Difference between revisions of "Memory"
From Alessandro's Wiki
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* I hade to tune this setting on a high traffic Postgresql server: | * I hade to tune this setting on a high traffic Postgresql server: | ||
vm.overcommit_memory = 2 | vm.overcommit_memory = 2 | ||
* | * 0 (default):'' as before: guess about how much overcommitment is reasonable,'' | ||
* 1: never refuse any malloc(), | * 1:'' never refuse any malloc(),'' | ||
* 2: be precise about the overcommit '' | * 2:'' be precise about the overcommit '' | ||
== which kind of memory is installed? == | |||
lshw -short -C memory | |||
<pre> | |||
/0/1c/0 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/1 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/2 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/3 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/4 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/5 memory DIMM DDR2 Synchronous 667 MHz (1.5 ns) [empty] | |||
/0/1c/6 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) | |||
/0/1c/7 memory DIMM DDR2 Synchronous 667 MHz (1.5 ns) [empty] | |||
</pre> | |||
Latest revision as of 14:40, 4 April 2014
top10 processes using moemory
ps auxh | sort -r --key=4 | head -5
Overcommit
- I hade to tune this setting on a high traffic Postgresql server:
vm.overcommit_memory = 2
- 0 (default): as before: guess about how much overcommitment is reasonable,
- 1: never refuse any malloc(),
- 2: be precise about the overcommit
which kind of memory is installed?
lshw -short -C memory
/0/1c/0 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/1 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/2 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/3 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/4 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/5 memory DIMM DDR2 Synchronous 667 MHz (1.5 ns) [empty] /0/1c/6 memory 512MiB DIMM DDR2 Synchronous 667 MHz (1.5 ns) /0/1c/7 memory DIMM DDR2 Synchronous 667 MHz (1.5 ns) [empty]
