Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!phigate!philica!adrie
From: adrie@philica.ica.philips.nl (Adrie Koolen)
Newsgroups: comp.os.minix
Subject: Re: Questions for Bruce on 386 patches
Keywords: 386 patches questions Bruce Evans
Message-ID: <672@philica.ica.philips.nl>
Date: 21 Sep 90 07:05:29 GMT
References: <2141@bnlux0.bnl.gov>
Reply-To: adrie@beitel.ica.philips.nl (Adrie Koolen)
Organization: Philips TDS, Innovation Centre Aachen
Lines: 16

In article <2141@bnlux0.bnl.gov> scottc@bnlux0.bnl.gov (david scott coburn) writes:
>I transferred about 10,000 blocks of data between partitions using two
>tars piped together.  It took about 20 minutes to complete.  So...
>
>   2 (read and write) x 10,000,000 bytes / 1200 seconds = ~170kb/sec
>
>Any comments on this through-put?

If my calculator is right, your throughput is 17KB/sec. On my SparcStation,
I `cpdir'ed a directory tree of 3549 blocks in 104 seconds. That results
in some 68KB/sec. It doesn't seem very fast, but my SCSI driver is tuned
for fast reading, writing goes relatively slow. BTW, I use a fs cache of
1536 blocks. I hardly notice hard disk activity when issueing the cpdir!

Adrie Koolen (adrie@ica.philips.nl)
Philips Innovation Centre Aachen