Re: [Hardhats-members] Changeing/Activating PORT 9200 on the VistaLinuxServer

[Gregory Woodhouse]

Okay, just one more response. When you get right down to it, the  
point I was trying to make is that polling in basically I/O (even if  
the "device" you are reading is shared memory) and I/O is expensive,  
much more so than most people (including programmers) realize. The  
nice thing about asynchronous I/O (not supported in standard MUMPS)  
is that it eliminates the need for "almost busy" waiting, and instead  
uses asynchronous notification mechanisms (like signals) to notify a  
process when a device has become ready. This is not exactly the same  
issue, but trying to read from a socket periodically in hopes that  
data will be available is particularly bad.

===
Gregory Woodhouse
[EMAIL PROTECTED]

"The most profound technologies are those that disappear."
--Mark Weiser



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