Re: Please help me tune NetBSD for bulk.fefe.de/scalability/

* Niels Provos <[email protected]> [031027 09:15] wrote:
> On Fri, Oct 24, 2003 at 04:21:36PM +0200, Felix von Leitner wrote:
> > Please also tell me if you have suggestions for other benchmarks that
> > say something about the scalability of an operating system, that I could
> > (and should) include in my benchmark suite.
> 
> Well, I guess that the standard file discriptor allocation benchmark is
> still missing.  It sort of works like this:
> 
> 1. Allocate n files, (just open /dev/null)
> 2. Close file[1]
> 3. Close file[n] or close a file randomly
> 4. Measure the time that it takes to open two files.
> 
> There is an old paper from Mogul in which he identifies file descriptor
> allocation as one of the bottleneck of web servers.

I thought it would be interesting to add a sysctl or syscall that told
the system "i don't need the next lowest free descriptor, any will do"
so that applications could use that.

Problem is does Libc need it?

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