We experienced a file create (just creating empty files through a
script) rate of 10/sec on an HP 420:
uname -a output:
HP-UX svba0005 B.10.20 A 9000/800 494586331 two-user license
The file system is VxFS.
ANY help would be appreciated!
______________________________ Reply Separator _________________________________
Subject: Re: UNIX File-Create Performance
Author: stuckey (stuckey AT jaka.ece.uiuc DOT edu)
Date: 12/3/97 4:53 PM
In uiuc.mlist.adsm you write:
> We have experienced maximum file create performance of 10 files/sec
> on a UNIX file system. As I understand it, there may be ways of
> boosting this rate by tuning the file system setup (journaling, etc.).
> I would appreciate any response in this area as we have a VERY
> large number of files in some of our file systems. It seems plain
> that no matter how well ADSM might perform, this bottleneck would be a
> severely limiting factor.
> Thanks in advance.
I don't know if my last message got sent.
What are you doing in what type of setup? Mirroring and other
technologies tend to slowthings like this down, but I can get 50 files
per second out of a dorky little shell script on a very moderate AIX PPC
machine. (166 Mhz, if I remember correctly.)
aokeeffe $ uname -a
AIX okeeffe 1 4 001C9F11E100
okeeffe $ cat mkfiles
#!/bin/ksh
# Creates a large number of files.
filenumber=0
while [ $filenumber -lt 1000 ]
do
echo > $filenumber
filenumber=$((filenumber+1))
done
okeeffe $ time ./mkfiles
real 0m19.23s
user 0m0.80s
sys 0m2.25s
okeeffe $
--
Anthony J. Stuckey stuckey AT jaka.ece.uiuc DOT edu
Anthony J. Stuckey stuckey AT jaka.ece.uiuc DOT edu
"When I was young, the sky was full of stars.
I watched them burn out one by one." -Warren Zevon
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