From mboxrd@z Thu Jan 1 00:00:00 1970 From: Denys Fedoryshchenko Subject: Re: HTB going crazy over ~5Gbit/s (4.12.9, but problem present in older kernels as well) Date: Wed, 13 Sep 2017 18:56:52 +0300 Message-ID: <33c45cf6c5a52498f45132d29d86bc3d@nuclearcat.com> References: <4cd23914d8cc2cf5caf78cb5654fb245@nuclearcat.com> <1505317903.15310.167.camel@edumazet-glaptop3.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Cc: Linux Kernel Network Developers , netdev-owner@vger.kernel.org To: Eric Dumazet Return-path: Received: from nuclearcat.com ([144.76.183.226]:48602 "EHLO nuclearcat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751258AbdIMP4z (ORCPT ); Wed, 13 Sep 2017 11:56:55 -0400 In-Reply-To: <1505317903.15310.167.camel@edumazet-glaptop3.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: On 2017-09-13 18:51, Eric Dumazet wrote: > On Wed, 2017-09-13 at 18:20 +0300, Denys Fedoryshchenko wrote: >> Hi, >> >> I noticed after increasing bandwidth over some amount HTB started to >> throttle classes it should not throttle. >> Also estimated rate in htb totally wrong, while byte counters is >> correct. >> >> Is there any overflow or something? > > Thanks Denys for the report, I will take a look at this, since I > probably introduced some regression. It's definitely not something recent, this system was on older kernel with uptime over 200 days, and this bottleneck was present, i noticed it long time before. But never tried to remove estimators (increasing burst/cburst to insane values saved me for a while).