2 x quad-core system is slower that 2 x dual core on FreeBSD

[Alexey Vlasov]

On Sat, Dec 01, 2007 at 11:04:41PM +0100, Daniel Gerzo wrote:
> Please try with RELENG_7 (aka. FreeBSD 7.0-BETA3) and ULE scheduler.

I used 7.0-BETA3 and it is much worse.
ULE, w/o PAE (or with PAE)

# ./ab -n 100 -c 20 -t 30 http://somesite-freebsd.com/ab/
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking test-f1-apache-aux2.1gb.ru (be patient)
Finished 17 requests


Server Software:        Apache/2.2.3
Server Hostname:        somesite-freebsd.com
Server Port:            80

Document Path:          /ab/
Document Length:        41451 bytes

Concurrency Level:      20
Time taken for tests:   30.448737 seconds
Complete requests:      17
Failed requests:        0
Write errors:           0
Total transferred:      1191762 bytes
HTML transferred:       1178622 bytes
Requests per second:    0.56 [#/sec] (mean)
Time per request:       35822.043 [ms] (mean)
Time per request:       1791.102 [ms] (mean, across all concurrent
requests)
Transfer rate:          38.20 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.9      0       2
Processing:   490 4160 8103.9    640   25972
Waiting:       91  125  70.4    110     394
Total:        490 4160 8103.8    640   25972

Percentage of the requests served within a certain time (ms)
  50%    631
  66%    709
  75%    721
  80%    734
  90%  19495
  95%  25972
  98%  25972
  99%  25972
 100%  25972 (longest request)

Do you have any more ideas?

I know that I can try to change to amd64,
but I'm sure that this won't solve my problems. As far as I remember it
didn't help Alexey Popov ( author of this thread).

And by the way I couldn't launch Zend Optimizer (3.3.0.) on amd64. It
gave me Segmentation fault: 11 (core dumped).
http://www.zend.com/forums/index.php?t=msg&goto=13585&S=a322ef7edb5d49c70f431607e648fb57&srch=amd64+freebsd#msg_13585
And without it as you undesrtand yourself virtual hosting is nothing.

Looking freebsd-maillists I noticed the same discription of
the same problem as I have. 
http://lists.freebsd.org/pipermail/freebsd-performance/2007-July/002781.html

--
BRGDS. Alexey Vlasov.