From: Mark Lord <lkml@rtr.ca>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Ingo Molnar <mingo@elte.hu>, Jens Axboe <jens.axboe@oracle.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Theodore Tso <tytso@mit.edu>,
Linux Kernel Developers List <linux-kernel@vger.kernel.org>,
Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: [GIT PULL] Ext3 latency fixes
Date: Tue, 07 Apr 2009 09:31:37 -0400 [thread overview]
Message-ID: <49DB55B9.7030108@rtr.ca> (raw)
In-Reply-To: <20090406215034.GD3797@csclub.uwaterloo.ca>
Lennart Sorensen wrote:
> On Sat, Apr 04, 2009 at 10:18:20PM +0200, Ingo Molnar wrote:
>> btw., just to insert some hard data: usability studies place the
>> acceptance threshold for delays to around 300 milliseconds.
>>
>> If the computer does not 'respond' (in a real or a fake, visible or
>> audible way) to their input within 0.3 seconds they get annoyed
>> emotionally.
>
> You mean like hitting 'skip commercial' on the remote, and 2 minutes later
> when the commercials are almost over, then it happens. Yeah users get a
> bit peeved at that. Fortunately that particularly behaviour is somewhat
> rare. 5 to 10 seconds is more common and sometimes it works fine.
..
I generally don't see any delay at all when doing that,
even when the Mythtv system is very busy on multiple recordings.
But then, I also don't use the huge LIRC stack for the simple R/C either.
cheers
next prev parent reply other threads:[~2009-04-07 13:31 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-03 7:01 [GIT PULL] Ext3 latency fixes Theodore Ts'o
2009-04-03 7:01 ` [PATCH 1/4] block_write_full_page: Use synchronous writes for WBC_SYNC_ALL writebacks Theodore Ts'o
2009-04-03 7:01 ` [PATCH 2/4] ext3: Use WRITE_SYNC for commits which are caused by fsync() Theodore Ts'o
2009-04-03 7:01 ` [PATCH 3/4] ext3: Add replace-on-truncate hueristics for data=writeback mode Theodore Ts'o
2009-04-03 7:01 ` [PATCH 4/4] ext3: Add replace-on-rename " Theodore Ts'o
2009-04-03 15:01 ` EXT4 in embedded systems Nick Hennenfent (nhennefe)
2009-04-03 16:06 ` Eric Sandeen
2009-04-03 17:15 ` Nick Hennenfent (nhennefe)
2009-04-03 18:24 ` [GIT PULL] Ext3 latency fixes Linus Torvalds
2009-04-03 18:47 ` Jens Axboe
2009-04-03 19:13 ` Theodore Tso
2009-04-03 21:01 ` Chris Mason
2009-04-03 19:02 ` Linus Torvalds
2009-04-03 20:41 ` Linus Torvalds
2009-04-04 13:57 ` Theodore Tso
2009-04-04 15:16 ` Jens Axboe
2009-04-04 15:57 ` Linus Torvalds
2009-04-04 16:06 ` Linus Torvalds
2009-04-04 17:36 ` Jens Axboe
2009-04-04 17:34 ` Jens Axboe
2009-04-04 17:44 ` Linus Torvalds
2009-04-04 18:00 ` Trenton D. Adams
2009-04-04 18:01 ` Jens Axboe
2009-04-04 18:10 ` Linus Torvalds
2009-04-04 23:22 ` Theodore Tso
2009-04-04 23:33 ` Arjan van de Ven
2009-04-05 0:10 ` Theodore Tso
2009-04-05 15:05 ` Arjan van de Ven
2009-04-05 17:01 ` Linus Torvalds
2009-04-05 17:15 ` Mark Lord
2009-04-05 20:57 ` Jeff Garzik
2009-04-05 23:48 ` Arjan van de Ven
2009-04-06 2:32 ` Mark Lord
2009-04-06 5:47 ` Jeff Garzik
2009-04-07 18:18 ` Linus Torvalds
2009-04-07 18:22 ` Linus Torvalds
2009-04-07 19:40 ` [PATCH libata: add SSD detection hueristic; move SSD setup to ata_dev_configure (was Re: [GIT PULL] Ext3 latency fixes) Jeff Garzik
2009-04-09 18:21 ` Tejun Heo
2009-04-18 3:02 ` George Spelvin
2009-04-06 8:13 ` [GIT PULL] Ext3 latency fixes Jens Axboe
2009-04-05 18:56 ` Arjan van de Ven
2009-04-05 19:34 ` Linus Torvalds
2009-04-05 20:06 ` Arjan van de Ven
2009-04-06 6:25 ` Jens Axboe
2009-04-06 6:05 ` Theodore Tso
2009-04-06 6:23 ` Jens Axboe
2009-04-06 8:16 ` Jens Axboe
2009-04-06 14:48 ` Linus Torvalds
2009-04-06 15:09 ` Jens Axboe
2009-04-06 6:15 ` Jens Axboe
2009-04-04 20:18 ` Ingo Molnar
2009-04-06 21:50 ` Lennart Sorensen
2009-04-07 13:31 ` Mark Lord [this message]
2009-04-07 14:48 ` Lennart Sorensen
2009-04-07 19:21 ` Mark Lord
2009-04-07 19:57 ` Lennart Sorensen
2009-04-04 20:56 ` Arjan van de Ven
2009-04-06 7:06 ` Jens Axboe
2009-04-07 15:39 ` Indan Zupancic
2009-04-04 19:18 ` Theodore Tso
2009-04-06 8:12 ` Jens Axboe
2009-04-04 22:13 ` Linus Torvalds
2009-04-04 22:19 ` Linus Torvalds
2009-04-05 0:20 ` Theodore Tso
2009-04-03 19:54 ` Theodore Tso
-- strict thread matches above, loose matches on Subject: below --
2009-04-08 23:40 Theodore Ts'o
2009-04-09 15:49 ` Linus Torvalds
2009-04-09 16:23 ` Chris Mason
2009-04-09 17:49 ` Jan Kara
2009-04-09 18:10 ` Chris Mason
2009-04-09 19:04 ` Jan Kara
2009-04-09 17:36 ` Jan Kara
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