Re: [CentOS] Why the huge shmmax default setting?

2013-12-18 Thread Woodchuck
On Tue, Dec 17, 2013 at 7:55 PM, John R Pierce pie...@hogranch.com wrote: On 12/17/2013 4:33 PM, Lists wrote: This large value doesn't really make sense to me - can somebody explain why the change to such a large value? its just a limit, it has no impact unless someone claims too much shared

[CentOS] Why the huge shmmax default setting?

2013-12-17 Thread Lists
Fresh load of Centos6/64 from new ISO (downloaded 2 weeks ago?) and getting set up with PostgreSQL, one of the typical steps is to increase shmmax from its normal, conservative value (eg: 32 MB or something) to something far more aggressive. But in recent installs of CentOS 6, this value is

Re: [CentOS] Why the huge shmmax default setting?

2013-12-17 Thread John R Pierce
On 12/17/2013 4:33 PM, Lists wrote: This large value doesn't really make sense to me - can somebody explain why the change to such a large value? its just a limit, it has no impact unless someone claims too much shared memory. the only place it makes sense to set it small is on a shared