On 2/2/2015 12:58 PM, Jay McCarthy wrote:
I think 80MB is pretty typical. If you convert to "#lang web-server",
you should be able to trade RAM for disk space, but I doubt you could
get less than 40MB and 80MB out of 512M is pretty decent.
Jay
Would that difference all be from not caching continuations, or is there
something else?
On a related note, does sharing a file through *#:servlet-namespace*
actually save memory, or is it just about putting names into the
custodian environment? I'm a bit unclear as to whether custodians
really manage code (ala Java loaders) or just namespaces. I have a
couple of large utility files shared this way, but since I still have to
require them everywhere and you have mentioned previously (IIUC) that
servlet instances run under separate custodians, I am wondering just how
it works.
Thus far I've been using #lang racket. I haven't bumped into memory
limitations, but the executable footprint (resident+swap) is ~260MB and
growing. Currently I have no continuation servlets - all are run to
completion - and so right now I have *#:stateless? #t* and *#:manager
(create-none-manager #f) * in the call to serve/servlet, but there are
43 servlets and counting, plus several auxiliary threads and a
large(ish) dbms connection pool. Probably the number of servlets will
double before I'm done. I have managed to avoid using continuations via
SQL wizardry, but I don't know how far I can push that - the web
designer keeps wanting to shift more session management responsibility
onto the server side.
I haven't played with #lang web-server at all, so forgive me if these
are stupid questions:
Where I have servlets that share auxiliary functions I have grouped them
together in a single source file. From the docs it appears that the
(provide version stuffer start) 3 argument form is special vs the
normal n-argument module provide. Can there be multiple web language
servlets with different specs provided from a single source file?
Does switching to the web language impact using serve/servlet and
dispatch-rules?
Can web language and racket language servlets be mixed in the same
application (gradual transition) or is it all or nothing?
Thanks,
George
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