From: Patrick McHardy <kaber@trash.net>
To: Jarek Poplawski <jarkao2@o2.pl>
Cc: netdev@vger.kernel.org, shemminger@osdl.org
Subject: Re: [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate
Date: Tue, 16 Jan 2007 13:28:52 +0100 [thread overview]
Message-ID: <45ACC504.4060208@trash.net> (raw)
In-Reply-To: <20070116110244.GB1003@ff.dom.local>
Jarek Poplawski wrote:
> On Tue, Jan 16, 2007 at 11:19:34AM +0100, Patrick McHardy wrote:
> ...
>
>>Right, this changes it from long (tc_core_usec2tick) to unsigned
>>int. It doesn't make any difference though, ...
>
>
> ... if we count out reading_time_2tick, of course.
And this is a problem why? In the worst case (NET_SCH_CLK_CPU,
max rate 1/0.5us) it allows us to represent a transmission time
of 2^32/1000000/2s (where 2 is tick_in_usec), which is roughly
2147s.
If you still have doubts, please use numbers to demonstrate the
problem.
next prev parent reply other threads:[~2007-01-16 12:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-10 10:01 [IPROUTE 00/05]: Time cleanups Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate Patrick McHardy
2007-01-16 8:56 ` Jarek Poplawski
2007-01-16 10:19 ` Patrick McHardy
2007-01-16 11:02 ` Jarek Poplawski
2007-01-16 12:28 ` Patrick McHardy [this message]
2007-01-16 12:48 ` Jarek Poplawski
2007-01-10 10:01 ` [IPROUTE 02/05]: Introduce tc_calc_xmitsize and use " Patrick McHardy
2007-01-15 12:35 ` Jarek Poplawski
2007-01-15 15:07 ` Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 03/05]: Introduce TIME_UNITS_PER_SEC to represent internal clock resolution Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 04/05]: Replace "usec" by "time" in function names Patrick McHardy
2007-01-15 10:17 ` Jarek Poplawski
2007-01-16 13:42 ` Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 05/05]: Add sprint_ticks() function and use in CBQ Patrick McHardy
-- strict thread matches above, loose matches on Subject: below --
2006-06-23 18:06 [RFC IPROUTE 00/05]: Time cleanups Patrick McHardy
2006-06-23 18:06 ` [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate Patrick McHardy
2006-06-23 18:28 ` Patrick McHardy
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