> At 05:56 PM 22-06-2001 -0400, Bruce Momjian wrote: > >> Bruce Momjian <[EMAIL PROTECTED]> writes: > >> Since 64 is already too much to let 7.1 fit in SHMMAX = 1MB, I think > >> the original rationale for using 64 is looking pretty broken anyway. > >> Comments? > > > >BSD/OS has a 4MB max but we document how to increase it by recompiling > >the kernel. Maybe if we fail the startup we can tell them how to > >decrease the buffers in postgresql.conf file. Seems quite clear. > > > > Why is SHMMAX so low on some O/Ses? What are the advantages? > > My guess is it's a minimum vs median/popular situation. Get the same thing > looking at the default www.kernel.org linux kernel settings vs the Redhat > kernel settings. > > I'd personally prefer the popular situation. But would that mean the > minimum case can't even boot up to recompile? Maybe the BSD guys should > ship with two kernels then. FreeBSD esp, since it's easy to recompile the > kernel, just do two, during installation default to "Regular", with an > option for "Tiny". > > It's more fair that the people trying the extraordinary (16MB 386) should > be the ones doing the extra work. I think the problem is that with a default-sized kernel, the little guys couldn't even boot the OS. Also, some of the OS's hard-wire things into the kernel for performance reasons. -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026 ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
