| From: | "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> |
|---|---|
| To: | "PostgreSQL Hackers" <pgsql-hackers(at)postgresql(dot)org>, "Neil Conway" <neilc(at)samurai(dot)com> |
| Subject: | Re: xBSD shmem doc deficiency |
| Date: | 2002-11-21 19:18:20 |
| Message-ID: | 00cd01c29192$c0d766f0$6600a8c0@internal |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi Neil,
> However, the FreeBSD box I'm playing with isn't mine, so I'm not too
> keen to change sysctls (well, that and I don't have root :-) ). Would
> a kind BSD user confirm that:
>
> (a) the sysctls above *can* be used to change kernel shared
> memory settings, and the default value of the sysctl is
> the kernel option referred to in the docs.
Unless this has changed in 4.7, lots of those shm sysctls are
read-only...ie. you cannot set the shared memory pool size at runtime. I'll
look at it again tho.
> (c) the 'prevent shared memory paging' sysctl vaguely referred
> to in the docs is 'kern.ipc.shm_use_phys', right?
I'll have to investigate that one...
Chris
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