| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Robert Haas <robertmhaas(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: Posix Shared Mem patch |
| Date: | 2012-07-03 15:41:09 |
| Message-ID: | 8133.1341330069@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Andres Freund <andres(at)2ndquadrant(dot)com> writes:
> Btw, RhodiumToad/Andrew Gierth on irc talked about a reason why sysv shared
> memory might be advantageous on some platforms. E.g. on freebsd there is the
> kern.ipc.shm_use_phys setting which prevents paging out shared memory and also
> seems to make tlb translation cheaper. There does not seem to exist an
> alternative for anonymous mmap.
Isn't that mlock()?
> So maybe we should make that a config option?
I'd really rather not. If we're going to go in this direction, we
should just go there.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Kohei KaiGai | 2012-07-03 15:42:17 | Re: User-Id Tracking when Portal was started |
| Previous Message | Tom Lane | 2012-07-03 15:36:42 | Re: User-Id Tracking when Portal was started |