Mailing List Archive

---------- Forwarded message ---------
From: Joe Schaefer <joe@sunstarsys.com>
Date: Fri, Aug 19, 2022 at 10:37 PM
Subject: Re: Experience running mod_perl2 with mpm_event on Solaris 11
To: pengyh <pengyh@mail.de>


Seriously it’s always been a quality of implementation issue in open source
libc implementations (FreeBSD libc isn’t any better than glibc for modperl
and event_mpm).

I papered over a third player in the memory management regimes in play. The
real problem for modperl isn’t apr pool allocations, it’s the bucket
brigades in the filter stacks. That stuff is hitting malloc/free multiple
times every time you deliver content to the browser. Combine that with a
lot of concurrent ithreads and things fall apart on non Solaris libc
implementations.


On Fri, Aug 19, 2022 at 10:17 PM Joe Schaefer <joe@sunstarsys.com> wrote:

> Lower case t on technology
>
> On Fri, Aug 19, 2022 at 10:17 PM Joe Schaefer <joe@sunstarsys.com> wrote:
>
>> https://sunstarsys.com/CMS/Technology
>>
>> On Fri, Aug 19, 2022 at 10:15 PM pengyh <pengyh@mail.de> wrote:
>>
>>> i am not a programming expert. but I hear that most scripts like
>>> perl/python/ruby support threads not that well. is it?
>>>
>>>
>>> Joe Schaefer wrote:
>>> > Yes, with per Interpreter Threads. Everything else uses a Global
>>> > Interpreter Lock, which makes it single threaded on the actual op tree
>>> > walk (running your script logic, instead of system calls).
>>>
>> --
>> Joe Schaefer, Ph.D.
>> We only build what you need built.
>> <joe@sunstarsys.com>
>> 954.253.3732 <//954.253.3732>
>>
>>
>> --
> Joe Schaefer, Ph.D.
> We only build what you need built.
> <joe@sunstarsys.com>
> 954.253.3732 <//954.253.3732>
>
>
> --
Joe Schaefer, Ph.D.
We only build what you need built.
<joe@sunstarsys.com>
954.253.3732 <//954.253.3732>




--
Joe Schaefer, Ph.D.
We only build what you need built.
<joe@sunstarsys.com>
954.253.3732 <//954.253.3732>