My script builds a lot of these array lists, then compares their sizes which solves my problem, but runs very slow.
Code:
set -A comboSorted -- $(
for x in ${IDs[*]}
do
nawk -v s=$x '
BEGIN { testPattern="^" s "$" }
{
if ( $2 ~ testPattern ) {
getline;getline;
if ($1 == "IMAGE_SIZE")
print s":"$2"-"$3
}
}' "tempFile" ;
done | sort -u
)
I can see the CPU isn't working hard, so maybe too many read/writes to the HDD? Can you guy suggest any improvements?
Hello experts,
I have a series issue in script that result with bad peformence and I wonder if you can assist me.
For example
I have two files:
File-New, size 15Mb.
File-Old, size 1Mb.
File-New content:
a
b
c
k
File-Old content:
d
f
a
b (0 Replies)
Ih all,
i have multiples ksh scripts for crontab's unix jobs
they all have same variables declarations and some similar functions
i would have a only single script file to declare my variables, like:
var1= "aaa"
var2= "bbb"
var3= "ccc"
...
function ab { ...}
function bc { ... }... (2 Replies)
Hi,
I am running a BASH shell with the following script. The script works and gives me correct output but is very slow with large files. The more rows and columns (width and height) the slower as you can probably see.
How can I do what I want more efficiently? Any ideas welcome. It has been... (10 Replies)
I have a bash script that will take approx. 130 days to complete. I am trying to grep a list of 1,144 user ID's out of 41 (1 GB each) files. The 41 files were originally one 41 G file, but that was horrendously too slow.:eek:
This is my current file:
#!/bin/bash
for i in `cat... (11 Replies)
Hi
I am new to this Scripting process and would like to know How can i write a ksh script that will call other ksh scripts and write the output to a file and/or email.
For example
-------
Script ABC
-------
a.ksh
b.ksh
c.ksh
I need to call all three scripts execute them and... (2 Replies)
I had written a perl script to compare two files: new and master and get the output of the first file i.e. the first file: words that are not in the master file
STRUCTURE OF THE TWO FILES
The first file is a series of names
ramesh
sushil
jonga
sudesh
lugdi
whereas the second file (could be... (4 Replies)
Basically my requirement is to know the total number of free anonymous ports.
anonymous port range is 32768- 65535.
i wrote a script for that
**********************************************
for i in {32768..65535}
do
netstat -an | grep $i > /dev/null
if
... (21 Replies)
Hi
I know the basic about script and sleep processes.
However this is more tricky:
I would like to run
sh -x /sbin/dhclient-script and slow down the output of the script as a whole.
How would you do it?
I would like to delay output on the screen with 1 second for every line for the output... (3 Replies)
Hello all,
Currently I am using a script with "curl" to get the an alert if 200 ok would not be grepped.and the link is down.
is it possible to get an alert mail if a particular link on a website is not completely down but SLOW?? (0 Replies)
I have shell program as below
#!/bin/sh
echo ======= LogManageri start ==========
#This directory is getting the raw data from remote server
Raw_data=/opt/ftplogs
# This directory is ready for process the data
Processing_dir=/opt/processing_dir
# This directory is prcoessed files and... (4 Replies)
Discussion started by: Chenchireddy
4 Replies
LEARN ABOUT DEBIAN
readonly::xs
XS(3pm) User Contributed Perl Documentation XS(3pm)NAME
Readonly::XS - Companion module for Readonly.pm, to speed up read-only scalar variables.
VERSION
This document describes version 1.04 of Readonly::XS, December 6, 2005.
SYNOPSIS
Install this module, but do not use it.
DESCRIPTION
The Readonly module (q.v.) is an effective way to create non-modifiable variables. However, it's relatively slow.
The reason it's slow is that is implements the read-only-ness of variables via tied objects. This mechanism is inherently slow. Perl
simply has to do a lot of work under the hood to make tied variables work.
This module corrects the speed problem, at least with respect to scalar variables. When Readonly::XS is installed, Readonly uses it to
access the internals of scalar variables. Instead of creating a scalar variable object and tying it, Readonly simply flips the SvREADONLY
bit in the scalar's FLAGS structure.
Readonly arrays and hashes are not sped up by this, since the SvREADONLY flag only works for scalars. Arrays and hashes always use the tie
interface.
Why implement this as a separate module? Because not everyone can use XS. Not everyone has a C compiler. Also, installations with a
statically-linked perl may not want to recompile their perl binary just for this module. Rather than render Readonly.pm useless for
these people, the XS portion was put into a separate module.
Programs that you write do not need to know whether Readonly::XS is installed or not. They should just "use Readonly" and let Readonly
worry about whether or not it can use XS. If the Readonly::XS is present, Readonly will be faster. If not, it won't. Either way, it will
still work, and your code will not have to change.
Your program can check whether Readonly.pm is using XS or not by examining the $Readonly::XSokay variable. It will be true if the XS
module was found and is being used. Please do not change this variable.
EXPORTS
None.
SEE ALSO
Readonly.pm
AUTHOR / COPYRIGHT
Eric Roode, roode@cpan.org
Copyright (c) 2003-2005 by Eric J. Roode. All Rights Reserved. This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
To avoid my spam filter, please include "Perl", "module", or this module's name in the message's subject line, and/or GPG-sign your
message.
perl v5.14.2 2011-11-15 XS(3pm)
06-09-2011
