Re: [naviserver-devel] Questions about NS details... (scalability, lib changes)

[Vlad S. <vl...@cr...>]

Some time ago i added writer feature to NS, when configured in nssock 
section as
ns_param writerthreads 2

NS will create 5 threads that will perform serving large files to the 
clients leaving connection threads to do dynamic parts. Those writer 
threads are serving multiple connections at the same time using aync IO, 
so no big overhead.

As for caching for adp, tcl, NS and AS do caching compiled ADP pages as 
well as compiled Tcl pages internally, you do not have to do anything 
except playing with config parameters that define cache size, see

cachesize in ns/server/$server/adp section

filecachesize in ns/server/$server section

Mike wrote:
> Two unrelated questions...
> 
> The project for which I am considering NS will have a dynamic and very
> large static part.  There will be many very large (650MB) static files
> that people will download.  It is hard for me to judge what the
> performance of serving these files with NS will be.  Of course
> benchmarking would be the ideal route, however I have the pleasure of
> writing the code now, and the hardware for this project won't be
> purchased until a while from now.  Should I use NS for the dynamic
> part and redirect the static requests to something like lighttpd, or
> can I rely on NS to handle such load without problems?
> 
> Does there exist a caching mechanism for dynamically generated tcl/adp
> pages?  If it does, where can I find docs for how it works/when the
> cache is invalidated?
> 
> Does a mechanism exist to "reload" the tcl libraries on a live server?
> 
> (please pardon all the questions, I'm just trying to get up to speed
> with what's in there)
> 
> 
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-- 
Vlad Seryakov
571 262-8608 office
vl...@cr...
http://www.crystalballinc.com/vlad/