On Fri, May 25, 2001 at 12:25:36AM -0700, Dirk-Willem van Gulik wrote:
>
> Hit the send button too quickly - setting both run's to do the same number
> of requests, say 4x1000 - might fix it; right now your ab-1 test is 10
> times longer tham your ab-2 test.
No, that's not the answer. I have been observing the exact same behavior on
a SVR4 platform: insanely slow connection times for ab-2.0, while
ab-1.3.20 results looked sensible. There MUST be some problem lurking
in the combination of ab with apr (on some platforms, at least. Maybe
Lachman-derived TCP stacks like in SVR4?)
With FreeBSD, the differences are also noticeable (and
I wonder what the "-t 10" switch is supposed to do,
when it actually runs for 160 seconds!??!!?):
---- ab from apache-1.3.21-dev: ----
% ../src/support/ab -t10 -k -c6 http://deejai2.mch.fsc.net:8007/tenkb.raw
Server Hostname: deejai2.mch.fsc.net
Server Port: 8007
Document Path: /tenkb.raw
Document Length: 10240 bytes
Concurrency Level: 6
Time taken for tests: 10.014 seconds
Complete requests: 3546
Failed requests: 0
Broken pipe errors: 0
Keep-Alive requests: 3515
Total transferred: 37488743 bytes
HTML transferred: 36360651 bytes
Requests per second: 354.10 [#/sec] (mean)
Time per request: 16.94 [ms] (mean)
Time per request: 2.82 [ms] (mean, across all concurrent requests)
Transfer rate: 3743.63 [Kbytes/sec] received
Connnection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 1.0 0 22
Processing: 3 16 8.6 15 328
Waiting: 0 14 8.6 13 327
Total: 3 16 8.7 15 328
Percentage of the requests served within a certain time (ms)
50% 15
66% 16
75% 17
80% 17
90% 18
95% 21
98% 28
99% 32
100% 328 (last request)
---- ab from httpd-2.0.19-dev: ----
% httpd-2.0/support/ab -t10 -k -c6 http://deejai2.mch.fsc.net:8007/tenkb.raw
Server Software: Apache/2.0.19-dev
Server Hostname: deejai2.mch.fsc.net
Server Port: 8007
Document Path: /tenkb.raw
Document Length: 10240 bytes
Concurrency Level: 6
Time taken for tests: 159.76375 seconds
Complete requests: 50000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 49509
Total transferred: 527918871 bytes
HTML transferred: 512039370 bytes
Requests per second: 314.31 [#/sec] (mean)
Time per request: 0.019 [ms] (mean)
Time per request: 0.003 [ms] (mean, across all concurent requests)
Transfer rate: 3240.86 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 9
Processing: 14 965 568.2 954 2667
Waiting: 0 8 6.5 7 261
Total: 14 965 568.2 954 2667
Percentage of the requests served within a certain time (ms)
50% 954
66% 1254
75% 1428
80% 1526
90% 1728
95% 1895
98% 2025
99% 2121
100% 2667 (longest request)
Martin
--
<[EMAIL PROTECTED]> | Fujitsu Siemens
<[EMAIL PROTECTED]> | 81730 Munich, Germany
