From: Jarek Poplawski <jarkao2@gmail.com>
To: Patrick McHardy <kaber@trash.net>
Cc: slavon@bigtelecom.ru, netdev@vger.kernel.org
Subject: Re: Packetlost when "tc qdisc del dev eth0 root"
Date: Sun, 20 Jan 2008 00:21:56 +0100 [thread overview]
Message-ID: <47928614.1090209@gmail.com> (raw)
In-Reply-To: <478D9222.7030603@trash.net>
Patrick McHardy wrote, On 01/16/2008 06:12 AM:
> slavon@bigtelecom.ru wrote:
>> Good night! =)
>>
>> Sorry... i was wrong...
>> I see that problem more serious....
>>
>> Lets see to scheme
>>
>> Class 1
>> ---qdisc
>> ------- 10k classes
>> Class 2
>> ---qdisc
>> ------- 10k classes
>>
>> All traffic go to class 2... class 1 qdisc not have packets and if we
>> delete it - packets not lost... in theory... lets try delete class 1
>> qdisc (all childrens delete too)...
>> PC freeze on 2-5 seconds... its not forward any traffic at this
>> moment... its great tree lock?
>>
>> Its normal or code need to more accurate lock?
>
>
> htb class destruction can be quite expansive if one of the rb trees
> needs to be rebalanced. Doing that for 10000 classes would explain
> the delay.
I've just looked at this and it seems there should be no rbtrees operations
during htb qdisc deletion (or I miss something).
Slavon, I see nearby that you teach oprofile...
Regards,
Jarek P.
next prev parent reply other threads:[~2008-01-19 23:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-15 11:10 Packetlost when "tc qdisc del dev eth0 root" Badalian Vyacheslav
2008-01-15 16:05 ` Patrick McHardy
2008-01-15 16:11 ` slavon
2008-01-15 21:15 ` Jarek Poplawski
2008-01-15 21:46 ` slavon
2008-01-15 22:04 ` slavon
2008-01-15 22:49 ` Jarek Poplawski
2008-01-16 5:12 ` Patrick McHardy
2008-01-19 23:21 ` Jarek Poplawski [this message]
2008-01-15 22:32 ` Jarek Poplawski
2008-01-15 23:16 ` Glen Turner
2008-01-16 5:02 ` Patrick McHardy
2008-01-16 8:02 ` Jarek Poplawski
2008-01-16 8:05 ` Patrick McHardy
2008-01-16 8:35 ` Badalian Vyacheslav
2008-01-16 9:42 ` Jarek Poplawski
2008-01-16 8:52 ` Jarek Poplawski
2008-01-16 8:54 ` Badalian Vyacheslav
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