In all the experiments I have seen (always on 1GB dual PentiumIII machines), Jetspeed degrades sharply at about 50 concurrent requests, and this has not changed in the last year. You could be seeing the same behaviour, but scaled to your CPU, RAM and architecture. I would try to use less concurrent requests (at a sustained rate) to test the limits. Try several hours with 20, then 50, etc. Also, notice that the server hotspot VM needs time to see hotspots and optimize them, and during method compilation it actually slows down the whole system.Yes, somewhat exact behavior I'm seeing. Below is the hardware config of our machine. We ramped up 1user every 10sec up to 100 users
and the 100 users stayed 30 mts executing bunch of portal actions. I see spikes at 28th minute with just a Hello World portlet. I'm also
investigating JDK1.4.x and Borland 5.x to see any cause. will post you with more information. thanks a lot
System Configuration: Sun Microsystems sun4u Sun Fire 280R (2 X UltraSPARC-III+)
System clock frequency: 150 MHz
Memory size: 4096 Megabytes
========================= CPUs ===============================================
Run E$ CPU CPU Brd CPU MHz MB Impl. Mask --- --- ---- ---- ------- ---- A 0 900 8.0 US-III+ 2.2 B 1 900 8.0 US-III+ 2.2
========================= Memory Configuration ===============================
Logical Logical Logical
MC Bank Bank Bank DIMM Interleave Interleaved
Brd ID num size Status Size Factor with
---- --- ---- ------ ----------- ------ ---------- -----------
CA 0 0 2048MB no_status 1024MB 2-way 0
CA 0 2 2048MB no_status 1024MB 2-way 0
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