Performance Problem

Dear managers,

a user process utilizing 2GB - 4GB of memory on a SF 490 (2 x SPARC IV,
16 GB) causes serious performance problems for all users. It looks like
much disk i/o is taking place. The performance problem goes away 1-2
minutes after killing the user process that consumed the 2GB - 4GB of
RAM. Since we have 16GB in the machine this should have no effect on
other users IMHO. No swapping should be performed since there is more
than enough physical memory to hold all process data in RAM.

What could be the problem? I heard that Solaris does not like greater
portion of RAM being occupied by a single process. Is that correct? Why?

Thanks a lot,

Andreas
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