Re: ??: postgres cpu 100% need help

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "657985552(at)qq(dot)com" <657985552(at)qq(dot)com>
Cc: "Kevin Grittner" <kgrittn(at)gmail(dot)com>, "Merlin Moncure" <mmoncure(at)gmail(dot)com>, "Bill Moran" <wmoran(at)potentialtech(dot)com>, pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: ??: postgres cpu 100% need help
Date: 2015-11-25 02:21:21
Message-ID: 8397.1448418081@sss.pgh.pa.us
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"657985552(at)qq(dot)com" <657985552(at)qq(dot)com> writes:
> thanks for you help . but the following config Indicate my OS THP is Disable
> [root(at)pg1 ~]# grep -i HugePages_Total /proc/meminfo
> HugePages_Total: 0
> [root(at)pg1 ~]# cat /proc/sys/vm/nr_hugepages
> 0

Those values reflect whether *explicit* huge pages are enabled. They do
not control *transparent* huge pages.

Red Hat's version of all this is documented here:
https://access.redhat.com/solutions/46111

regards, tom lane

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