Alfred Perlstein wrote:
* Ivan Voras <[EMAIL PROTECTED]> [080311 08:46] wrote:
During heavy postgresql load (pgbench), /var/log/messages registers
(multiple times) the following message:
"Approaching the limit on PV entries, consider increasing either the
vm.pmap.shpgperproc or the vm.pmap.pv_entry_max sysctl"
I'm increasing both, but no matter what I increase them to, after a
short time they again get increased by the system (???).
The values are currently:
vm.pmap.shpgperproc: 1134
vm.pmap.pv_entry_max: 8000000
But the last sysctl setting, verified by retrieving it from my shell
command line history, is that I set vm.pmap.shpgperproc to 800.
Is this normal, and what are the common settings for these values? The
machine is 2x4-core, currently 4 GB RAM (which will increase to at least
6 GB), amd64, running postgresql, php and apache.
try setting:
sysctl kern.ipc.shm_use_phys=1
Could you please explain what that does and why?
Also could someone point me to where all these sysctls are documented
other than in the source code - which lots
of time has no explanation. It would really help the average sys admin/
user if these were documented.
Thanks,
Steve
--
"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety." (Ben Franklin)
"The course of history shows that as a government grows, liberty
decreases." (Thomas Jefferson)
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