Re: php cli question

On Tue, Sep 14, 2010 at 1:15 PM, Per Jessen <per@computer.org> wrote: > J Ravi Menon wrote: > >> On Tue, Sep 14, 2010 at 12:43 AM, Per Jessen <per@computer.org> wrote: >>> J Ravi Menon wrote: >>> >>>> Few questions: >>>> >>>> 1) Does opcode cache really matter in such cli-based daemons? As >>>> 'SomeClass' is instantiated at every loop, I am assuming it is only >>>> compiled once as it has already been 'seen'. >>> >>> Yup. >> >> Just to clarify, you mean we don't need the op-code cache here right? > > That is correct. > >>>> 2) What about garbage collection? In a standard apache-mod-php >>>> setup, we rely on the end of a request-cycle to free up resources - >>>> close file descriptiors, free up memory etc.. >>>> I am assuming in the aforesaid standalone daemon case, we would >>>> have to do this manually? >>> >>> Yes. >> >> So 'unset($some_big_array)'  or 'unset($some_big_object)' etc.. is the >> right way to go for non-resource based items? i.e. it needs to be >> explicitly done? > > It's not quite like C - if you reassign something, the previous contents > are automagically freed.  I use unset() if I know it could be a while > (hours) before it'll likely be reassigned, but it won't be used in the > meantime. > Thanks Per for clarifying this for me. Now on my follow up question: [Note: I think it is related to the issues discussed above hence keeping it on this thread but if I am violating any guidelines here, do let me know] One reason the aforesaid questions got triggered was that in our company right now, there is a big discussion on moving away from apache+mod_php solution to nginx+fast-cgi based model for handling all php-based services. The move seems to be more based some anecdotal observations and possibly not based on a typical php-based app (i.e. the php script involved was trivial one acting as some proxy to another backend service). I have written fast-cgi servers in the past in C++, and I am aware how the apahce<---->fast-cgi-servers work (in unix socket setups). All our php apps are written with apache+mod_php in mind (no explicit resource mgmt ), so this was a concern to me. If the same scripts now need to run 'forever' as a fastcgi server, are we forced to do such manual resource mgmt? Or are there solutions here that work just as in mod_php? This reminded me of the cli daemons that I had written earlier where such manual cleanups were done, and hence my doubts on this nginx+fast-cgi approach. thx, Ravi > > > -- > Per Jessen, Zürich (14.6°C) > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >