Impressive performance improvements with 2.1.120 & pre7 !

[Justin T. Gibbs]

In article <87zpcezi56.fsf at forge.localdomain> you wrote:
> 
> 	I just have one word to express what I feel: WOW !
> I'm just having awesome performance compared with 2.1.119 & pre7,
> here are some numbers (timing with my watch) :
> 
> 					2.1.119	2.1.120
> *xemacs reloading after 1 start :	+6s	2s
> *netscape reloading after 1 start:     +12s     4s
> 
> (+ means slightly more than)

This is probably a change in the VM code that improved program
text page caching.

> 	So these show more than 3times faster reloading !!
> (I don't have numbers for the 1st time loading but this
> combination definitely kills anything else...)

# bonnie -s 1024
File './Bonnie.3449', size: 1073741824
Writing with putc()...done
Rewriting...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
              -------Sequential Output-------- ---Sequential Input-- --Random--
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
         1024 18766 96.6 55157 89.3  8921 18.2 16883 97.4 62554 70.7 337.9  5.3

The rewrite test results are a bit wierd (have to look into that), but
the sequential throughput is pretty amazing.  This is with 4 Cheetah drives
on a single LVD segment in a RAID 0 configuration on a PII-350.

--
Justin

To Unsubscribe: send mail to majordomo at FreeBSD.org
with "unsubscribe freebsd-aic7xxx" in the body of the message