Inconsistent Integration Builder browser performance

Question

We've been experiencing poor IB performance.  When launching transaction SXMB_IFR, sometimes the browser can take 2 minutes or more to load the page.  Other times, the page comes right up (<2sec).  All links (SLD, RWB, Admin, etc...) experience the same slow or fast load times (but they do work).  The native SAP GUI transactions run fine, and once the Int Rep and Int Dir load, they run fine also.
I've checked SM59 entries, refreshed caches, run various checks (SLDCHECK), refreshed/closed browser, rebooted, read install and config guides, read a million posts/blogs, etc...  but nothing seems to directly impact the performance.
I'm guessing it's something internal to our network, but I have no clue how to isolate the problem.
Any ideas?
XI box is a Sun e10k w/8gigs of RAM and 8 400Mhz CPUs (yeah it's old, but we're not asking much of it either)
Thanks in advance,
Brian

Answer 1

You can try:  http://server:port/index.html
if you get equally bad response, then it is your network.  You will need to check with your network administrator to track down where the bottleneck is.
If you get good response with the above URL, but bad response opening up the Int Builder or SLD or RWB, then it is probably the J2EE server is busy.  Your basis administrator can help you find which J2EE service(s) are taking up the resources.
Good luck!
Regards,
Bill