From: "H. Peter Anvin" <hpa@zytor.com>
To: thockin@sun.com
Cc: "Ogden, Aaron A." <aogden@unocal.com>,
autofs@linux.kernel.org, Ian Kent <raven@themaw.net>
Subject: Re: RE: autofs scalability
Date: Thu, 04 Dec 2003 15:09:15 -0800 [thread overview]
Message-ID: <3FCFBE9B.6080807@zytor.com> (raw)
In-Reply-To: <20031204223733.GJ10772@sun.com>
Tim Hockin wrote:
>
> You either allocate 2^20 bits for every user, or you allocate it as needed
> (and handle alloc failures when they are least expected) or you sysctl it
> and let the admin decide early on whether she wants to allow large numbers
> of pseudo-devs.
>
I can't imagine that these are allocated left and center... it should
pretty much be mount and nothing else. So yes, it's some more
complexity but not really significant.
2^20 bits = 128K, which falls in the "it's a bit on the expensive side,
but doable" class.
Fixed limits suck. And yes, I'm also guilty of having put them in in
the past. They still suck.
-hpa
next prev parent reply other threads:[~2003-12-04 23:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-03 19:19 autofs scalability Ogden, Aaron A.
2003-12-03 19:43 ` Tim Hockin
2003-12-04 1:37 ` Ian Kent
2003-12-04 19:12 ` Tim Hockin
2003-12-04 20:04 ` H. Peter Anvin
2003-12-04 22:37 ` Tim Hockin
2003-12-04 23:09 ` H. Peter Anvin [this message]
2003-12-04 23:12 ` Tim Hockin
2003-12-03 20:01 ` Mike Waychison
2003-12-04 1:35 ` Ian Kent
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