Infrequently used, running Java Chatbot app - slow to respond to a new request

[Philip Rhoades]

People,

I have an infrequently used Java chatbot app - mostly accessed from 
here:

   https://www.facebook.com/PhiRhoChat

which connects with the chatbot running on my Fedora 25 x86_64 server.

Because it is infrequently used, it appears that Java is caching most of 
the app to disk.  When I start a new conversation I can hear the disk in 
the server next to me churning and it takes some time before I get a 
response from the bot - and also the delay seems to be causing problems 
between FB and the bot on my server causing messages to be repeated etc.

Is there some way to force the OS to NOT disk cache the Java app so that 
it will always respond as quickly as possible - even if there are long 
periods between chats?

Thanks,

Phil.
-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  phil(a)pricom.com.au

[Bill Chatfield]

That is a very interesting question. I don't know the answer and I fear there is not a
way to do it, but I like to know if there is. I assume you're talking about a
server-side Java app with servlets/jsps rather than an applet? I think you mean that
it's swapping to disk. If there were a cache involved, it would speed up the process.


    On Tuesday, May 16, 2017 1:23 PM, Philip Rhoades <phil(a)pricom.com.au&gt; wrote:
 

 People,

I have an infrequently used Java chatbot app - mostly accessed from 
here:

  https://www.facebook.com/PhiRhoChat

which connects with the chatbot running on my Fedora 25 x86_64 server.

Because it is infrequently used, it appears that Java is caching most of 
the app to disk.  When I start a new conversation I can hear the disk in 
the server next to me churning and it takes some time before I get a 
response from the bot - and also the delay seems to be causing problems 
between FB and the bot on my server causing messages to be repeated etc.

Is there some way to force the OS to NOT disk cache the Java app so that 
it will always respond as quickly as possible - even if there are long 
periods between chats?

Thanks,

Phil.
-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  phil(a)pricom.com.au
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