lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Sun, 20 Jan 2008 00:21:56 +0100
From:	Jarek Poplawski <>
To:	Patrick McHardy <>
Subject: Re: Packetlost when "tc qdisc del dev eth0 root"

Patrick McHardy wrote, On 01/16/2008 06:12 AM:

> 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...

Jarek P.
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists