Subject: Re: [HACKERS] PostgreSQL, NetBSD and NFS
To: None <email@example.com>
From: Tom Lane <firstname.lastname@example.org>
Date: 02/05/2003 15:45:11
Thor Lancelot Simon <email@example.com> writes:
>> Unless NetBSD has changed from its heritage, the kernel disk cache
>> buffers are 8K, and so an 8K NFS read or write would never cross a
>> cache buffer boundary. But 32K would.
> I don't know what "heritage" you're referring to, but it has never been
> the case that NetBSD's buffer cache has used fixed-size 8K disk buffers,
> and I don't believe that it was ever the case for any Net2 or 4.4-derived
Could be. By "heritage" I meant BSD-without-any-adjective. It is
perfectly clear from Leffler, McKusick et al. (_The Design and
Implementation of the 4.3BSD UNIX Operating System_) that back then,
8K was the standard filesystem block size.
However, I was just guessing that that might have anything to do with
the problem. It does seem clear now that we are looking at a kernel
or network bug, though.
regards, tom lane