.net | good belt of Scotch" -Nick Danger
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