From: Jussi Kivilinna <jussi.kivilinna@iki•fi>
To: Rick Jones <rick.jones2@hp•com>
Cc: Eric Dumazet <eric.dumazet@gmail•com>,
Jesper Dangaard Brouer <brouer@redhat•com>,
Stephen Hemminger <stephen@networkplumber•org>,
netdev <netdev@vger•kernel.org>
Subject: Re: [PATCH iproute2] htb: report overhead attribute
Date: Mon, 03 Jun 2013 22:50:10 +0300 [thread overview]
Message-ID: <51ACF372.9060607@iki.fi> (raw)
In-Reply-To: <51ACB9FE.1020100@hp.com>
On 03.06.2013 18:45, Rick Jones wrote:
> On 06/02/2013 02:33 PM, Eric Dumazet wrote:
>> From: Eric Dumazet <edumazet@google•com>
>>
>> "tc class show dev ..." omits the overhead attribute for HTB.
>>
>> After patch I have :
>>
>> tc class add dev $DEV parent 1: classid 1:1 est 1sec 4sec htb \
>> rate 12Mbit mtu 1500 quantum 1514 overhead 20
>>
>> tc class show dev $DEV
>> class htb 1:1 root prio 0 rate 12000Kbit overhead 20 ceil 12000Kbit
>> burst 1500b cburst 1500b
>>
>> Signed-off-by: Eric Dumazet <edumazet@google•com>
>> ---
>> tc/q_htb.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/tc/q_htb.c b/tc/q_htb.c
>> index caa47c2..e6b09bb 100644
>> --- a/tc/q_htb.c
>> +++ b/tc/q_htb.c
>> @@ -264,6 +264,8 @@ static int htb_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
>> fprintf(f, "quantum %d ", (int)hopt->quantum);
>> }
>> fprintf(f, "rate %s ", sprint_rate(hopt->rate.rate, b1));
>> + if (hopt->rate.overhead)
>> + fprintf(f, "overhead %u ", hopt->rate.overhead);
>
> Is it (still) possible to have a negative overhead?
>
> http://www.linksysinfo.org/index.php?threads/speedmod-with-tc-atm-qos-patch-for-adsl.31541/
>
You can use 'tc-stab' for negative overhead.
http://stuff.onse.fi/man?program=tc-stab§ion=8
-Jussi
next prev parent reply other threads:[~2013-06-03 19:50 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-29 13:13 tc linklayer ADSL calc broken after commit 56b765b79 (htb: improved accuracy at high rates) Jesper Dangaard Brouer
2013-05-29 15:52 ` Eric Dumazet
2013-05-29 22:50 ` Stephen Hemminger
2013-05-29 23:18 ` Eric Dumazet
2013-05-30 9:15 ` Jesper Dangaard Brouer
2013-05-30 9:52 ` [Bloat] " Steinar H. Gunderson
[not found] ` <20130529155034.334092c5-We1ePj4FEcvRI77zikRAJc56i+j3xesD0e7PPNI6Mm0@public.gmane.org>
2013-05-30 0:34 ` Dave Taht
2013-05-30 8:09 ` Jesper Dangaard Brouer
2013-05-30 7:51 ` Jesper Dangaard Brouer
2013-05-30 14:39 ` Eric Dumazet
2013-05-30 15:55 ` Jesper Dangaard Brouer
2013-05-30 16:29 ` Jussi Kivilinna
2013-06-02 21:15 ` Eric Dumazet
2013-06-02 21:33 ` [PATCH iproute2] htb: report overhead attribute Eric Dumazet
2013-06-03 15:45 ` Rick Jones
2013-06-03 15:56 ` Eric Dumazet
2013-06-04 11:11 ` Jesper Dangaard Brouer
2013-06-04 13:58 ` Eric Dumazet
2013-06-04 15:08 ` Jesper Dangaard Brouer
2013-06-03 19:50 ` Jussi Kivilinna [this message]
2013-06-07 15:56 ` Stephen Hemminger
2013-06-07 16:00 ` Eric Dumazet
2013-06-04 12:13 ` Bad shaping at low rates, after commit 56b765b79 (htb: improved accuracy at high rates) Jesper Dangaard Brouer
2013-06-04 15:18 ` Eric Dumazet
2013-06-04 15:55 ` Eric Dumazet
2013-06-04 16:02 ` Eric Dumazet
2013-06-04 17:11 ` [PATCH] net_sched: htb: do not mix 1ns and 64ns time units Eric Dumazet
2013-06-04 20:21 ` Jesper Dangaard Brouer
[not found] ` <20130604222135.67eedab8-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-04 20:26 ` Dave Taht
2013-06-04 21:02 ` Eric Dumazet
2013-06-04 20:50 ` Eric Dumazet
2013-06-05 0:44 ` David Miller
2013-06-06 13:55 ` RFC: Proposed fix for tc linklayer calc broken after commit 56b765b79 (htb: improved accuracy at high rates) Jesper Dangaard Brouer
2013-06-06 14:28 ` Eric Dumazet
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