Re: [HACKERS] Kernel Tainted

2016-10-05 Thread reiner peterke
> On Oct 5, 2016, at 9:43 PM, Tomas Vondra wrote: > > On 10/05/2016 08:41 PM, reiner peterke wrote: >> Hi, >> >> We are helping a client test an application On Power8 using Postgres >> 9.5.4 which has been compiled specifically for the Power. >> >&

[HACKERS] Kernel Tainted

2016-10-05 Thread reiner peterke
Hi, We are helping a client test an application On Power8 using Postgres 9.5.4 which has been compiled specifically for the Power. This is running on sles12sp1 the current kernel is 3.12.49-11 We are getting these kernel warning associated with the postmaster process. The application is hand

Re: [HACKERS] Problems with huge_pages and IBM Power8

2016-04-13 Thread reiner peterke
> On Apr 12, 2016, at 10:26 PM, Tom Lane wrote: > > Andres Freund writes: >> On 2016-04-12 21:58:14 +0200, reiner peterke wrote: >>> Looking for some insight into this issue. the error from the postgres >>> log on ubuntu is below. It apperas to be related to

Re: [HACKERS] Problems with huge_pages and IBM Power8

2016-04-12 Thread reiner peterke
> On Apr 12, 2016, at 10:20 PM, Andres Freund wrote: > > On 2016-04-12 21:58:14 +0200, reiner peterke wrote: >> Hi >> >> We have been doing some testing with Postgres (9.5.2) compiled on a Power8 >> running Centos 7 >> >> When working

[HACKERS] Problems with huge_pages and IBM Power8

2016-04-12 Thread reiner peterke
Hi We have been doing some testing with Postgres (9.5.2) compiled on a Power8 running Centos 7 When working with huge_pages, we initially got this error. munmap(0x3efbe400) failed: Invalid argument after a bit of investigation we noticed that hugepagesize is har coded to 2MB src/backend/p