Greetings and summaries to all,
Thanks to:
Keith
Jesper
Alan
aad_at_v.....
Tom
Brian
Stu
And to any future responders.
I should have mentioned in the original post that
I am from the land of HP-UX and have only recently
crossed over to Tru64. Hence my un-knowledge of the
/usr/field directory and it's array of (probably)
useful tools.
<SUMMARY>
============
We've used "iozone" for such tests. Look at www.iozone.org.
Be aware that all such measurements are complicated by
interaction with the file system's caches, in particular
the OS's buffer cache.
-------------------------
Create a file like
dd if=/dev/zero of=/file/location bs=1k count=100000
Then write the file to tape using whatever you want...But
append a time command on the front. Divide the file size
by the time and you are golden.
----------------------
The /usr/field/tapex utility in the "System Exercisers" part
of the standard Tru64 UNIX product does this sort of testing.
There is an open source tool called "dt" that can also do this
kind of testing:
http://www.bit-net.com/~rmiller/dt.html
The tool was written by one of our staff (I'm not certain
whether he is a contractor or permanent) and it's pretty neat.
tapex is old stuff, but it works. See the tapex reference
page for more on it.
The "dt" tool has sources available, I believe. See the web
page for info.
--------------------------
there should be a link to a tapetest program at www.amanda.org
--------------------------
% man tapex
The tape exerciser included in the exercisers subset has
a high bandwidth option. I don't know how smart it is,
but the option is there.
For simple serial tests you can use dd(1), but you have
to watch compression of the data pattern.
------------------------
Have you tried the tools in /usr/field/
There's a program called tapex which might do what you want.
Documentation is in the man page (man tapex)
------------------------
Have you tried the tapex utility in /usr/field/tapex ?
If you type "/usr/field/tapex -h" it will give you pages of
options for both input and output.
------------------------
</SUMMARY>
Regards and thanks
Robert
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Received on Tue Jun 26 2001 - 22:29:37 NZST