Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

RE: Apache Timeout module

by plaid (Chaplain)
on Jun 09, 2000 at 23:49 UTC ( #17418=note: print w/ replies, xml ) Need Help??


in reply to Apache Timeout module

First thing, the way you have it set up to check timestamps, the line if ($time_to_die >= ($current_time - $last_time)) { seems to suggest that $time_to_die is in seconds, as both $current_time and $last_time are in seconds, but I believe you were expecting $time_to_die in minutes, so you may want to throw a *= 60 in there or something.

One thing I was considering about this is that there isn't really a need to throw the timestamp into a file, since basically you're just storing the exact same number as is already contained in the file's modification time. Since you're already effectively performing a stat via the -e test, you can then just use the cached filehandle _ to obtain the modification time and cut out an additional file opening/reading/writing.

use Benchmark; use strict; my $time_to_die = 15; my $time_file_1 = "time1.txt"; my $time_file_2 = "time2.txt"; my $current_time = time(); # kept this outside the benchmark timethese(100000, { 'Time In File' => \&timeinfile, 'File Mod Time' => \&filemodtime }); sub timeinfile { if (-e $time_file_1) { open (TIME, "$time_file_1") || warn "Can't open Time file: $!"; my $last_time = <TIME> || warn "Unable to get timestamp from fil +e: $!"; close TIME; if ($time_to_die >= ($current_time - $last_time)) { open (TIME, ">$time_file_1"); print TIME $current_time || warn "Unable to write timestamp t +o file: $!"; close TIME; } else { unlink($time_file_1) or warn "Can't unlink file: $!"; } } else { open (TIME, ">$time_file_1"); print TIME $current_time; close TIME; } } sub filemodtime { if(-e $time_file_2) { my $last_time = (stat(_))[9]; if($time_to_die >= ($current_time - $last_time)) { open (TIME, ">$time_file_2"); close TIME; } else { unlink($time_file_2) or warn "Can't unlink file: $!"; } } else { open (TIME, ">$time_file_2"); close TIME; } } Benchmark: timing 100000 iterations of File Mod Time, Time In File... File Mod Time: 11 wallclock secs ( 6.97 usr + 3.21 sys = 10.18 CPU) Time In File: 48 wallclock secs (21.26 usr + 25.77 sys = 47.03 CPU)


Comment on RE: Apache Timeout module
Download Code
Replies are listed 'Best First'.
RE: RE: Apache Timeout module
by jjhorner (Hermit) on Jun 10, 2000 at 03:48 UTC

    I'm glad someone is checking my code! I like your mod time idea, and it seems to work.

    As for the TimeLimit, it will be in seconds, and I was using 15 just so debugging would go faster. Normally, it would be something like 900.

    Again, thanks for checking on my work. I really appreciate the feedback. If it is ever released to CPAN, look for your name in the README.

    J. J. Horner
    Linux, Perl, Apache, Stronghold, Unix
    jhorner@knoxlug.org http://www.knoxlug.org/
    

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://17418]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (13)
As of 2015-07-31 19:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (280 votes), past polls