Re: Too Many Open Files... NetBSD - Mailing list pgsql-general

From Bruce Momjian
Subject Re: Too Many Open Files... NetBSD
Date
Msg-id 200112182223.fBIMNNO14296@candle.pha.pa.us
Whole thread Raw
In response to Too Many Open Files... NetBSD  ("Ian Harding" <ianh@tpchd.org>)
Responses Re: Too Many Open Files... NetBSD
List pgsql-general
> Argh.  I have finally come to the point where i have to pay attention to this nuts and bolts stuff.
>
> I get:  ERROR:  pltcl: couldn't create pipe: too many open files
>
> Is this the issue that requires setting options and recompiling my kernel like :
>
> <Bruce's article>
>
> FreeBSD
> NetBSD
> OpenBSD
> The options SYSVSHM and SYSVSEM need to be enabled when the kernel is compiled. (They are by default.) The maximum
sizeof shared memory is determined by the option SHMMAXPGS (in pages). The following shows an example of how to set the
variousparameters:  
>
> options         SYSVSHM
> options         SHMMAXPGS=4096
> options         SHMSEG=256
>
> options         SYSVSEM
> options         SEMMNI=256
> options         SEMMNS=512
> options         SEMMNU=256
> options         SEMMAP=256
> (On NetBSD and OpenBSD the key word is actually option singular.)
>
> </Bruce's article>
>
> It seems there is no easy way to tweak kernel memory configuration stuff in NetBSD.  Can someone with some experience
inthis help me out here?  Thanks!! 

OK, these are only for shared resources like system V shared memory and
semaphores.  Number of open files is controlled in a different way.

On my BSD/OS machine, sysctl allows you to control the maximum number of
open files.  The sysctl manual has:

     kern.maxfiles                          integer       yes

and the 'yes' indicates it can be changed via sysctl.  Perhaps NetBSD is
the same.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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