memtest question on 8 GB RAM AMD64 system
dino_vliet at yahoo.com
Thu Apr 9 19:09:50 UTC 2009
Dear freebsd people,
I have just installed 4 x 2gb kingston memory banks (Kingston HyperX 4GB 800mhz DDR2 Non-ECC CL5 (5-5-5-15) DIMM) onto my AMD 64 system with a X2 5200 CPU. The motherboard I have in this system is MSI K9AG Neo2-Digital.
The system boots fine and I wanted to try memtest to see if there would be errors. So I installed that /usr/ports/sysutils/memtest port and did
# memtest 2400
The output I got is:
Continuing with unlocked memory; testing will be slower and less reliable.
pagesizemask is 0xfffffffffffff000
want 2400MB (2516582400 bytes)
got 2400MB (2516582400 bytes), trying mlock .......failed for unknown reason
In my /etc/rc/conf file I had added these lines in the past (when I had 4gb RAM installed in it)
sysctl -w kern.ipc.shmmax=1954311424
sysctl -w kern.ipc.shmall=238000
What is the case here? Why is memtest failing to use mlock? How can I eventually make sure I can run memtest with 8000mb?
The purpose of this machine is that it will be used for a various data intensive tasks where I need to be able to allocate as much memory possible. I am running a postgresql database server on it as well to store my source data.
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