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sort 5.2.1 is VERY slow
From: |
Dick Hessel |
Subject: |
sort 5.2.1 is VERY slow |
Date: |
Mon, 28 Feb 2005 23:12:15 -0800 |
User-agent: |
Mozilla Thunderbird 0.7.3 (Windows/20040803) |
Hi,
I was looking at some data in a 6MB text file using sort.
When I used the --key flag, the speed of sort was embarrassingly bad.
It was *~80 times slower* on my new Athlon64 processor as on
an old 1GHz P3 using cygwin's sort under Windows 2000!
I ran
grep "konnect 1" Out_konnect | sort --key=4 -n |less
on my 2.4GHz Athlon64 processor. The file size is
home $ grep "konnect 1" Out_konnect |wc
265680 1062720 6159635
The command on Suse Linux ran for over 7 minutes.
The file is on the Linux machine, however, I can access the same
files via samba from an old Windows PC. While the Linux sort was running,
I ran the same command on the 1GHz P3 Windows 2000 system using cygwin's
sort. It ran in about 5 seconds.
The slow version of sort is
sort (coreutils) 5.2.1
Written by Mike Haertel and Paul Eggert.
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
I'm running Suse Linux
Linux linux 2.6.4-52-default #1 Wed Apr 7 02:15:23 UTC 2004 x86_64
x86_64 x86_64 GNU/Linux
The fast, cygwin version of sort on Windows is
home $ sort --version
sort (textutils) 2.0.21
Written by Mike Haertel and Paul Eggert.
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Dick
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Dick Hessel 925_417_1171 (home)
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- sort 5.2.1 is VERY slow,
Dick Hessel <=