Thank you, Martin!

> It might be a site that serves dynamic context (such as different cookie
> IDs mentioned) where the file size changes between each query.


http://www.celebrazio.net/tech/unix/apache_bench.html


Easy way to verify:


Code: $ wget <url>


Repeat that twice, then:


Code: $ diff <retrieved filename> <retrieved filename>.1


See if there are differences. If yes, then you can ignore the length-related
failures. If no, it's some other cause and need to investigate further.


On Mon, Jun 29, 2009 at 1:01 AM, Martin Westin
<[email protected]>wrote:

>
> You probably don't really have any failed requests
> http://www.google.com/search?&q=apache+bench+failed+length
>
> I suggest looking at the top result.
>
>
> On Jun 27, 5:08 am, joshua <[email protected]> wrote:
> > Hi Cakes,
> > Today I use ab to give a test of my cake site, there are so many failed
> > requests in the output log. I have no idea how to fix it? Can you give
> some
> > ideas or suggestions on this? Thanks in advance! The site was deployed on
> my
> > local machine, so I can eliminate bandwidth factor firstly.
> >
> > ab -c 10 -t 60http://www.mysite.com/index
> >
> >
> >
> >
> >
> > > This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
> > > Copyright 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> > > Copyright 2006 The Apache Software Foundation,http://www.apache.org/
> >
> > > Benchmarkingwww.mysite.com(be patient)
> > > Finished 53 requests
> >
> > > Server Software:        Apache/2.2.6
> > > Server Hostname:        www.mysite.com
> > > Server Port:            80
> >
> > > Document Path:          /index
> > > Document Length:        109093 bytes
> >
> > > Concurrency Level:      10
> > > Time taken for tests:   61.296875 seconds
> > > Complete requests:      53
> > > *Failed requests:        40*
> > >    (Connect: 0, Length: 40, Exceptions: 0)
> > > Write errors:           0
> > > Total transferred:      5804514 bytes
> > > HTML transferred:       5787504 bytes
> > > Requests per second:    0.86 [#/sec] (mean)
> > > Time per request:       11565.448 [ms] (mean)
> > > Time per request:       1156.545 [ms] (mean, across all concurrent
> > > requests)
> > > Transfer rate:          92.47 [Kbytes/sec] received
> >
> > > Connection Times (ms)
> > >               min  mean[+/-sd] median   max
> > > Connect:        0    0   2.1      0      15
> > > Processing:  4296 10221 2666.6  10648   16203
> > > Waiting:     4265 10152 2674.7  10585   16031
> > > Total:       4296 10221 2666.2  10648   16203
> >
> > > Percentage of the requests served within a certain time (ms)
> > >   50%  10640
> > >   66%  11750
> > >   75%  12000
> > >   80%  12390
> > >   90%  13343
> > >   95%  14000
> > >   98%  15468
> > >   99%  16203
> > >  100%  16203 (longest request)
> >
> > > ab -c 3 -t 60http://www.mysite.com/index
> > > This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
> > > Copyright 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> > > Copyright 2006 The Apache Software Foundation,http://www.apache.org/
> >
> > > Benchmarkingwww.mysite.com(be patient)
> > > Finished 54 requests
> >
> > > Server Software:        Apache/2.2.6
> > > Server Hostname:        www.mysite.com
> > > Server Port:            80
> >
> > > Document Path:          /index
> > > Document Length:        109094 bytes
> >
> > > Concurrency Level:      3
> > > Time taken for tests:   60.62500 seconds
> > > Complete requests:      54
> > > *Failed requests:        30*
> > >    (Connect: 0, Length: 30, Exceptions: 0)
> > > Write errors:           0
> > > Total transferred:      5913925 bytes
> > > HTML transferred:       5896600 bytes
> > > Requests per second:    0.90 [#/sec] (mean)
> > > Time per request:       3336.806 [ms] (mean)
> > > Time per request:       1112.269 [ms] (mean, across all concurrent
> > > requests)
> > > Transfer rate:          96.15 [Kbytes/sec] received
> >
> > > Connection Times (ms)
> > >               min  mean[+/-sd] median   max
> > > Connect:        0    0   2.9      0      15
> > > Processing:  2344 3235 624.0   3312    4609
> > > Waiting:     2312 3207 618.8   3296    4578
> > > Total:       2359 3236 623.2   3312    4609
> >
> > > Percentage of the requests served within a certain time (ms)
> > >   50%   3312
> > >   66%   3640
> > >   75%   3671
> > >   80%   3734
> > >   90%   3984
> > >   95%   4421
> > >   98%   4484
> > >   99%   4609
> > >  100%   4609 (longest request)
> >
> > > ab -c 3 -n 100http://www.mysite.com/index
> > > This is ApacheBench, Version 2.0.40-dev <$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/
> >
> > > Benchmarkingwww.mysite.com(be patient).....done
> >
> > > Server Software:        Apache/2.2.6
> > > Server Hostname:        www.mysite.com
> > > Server Port:            80
> >
> > > Document Path:          /index
> > > Document Length:        109094 bytes
> >
> > > Concurrency Level:      3
> > > Time taken for tests:   108.703125 seconds
> > > Complete requests:      100
> > > *Failed requests:        46*
> > >    (Connect: 0, Length: 46, Exceptions: 0)
> > > Write errors:           0
> > > Total transferred:      10940894 bytes
> > > HTML transferred:       10909394 bytes
> > > Requests per second:    0.92 [#/sec] (mean)
> > > Time per request:       3261.094 [ms] (mean)
> > > Time per request:       1087.031 [ms] (mean, across all concurrent
> > > requests)
> > > Transfer rate:          98.29 [Kbytes/sec] received
> >
> > > Connection Times (ms)
> > >               min  mean[+/-sd] median   max
> > > Connect:        0    0   2.1      0      15
> > > Processing:  2250 3240 734.5   3484    4750
> > > Waiting:     2234 3205 733.7   3421    4734
> > > Total:       2250 3241 734.7   3484    4750
> >
> > > Percentage of the requests served within a certain time (ms)
> > >   50%   3484
> > >   66%   3765
> > >   75%   3875
> > >   80%   3968
> > >   90%   4109
> > >   95%   4421
> > >   98%   4703
> > >   99%   4750
> > >  100%   4750 (longest request)
> >
> > --
> > Thanks
> > Joshua
> >
>


-- 
Thanks
Joshua

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