Re: apache 2.4 mpm prefork or event?
Re: apache 2.4 mpm prefork or event?
- Subject: Re: apache 2.4 mpm prefork or event?
- From: John Pollard via Webobjects-dev <email@hidden>
- Date: Tue, 11 Jan 2022 15:13:49 +0000
Thanks very much, good to know, will stick with prefork.
> On 11 Jan 2022, at 14:45, Michael Kondratov <email@hidden>
> wrote:
>
> You need to use prefork Apache. Processes instead threads. The WO adapter
> will not work in a multithreaded setup.
>
> Disable http2.
>
> Michael
>
> Sent from my iPhone
>
>> On Jan 11, 2022, at 4:21 AM, John Pollard via Webobjects-dev
>> <email@hidden> wrote:
>>
>> Hello list,
>>
>> I recently moved to Amazon Linux 2 and apache 2.4
>>
>> In /etc/httpd/conf.modules.d/00-mpm.conf
>>
>> If I opt for prefork, I see this in the error log:
>>
>> The mpm module (prefork.c) is not supported by mod_http2. The mpm determines
>> how things are processed in your server. HTTP/2 has more demands in this
>> regard and the currently selected mpm will just not do. This is an advisory
>> warning. Your server will continue to work, but the HTTP/2 protocol will be
>> inactive.
>>
>> If I instead opt for the event module
>>
>> I intermittently get segmentation faults logged, such as:
>> [Tue Jan 11 07:35:36.570934 2022] [core:notice] [pid 2485:tid
>> 139715274359360] AH00052: child pid 3132 exit signal Segmentation fault (11)
>>
>> Should I be able to use mpm event and how important is having support for
>> http/2? I believe I have the correct mod_WebObjects.so for apache 2.4, works
>> fine with prefork
>>
>> Many thanks,
>> John
>>
>>
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