oh .thanks i understand . but i still have a question . [root@pg1 pgdata]# uname -a Linux pg1 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Nov 6 15:06:03 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux [root@pg1 pgdata]# cat /etc/redhat-release CentOS Linux release 7.0.1406 (Core)
my os is centos7 . is there THP problem in it ? 657985...@qq.com From: Tom Lane Date: 2015-11-25 10:21 To: 657985...@qq.com CC: Kevin Grittner; Merlin Moncure; Bill Moran; pgsql-general Subject: Re: [GENERAL] ??: postgres cpu 100% need help "657985...@qq.com" <657985...@qq.com> writes: > thanks for you help . but the following config Indicate my OS THP is Disable > [root@pg1 ~]# grep -i HugePages_Total /proc/meminfo > HugePages_Total: 0 > [root@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