02-21-2010
Post your code
Speeding up a script is not usually very easy to do without major rewrites. If you post some of your code here, we can offer better advice.
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Hello,
I have a Supermicro server with a P4SCI mother board running Debian Sarge 3.1. This is the "dmidecode" output related to RAM info:
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hi i have a script that is taking the difference of multiple columns in a file from a value from a single row..so far i have a loop to do that.. all the data is floating point..fin has the difference between array1 and array2..array1 has 700 x 300= 210000 values and array2 has 700 values..
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3. Shell Programming and Scripting
Hey together,
You should know, that I'am relatively new to shell scripting, so my solution is probably a little awkward.
Here is the script:
#!/bin/bash
live_dir=/var/lib/pokerhands/live
for limit in `find $live_dir/ -type d | sed -e s#$live_dir/##`; do
cat $live_dir/$limit/*... (19 Replies)
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4. Shell Programming and Scripting
I have a script that processes a fair amount of data -- say, 25-50 megs per run. I'd like ideas on speeding it up. The code is actually just a preprocessor -- I'm using another language to do the heavy lifting. But as it happens, the preprocessing takes much more time than the final processing... (3 Replies)
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5. Filesystems, Disks and Memory
I analysed disk performance with blktrace and get some data:
read:
8,3 4 2141 2.882115217 3342 Q R 195732187 + 32
8,3 4 2142 2.882116411 3342 G R 195732187 + 32
8,3 4 2144 2.882117647 3342 I R 195732187 + 32
8,3 4 2145 ... (1 Reply)
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6. Shell Programming and Scripting
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)
Discussion started by: gimley
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7. Shell Programming and Scripting
Hi,
Im quite new to scripting and would like a bit of assistance with trying to speed up the following script. At the moment it is quite slow....
Any way to improve it?
total=111120
while
do
total=`expr $total + 1`
INCREMENT=$total
firstline = "blablabla"
secondline = "blablabla"... (5 Replies)
Discussion started by: brunlea
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8. Shell Programming and Scripting
hey guys i have a perl script wich use to compare hashes but it tookes a long time to do that so i wich i will have the soulition to do it soo fast
he is the code
<redacted> (1 Reply)
Discussion started by: benga
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9. Shell Programming and Scripting
Hi
I have written a shell script which will test 300 to 500 IPs to find which are pinging and which are not pinging.
the script which give output as
10.x.x.x is pining
10.x.x.x. is not pining
-
-
-
10.x.x.x is pining
like above.
But, this script is taking... (6 Replies)
Discussion started by: kumar85shiv
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10. Shell Programming and Scripting
Hello,
I am basic level shell script developer. I have developed the following script. The shell script basically tracking various files containing certain strings. I am finding options to make the script run more faster. Any help/suggestion would be appreciated :)
#! /bin/bash
# Greps for... (6 Replies)
Discussion started by: Bhanuprasad
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LEARN ABOUT HPUX
posix_fadvise64
posix_fadvise(2) System Calls Manual posix_fadvise(2)
NAME
posix_fadvise(), posix_fadvise64() - file advisory information
SYNOPSIS
Parameters
fd The open file descriptor to which the fadvise operation applies.
offset The begining of the specified range as a positive, byte offset.
len The length of the specified range in bytes.
advice Specifies advice to be applied to range.
DESCRIPTION
The function is used to advise the system about the expected behavior of the application with respect to the data in the file associated
with the open file descriptor, fd, starting at offset and continuing for len bytes. The specified range need not currently exist in the
file. If len is zero, all data following offset is specified.
It should be noted that the effect of all hints is cumulative for a given file object. All hints will be removed on processing the last
close of the file object.
The function may be used for large file access by a 32-bit application built with set to 64.
The advice parameter is used to convey the hint to be applied to the data and may be one of the following values:
Specifies that the application has no advice to give on its behavior with respect to the specified data. It is the default characteristic
if no advice is given for an open file.
Specifies that the application expects to access the specified range of data
sequentially from the lower offsets to higher offsets.
Specifies that the application will expect to access the specified
specified range of data in a random order.
Specifies that the application will expect to access the specified
range of data in the near future.
Specifies that the application will expect that it will not
access the specified range of data in the near future.
Specifies that the application will expect to access the specified range
of data once and then not reuse it thereafter.
These values will be defined in
RETURN VALUE
Successful completion.
Failure.
is set to indicate the error.
ERRORS
If the service fails, is set to one of the following values:
The fd argument is not a valid file descriptor.
The fd argument is associated with a pipe or FIFO.
The posix_fadvise operation is not supported by the underlying file system.
The value of advice or one of the other input values has been found to be invalid.
A designated hint is not supported by the underlying file object.
EXAMPLES
AUTHOR
was derived by HP from the IEEE POSIX 1003.1-2001 Standard.
SEE ALSO
fadvise(2), fcntl(2), fadvise(5), fcntl(5).
STANDARDS CONFORMANCE
posix_fadvise(2)