From: Jim Gettys <jg@freedesktop.org>
To: David Lang <david@lang.hm>
Cc: Richard Smith <smithbone@gmail.com>,
"cerowrt-devel@lists.bufferbloat.net"
<cerowrt-devel@lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] solar wifi ap designs?
Date: Mon, 5 Jun 2017 16:26:23 -0400 [thread overview]
Message-ID: <CAGhGL2Bz5b80MLZ1GMrX5YJGwnkJ+WG=dbeJ6A5T2n+QUjnNqA@mail.gmail.com> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.1706051319400.10272@qynat-yncgbc>
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On Mon, Jun 5, 2017 at 4:20 PM, David Lang <david@lang.hm> wrote:
> On Mon, 5 Jun 2017, Richard Smith wrote:
>
> My WNDR 3700v2 power supply is rated at 12V 2.5A which is a peak of 30W.
>>
>
> don't forget that this includes providing power out to the USB port as
> well.
>
> yet another reason to measure things :-)
USB places (placed?) multiple second latencies on suspend/resume as well.
This makes it really hard to do decent high speed power management on an
operating system. Linux itself we measured on an iPAQ at 20ms latency to
suspend resume. Then when you had a USB port, it took of order a second
(to get the best power management on OLPC we had to disable USB entirely).
Have I said how much I hate USB?
- Jim
>
> David Lang
> k
>
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel
>
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next prev parent reply other threads:[~2017-06-05 20:26 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-05 0:49 Dave Taht
2017-06-05 1:54 ` Aaron Wood
2017-06-05 2:03 ` Dave Taht
2017-06-05 3:53 ` Aaron Wood
[not found] ` <148921.1496635376@turing-police.cc.vt.edu>
2017-06-05 4:27 ` Dave Taht
2017-06-05 13:12 ` Michael Richardson
2017-06-05 16:01 ` Richard Smith
2017-06-05 17:52 ` dpreed
2017-06-05 18:01 ` dpreed
2017-06-05 18:21 ` Jim Gettys
2017-06-05 18:53 ` Aaron Wood
2017-06-06 23:59 ` Christopher Robin
2017-06-09 14:02 ` Dave Taht
2017-06-13 11:52 ` Richard Smith
[not found] ` <CAPjrEw9FY9GU3XXMXDTi254nUUDdyVw22+9G-MKuT08ABtTJ9Q@mail.gmail.com>
2017-06-13 13:03 ` Christopher Robin
2017-06-13 16:25 ` Richard Smith
2017-06-13 17:25 ` Dave Taht
2017-06-13 21:09 ` Richard Smith
2017-06-05 20:20 ` David Lang
2017-06-05 20:26 ` Jim Gettys [this message]
2017-06-06 12:04 ` Richard Smith
2017-06-06 18:40 ` Richard Smith
2017-06-07 20:15 ` Michael Richardson
2017-06-05 21:51 ` Michael Richardson
2017-06-05 22:49 ` Joel Wirāmu Pauling
2017-06-06 2:00 ` Michael Richardson
2017-06-06 2:03 ` Jim Gettys
2017-06-06 12:04 ` Richard Smith
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