r41Beta3 and r41Beta4

[Chris Muller]

I've just posted two new configurations to the MagmaTester project of
SqueakSource.  It is a new beta for release 41 with several improvements:

	- An all-new performance and system-health monitoring package called
"Ma Statistics" has been added and utilized internally by all layers
of the Magma architecture.
	- Performance statistics for the last half-hour (hour, day, week,
your choice) are captured in five-minute (also adjustable) intervals.
Is the server taxed or loafing?  What was the average response time
for clients?  What was the longest response-time for any single
request for any client?  What was the average size of each response?
These and dozens of other statistics are now captured while the server
runs with no performance penalty.
	- The #statistics and #serverStatistics answers a rich domain of the
statistics for the MagmaSession and server, respectively.
User-interfaces to analyze Statistics domains could disrupt Magma
server performance, so should be run in client images.
	- Studying the output of this model after running a real-world Magma
application revealed an opportunity for optimization in the networking
layer ("Ma client server").  MaTcpRequestServers now maintain up to 50
simultaneous socket connections for significantly improved
performance, especially on low-bandwidth connections.

r41Beta3 actually goes one step further and compresses all ByteArrays
sent over the network using the LZ77 algorithm included in 3.9.  This
was an experiment to address a performance on applications with
heavily constrained network bandwidth.

However, the compression slows things down considerably on fast
networks, and r41Beta4 is the same exact code without the compression.
 Due to the other improvements it, too, still shows improved
performance on slow network connections.  So I'm moving forward
without compression at this point.

This release 41 has about execution performance.  It has already
brought 1000X improvements in simple query's and caching of the
prototocol for faster connection times.  Now it is still faster than
it ever has been, though that's not to say there will be no more
opportunities for further improvements.

Enjoy,
  Chris