Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-21 Thread Neal Cardwell
On Wed, Feb 21, 2018 at 7:38 AM, Teodor Milkov wrote: > Here they are: > > > http://vps3.avodz.org/tmp/frto-4.14.11-linux.pcap.xz - 3.3 MB/s > > http://vps3.avodz.org/tmp/frto-4.14.11-windows.pcap.xz - connection > completely froze and eventually timed out > > http://vps3.avodz.org/tmp/frto-4.1

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-21 Thread Teodor Milkov
On 19.02.2018 20:05, Neal Cardwell wrote: On Mon, Feb 19, 2018 at 11:17 AM, Teodor Milkov wrote: On 19.02.2018 15:38, Neal Cardwell wrote: On Sun, Feb 18, 2018 at 4:02 PM, Teodor Milkov wrote: Hello, I've numerous reports from Windows users that after kernel upgrade from 4.9 to 4.14 they ex

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-19 Thread Neal Cardwell
On Mon, Feb 19, 2018 at 11:17 AM, Teodor Milkov wrote: > On 19.02.2018 15:38, Neal Cardwell wrote: >> >> On Sun, Feb 18, 2018 at 4:02 PM, Teodor Milkov wrote: >>> >>> Hello, >>> >>> I've numerous reports from Windows users that after kernel upgrade from >>> 4.9 >>> to 4.14 they experienced major

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-19 Thread Teodor Milkov
On 19.02.2018 15:38, Neal Cardwell wrote: On Sun, Feb 18, 2018 at 4:02 PM, Teodor Milkov wrote: Hello, I've numerous reports from Windows users that after kernel upgrade from 4.9 to 4.14 they experienced major slow downs and transfer stalls. After some digging, I found that the slowness start

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-19 Thread Neal Cardwell
On Sun, Feb 18, 2018 at 4:02 PM, Teodor Milkov wrote: > Hello, > > I've numerous reports from Windows users that after kernel upgrade from 4.9 > to 4.14 they experienced major slow downs and transfer stalls. > > After some digging, I found that the slowness starts with this commit: > > tcp: exten

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2018-02-18 Thread Teodor Milkov
Hello, I've numerous reports from Windows users that after kernel upgrade from 4.9 to 4.14 they experienced major slow downs and transfer stalls. After some digging, I found that the slowness starts with this commit: tcp: extend F-RTO to catch more spurious timeouts (89fe18e44) https://git.

Re: [PATCH net] tcp: restrict F-RTO to work-around broken middle-boxes

2017-04-07 Thread David Miller
From: Yuchung Cheng Date: Fri, 7 Apr 2017 11:42:05 -0700 > The recent extension of F-RTO 89fe18e44 ("tcp: extend F-RTO > to catch more spurious timeouts") interacts badly with certain > broken middle-boxes. These broken boxes modify and falsely raise > the receive window on the ACKs. During a t