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From Rashmi Srinivasan <rashmisrinivasan2...@gmail.com>
Subject Re: [users@httpd] Apache 2.4 (Apache Benchmarking) - Too many open files (24)
Date Fri, 23 Sep 2016 19:52:10 GMT
Thanks
I will check this.

I have another concern related to performance.
on RHEL machine, running ab for 20000 requests with 100 concurrent requests
takes almost 46 seconds, while this was taking just 2 seconds in 2.2
Please can you tell if this is the case and how can this be improved?

Thanks

On Sat, Sep 24, 2016 at 1:02 AM, Stormy <stormy22@stormy.ca> wrote:

> At 12:18 AM 9/24/2016 +0530, Rashmi Srinivasan wrote:
>
>> Hi,
>>
>> This is the output of ulimit -aÂ
>>
> [snip]
>
>> max user processes              (-u) 1024
>>
>
> Pure guesswork, but this looks low -- on a 32bit system, try 2^15; on
> 64bits, 2^16 ... or more ...
>
> P.
>
> virtual memory          (kbytes, -v) unlimited
>> file locks                      (-x) unlimited
>>
>> Thanks,
>>
>> On Fri, Sep 23, 2016 at 8:25 PM, Rubén Toribio Aldeguer <
>> rtoribio@riu.com> wrote:
>> I think your problem is not Apache, but your OS.
>> I think Apache 2.2 and 4.4 uses diferent mpm mode (my memory is poor).
>> I think you OS is limiting the number of Opens Files that can Manage.
>> (safety reasons)
>> Please, can you print you ulimit output, as I advise on a previous mail?
>>
>> Thanks.
>>
>> 2016-09-23 11:55 GMT+02:00 Rashmi Srinivasan <
>> rashmisrinivasan2007@gmail.com>:
>> Hi,
>> Do you feel this is the issue with some configuration or would this be an
>> issue with apache itself.
>> Has anybody encountered a performance issue of this kind.
>> Please comment
>>
>> Thanks,
>> RS
>>
>> On Fri, Sep 23, 2016 at 1:43 PM, Rashmi Srinivasan <
>> rashmisrinivasan2007@gmail.com> wrote:
>> Is there a minimum requirement for apache 2.4 to run these tests?
>> I have tried on different machines with different configurations with the
>> same outcome.
>> Please advise.
>>
>> Thanks,
>> RS
>>
>> On Fri, Sep 23, 2016 at 1:14 AM, Rashmi Srinivasan <
>> rashmisrinivasan2007@gmail.com> wrote:
>> Hi,
>> Thanks for checking this,
>>
>> I wanted to check the below:'
>> Â  Â  Â  Â  Stress testing of apache 2.2 works very well with the default
>> mpm worker onfiguration
>> Â  Â  Â  Â  However, apache 2.4 doesnt work at all with the default
>> configuration, gives the error:
>> Â  Â  Â  Â  Â 2000 concurrent requests
>> Â  Â  Â  Benchmarking x.x.x.x (be patient)
>> Â  Â  Â  socket: Too many open files (24)
>>
>> After changing the configuration, as described in the previous email, it
>> starts processing them:
>> Lots of timeouts are occurring.
>> Error in the error_lo is:
>> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â "AH00046: child process still
>> did not exit, sending a SIGKILL"
>> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â (2)No such file or directory:
>> [client x.x.x.c] AH01256: connect #7 to cgi daemon failed, sleeping before
>> retry
>> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â Â 11)Resource temporarily
>> unavailable: AH01252: couldn't create child process: 11:
>> I also noticed that the CPU utilzation reached 99.9%
>> Which is when apache terminates
>>
>> What changes are to be done in this case.
>> Please advise
>>
>> Thanks,
>> RS
>> Â
>>
>> On Thu, Sep 22, 2016 at 9:54 PM, Yann Ylavic <ylavic.dev@gmail.com>
>> wrote:
>> On Thu, Sep 22, 2016 at 5:20 PM, Rashmi Srinivasan
>> <rashmisrinivasan2007@gmail.com> wrote:
>> >
>> > Access log has the following status:
>> >Â  [22/Sep/2016:20:17:21 +0530] "GET /cgi-bin/script.cgi HTTP/1.0" 200 16
>>
>> What's in the *error* log (path from the ErrorLog directive)?
>> What about resources (CPU, load average, ...) on the httpd machine
>> during the stress?
>>
>> Regards,
>> Yann.
>>
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>>
>>
>>
>>
>>
>> --
>>
>> Rubén Toribio Aldeguer
>> Técnico Sistemas DataCenter
>> Informática à rea Sistemas
>> (+34) 971743030
>> www.riu.com / www.riuplaza.com
>>
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