Hi Gino,
Is it possible that UNIX sockets are being used instead of INET? That would eliminate the TCP and IP
protocol processing down and up the stack required for IPC. X Windowing System does that--if the
client and server are co-located, they don't create IP connections. With the web and DB servers in
different zones, they must use IP.
You can check by seeing how many network connections via netstat or they type of connections via
pfiles (the peername: would show AF_UNIX instead of AF_INET[6]).
Steffen
Gino Ruopolo wrote On 12/27/06 13:13,:
Hi all,
S10u2, 2 zones.
Zone A: higly optimized Apache+PHP serving about 1000 concurrent users
Zone B: MySQL database
We found that just moving the MySQL database from zone B to zone A reduce the
load of about 20% (system %cpu)!!
Why zones introduce so high overhead??
thanks,
Gino
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