memory allocation / performance tuning question

Hello world :-)

I have switched to a new machine recently (iCoreUltra9 96GB RAM 128GB
SWAP) with 14.3-RELEASE-p5 AMD64. But, just as on the older machine, I
still can see the issue that first run of bigger applications is a bit
slower and then application works relatively slow as compared to
killing the application and running again I can see improvement in
performance.

For instance right now starting vbox told me it cannot allocate
memory, while only 28GB RAM and 300MB of swap is in use. I have
unpaused vm and it went smooth ahead.

I suspect this may have something to do with memory allocation
settings? Maybe some other settings?

Is there a way to tune things ups?

Any hints welcome :-)
Tomek

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info