Date: Fri, 31 Oct 2003 15:21:18 -0500 From: Vivek Pai <vivek@CS.Princeton.EDU> To: Mike Silbersack <silby@silby.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Some mmap observations compared to Linux 2.6/OpenBSD Message-ID: <3FA2C43E.3030204@cs.princeton.edu> References: <1066789354.21430.39.camel@boxster.onthenet.com.au> <20031022082953.GA69506@rot13.obsecurity.org> <1066816287.25609.34.camel@boxster.onthenet.com.au> <20031022095754.GA70026@rot13.obsecurity.org> <1066820436.25609.93.camel@boxster.onthenet.com.au> <xzpk76sc425.fsf@dwp.des.no> <1067183332.3f9bece4c0cf4@webmail.cs.princeton.edu> <20031026121527.K2023@odysseus.silby.com>
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Before we proceed on this, I'd like to ask is there actuall a committer ready to follow up on this? We currently make our patches available on Ping's homepage, and they're relatively clean. He spent a fair bit of time getting it from a relatively ugly set of changes to something more elegant and better integrated with the rest of the kernel. However, even with the benchmark success that we've gotten (which Aniruddha Bohra mentioned in a different e-mail), we haven't had a single nibble from a committer. FreeBSD lags Linux badly on the SpecWeb99 benchmarks, and those are probably more representative than some arbitrary microbenchmark. It would be nice to get some respectable numbers on it, especially if we could do it with a stable user-space server. -Vivek Mike Silbersack wrote: > On Sun, 26 Oct 2003 vivek@CS.Princeton.EDU wrote: > > >>Details about what we have so far are at >>http://www.cs.princeton.edu/~yruan/debox/ >> >>Yaoping Ruan had mentioned this on the list before (and sent a >>pointer to the sendfile patches), but didn't seem to get much >>response. >> >>-Vivek > > > As always, you're seeing the lack of available committer time, not a real > lack of interest. One way to accelerate the process might be for someone > (not necessarily you, any reader of this mailing list could do it) to show > that this change visibly benefits some easy to run benchmark. Some simple > setup of apachebench vs thttpd (which uses sendfile, afaik) would be > useful for this purpose. > > Mike "Silby" Silbersack >
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