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From: mi@rtfm.ziplink.net (Mikhail Teterin)
Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.bsdi.misc,comp.sys.sgi.misc
Subject: Re: no such thing as a "general user community"
Date: 27 Mar 1997 15:30:01 GMT
Organization: Aldan at Newton Upper Falls
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Honorable Larry McVoy
wrote on 27 Mar (in article <5hd29s$e7t@fido.asd.sgi.com>):
=File & VM system latencies in microseconds - smaller is better
=--------------------------------------------------------------
=Host OS 0K File 10K File Mmap Prot Page
= Create Delete Create Delete Latency Fault Fault
=--------- ------------- ------ ------ ------ ------ ------- ----- -----
=P5-133 FreeBSD 2.2-C 2857 1123 4000 3225 133 -1 0.0K
=R10K IRIX64 6.2-no 374 389 353 387 55 -1 21.5K
=About a factor of 10. The R10K is 2x the perf of the P5 but the FreeBSD
=system is sitting idle waiting for the desk. An infinitely fast CPU
=wouldn't help.
From what I can see, this demonstrates the superiority of hardware,
rather then OS. We don't even see what kind of disk/adapter was
used on the machines (IDE? :)
FreeBSD's ccd-driver used over same several disks increases the
speed nearly linear...
And look! For MMap it is only 2.+ times worse! Make it a PPro-200
with 512 cache and SGI will loose this...
=Don't get me wrong. I think free software is great. I think Matt is
=one smart cookie, I'd love to hire him. Ditto for the FreeBSD team.
=But make no mistake there is more to an OS than a simple minded file
=system or a context switch. SGI's OS scales to 100s of CPUs, supports
=more devices, and has more stuff that people with $$$ want. This is
=serious software with serious people working on it. Do you want IRIX for
=a desktop to read news? Hell no, install Linux or FreeBSD or whatever
=on your 386 and you are done. If you have real work to do you may find
=that you have to pay for your tools.
Not that I disagree competely, but the free Unices are stepping on
Big Vendors...
-mi
--
"Windows for dummies"