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From: Zach Brown <zach.brown@oracle.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
	linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Ulrich Drepper <drepper@redhat.com>,
	Arjan van de Ven <arjan@infradead.org>,
	Andrew Morton <akpm@zip.com.au>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Evgeniy Polyakov <johnpol@2ka.mipt.ru>,
	"David S. Miller" <davem@davemloft.net>,
	Suparna Bhattacharya <suparna@in.ibm.com>,
	Davide Libenzi <davidel@xmailserver.org>,
	Jens Axboe <jens.axboe@oracle.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Dan Williams <dan.j.williams@gmail.com>,
	Jeff Moyer <jmoyer@redhat.com>,
	Simon Holm Thogersen <odie@cs.aau.dk>,
	suresh.b.siddha@intel.com
Subject: Re: [PATCH 5/6] syslets: add generic syslets infrastructure
Date: Wed, 09 Jan 2008 15:47:50 -0800	[thread overview]
Message-ID: <47855D26.30307@oracle.com> (raw)
In-Reply-To: <alpine.LFD.1.00.0801091423160.3148@woody.linux-foundation.org>

Linus Torvalds wrote:
> 
> On Thu, 10 Jan 2008, Rusty Russell wrote:
>> I'd have to read his original statement, but eventfd doesn't build up state, 
>> so I think it qualifies.
> 
> How about you guys battle it out by giving an example program usign the 
> interface?
> 
> Here's a favourite really simple load of mine:
> 
>  - do the equivalent of "ls -lR" or "find /usr" as quickly as possible, 
>    without playing "sort by the inode numbers" games (that don't work in 
>    general, but are great for some filesystems)
> 
>    Do this on a directory that isn't newly created, but has had files 
>    added and removed over time (so that the return order of "readdir()" 
>    isn't dense and sorted in the inode tables already). The classic 
>    example is "ls -l /usr/bin" or similar.

Sure, that's straight forward enough.  We've all written little test
apps for variants of this load in the past, anyway.  (It was one of the
first things I did for fibrils, Ingo had a variant for syslets which
read small file data too, Chris has a syslet mode in his 'acp' util, etc.)

I was going to send out a patch series pretty soon which includes
cleanups (I think) of the sys_indirect() infrastructure.  I can throw
together this little test app along with that.

- z

  parent reply	other threads:[~2008-01-09 23:48 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-06 23:20 syslets v7: back to basics Zach Brown
2007-12-06 23:20 ` [PATCH 1/6] indirect: use asmlinkage in i386 syscall table prototype Zach Brown
2007-12-06 23:20   ` [PATCH 2/6] syslet: asm-generic support to disable syslets Zach Brown
2007-12-06 23:20     ` [PATCH 3/6] syslet: introduce abi structs Zach Brown
2007-12-06 23:20       ` [PATCH 4/6] syslets: add indirect args Zach Brown
2007-12-06 23:20         ` [PATCH 5/6] syslets: add generic syslets infrastructure Zach Brown
2007-12-06 23:20           ` [PATCH 6/6] syslets: add both 32bit and 64bit x86 syslet support Zach Brown
2007-12-07 11:55           ` [PATCH 5/6] syslets: add generic syslets infrastructure Evgeniy Polyakov
2007-12-07 18:24             ` Zach Brown
2008-01-09  2:03           ` Rusty Russell
2008-01-09  3:00             ` Zach Brown
2008-01-09  3:48               ` Rusty Russell
2008-01-09 18:16                 ` Zach Brown
2008-01-09 22:04                   ` Rusty Russell
2008-01-09 22:58                     ` Linus Torvalds
2008-01-09 23:05                       ` Linus Torvalds
2008-01-09 23:47                       ` Zach Brown [this message]
2008-01-10  1:18                       ` Rusty Russell
2008-01-09 23:15                     ` Davide Libenzi
2008-01-10  5:41                   ` Jeff Garzik
2007-12-08 12:40   ` [PATCH 1/6] indirect: use asmlinkage in i386 syscall table prototype Simon Holm Thøgersen
2007-12-08 21:22     ` Zach Brown
2007-12-08 12:52 ` [PATCH] Fix casting on architectures with 32-bit pointers/longs Simon Holm Thøgersen
2007-12-10 19:46 ` syslets v7: back to basics Jens Axboe
2007-12-10 21:30 ` Phillip Susi
2007-12-10 22:15   ` Zach Brown

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