panic on server w/ 3GB RAM

[Salmaan Ahmed]

We are running a custom webserver application along with squid on a
couple of Dell PowerEdge dual processor boxes.  They ran fine for weeks
with 2GB of RAM but once we increased it to 3GB of RAM we continually
get kernel panics...

Does anyone know if there is a problem with FreeBSD, 3GB of RAM, and the
motherboard on the Dell PowerEdge servers?  Is there a workaround?

TIA,
Salmaan


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.text area copy-on-write (COW)

[Salmaan Ahmed]

I'm trying to determine just how much *physical* memory is required by
one of my programs.  I have a simple program with a .text size of about
1.7MB and, when running, a resident memory size of about 2.3MB.  So far
so good.  What I don't understand is that when this program fork()s,
shouldn't the .text area be shared between parent and child (actually,
shouldn't both .text and .data be shared until modified)?  If so, then
why does the child process also have a resident memory (RES under
top) of 2.2MB instead of 600k?

Am I misreading top? Is there some other way of determining the amount
of physical memory being used by a process?

Salmaan


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