Re: Lockmeter Analysis of 2 DDs

From: lahr (lahr@us.ibm.com)
Date: Fri Sep 07 2001 - 12:04:56 EST

Next message: Stephan von Krawczynski: "Re: "Cached" grows and grows and grows..."
Previous message: Andreas Dilger: "Re: Basic reiserfs question"
In reply to: Peter Wong: "Re: Lockmeter Analysis of 2 DDs"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

> Indeed, io_request_lock is very hot once the bounce buffers were
> eliminated. Is anyone working on a patch for the io_request_lock that
> possibly take the global lock and splits it into a per device queue lock?
> We understand that getting this patch into 2.4 is unlikely, but it would
> be nice to have this patch available on 2.4 for experimental purposes.

I recently published a patch for 2.4 that addresses this exact issue at
http://lse.sourceforge.net/io/

Jonathan

-- Jonathan Lahr IBM Linux Technology Center Beaverton, Oregon lahr@us.ibm.com 503-578-3385

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

Next message: Stephan von Krawczynski: "Re: "Cached" grows and grows and grows..."
Previous message: Andreas Dilger: "Re: Basic reiserfs question"
In reply to: Peter Wong: "Re: Lockmeter Analysis of 2 DDs"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Fri Sep 07 2001 - 21:00:42 EST