Date: 7 Jun 1999 05:58:31 -0000 From: Yusuf Goolamabbas <yusufg@outblaze.com> To: freebsd-stable@freebsd.org Cc: freebsd-scsi@freebsd.org Subject: Are these untar times appropiate ? Message-ID: <19990607055831.22465.qmail@yusufg.portal2.com>
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3.2-STABLE
System: Dual P3/500 with 512MB RAM with Adapatec 2049U2W controller
connected to two disks (9GB and 18GB). 18GB is a Seagate ST 318275LW
camcontrol shows that this is capable of 80 MB/s with Tagged Queuing
Enabled
I have a tar file of around 1.6 GB. The directory tree is not very
deep
These are the times I am getting for untar the tar file on the 18GB
disk. Also, times for rm -rf of the directory created
Softupdates enabled
Real User Sys
untar: 13043.72 14.19 434.53
rm -rf 7036.8 8.05 172.84
I looked at the results from iostat in another virtual console and I
was getting around 0.8 MB/s. Top was showing the machine mostly idle
in CPU usage
Mounting with async mode (single user mode)
untar: 10799 13.17 462.69
rm -rf: 6537 7.82 259.64
The normal sync mode took quite a while also. I seem to have misplaced
the numbers
As a totally unscientific comparision. These are the untar times of
glibc-2.1.1 on a softupate system
glibc untar: 49 1 3.66
glibc rm -rf 2.06 0.05 0.88
Are these times appropiate ? Is there any way to make the untar go
faster. What does 80 MB/s really mean in real-life ?
Cheers, Yusuf
--
Yusuf Goolamabbas
yusufg@outblaze.com
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