1 Jul 2010 02:11
Re: Why is NFSv4 so slow? (root/toor)
Rick Macklem <rmacklem <at> uoguelph.ca>
2010-07-01 00:11:42 GMT
2010-07-01 00:11:42 GMT
On Wed, 30 Jun 2010, Ian Smith wrote:
>
> I wondered whether this might be a Linux thing. On my 7.2 system,
>
> % find /usr/src -name "*.[ch]" -exec grep -Hw getpwuid {} \; > file
>
> returns 195 lines, many in the form getpwuid(getuid()), in many base and
> contrib components - including id(1), bind, sendmail etc - that could be
> nondeterministic if getpwuid(0) ever returned other than root.
>
> Just one mention of 'toor' in /usr/src/usr.sbin/makefs/compat/pwcache.c
>
> Not claiming to know how the lookups in /usr/src/lib/libc/gen/getpwent.c
> work under the hood, but this does seem likely a non-issue on FreeBSD.
>
I remember it causing some confusion while testing, but I can't remember
when or where. It might have been Linux or I might have been logged in as
"toor" or ????
I think I will hardcode the "root" case in nfsuserd, just to be safe.
(I also migt have editted /etc/passwd and reordered entries without
paying attention to it.)
rick
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It's a matter of demographic -- Dell often caters to home/residential
users, while Supermicro caters to engineers, SAs, and other highly
technical folk. The latter excludes "gamers" or "tech forum freaks";
these two rarely, if ever, actually program or interface with the
devices or chips they're talking about. Speculation on my part, but I'm
sure if you Google for "ICH8 ACHI" you'll find hundreds of posts on
random forums, and most of these posts will do nothing but confuse. 
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