| From: | Shaun Thomas <sthomas(at)optionshouse(dot)com> |
|---|---|
| To: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
| Cc: | Миша Тюрин <tmihail(at)bk(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: high io BUT huge amount of free memory |
| Date: | 2013-04-23 14:50:12 |
| Message-ID: | 51769FA4.1040502@optionshouse.com |
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| Lists: | pgsql-hackers |
On 04/22/2013 05:12 PM, Merlin Moncure wrote:
>> free -g
>> total used free shared buffers cached
>> Mem: 378 250 128 0 0 229
>> -/+ buffers/cache: 20 357
This is most likely a NUMA issue. There really seems to be some kind of
horrible flaw in the Linux kernel when it comes to properly handling
NUMA on large memory systems.
What does this say:
numactl --hardware
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-676-8870
sthomas(at)optionshouse(dot)com
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