Re: tcp_mtu_probing on by default?

2012-02-08 Thread Martin Pool
On 8 February 2012 02:01, Stéphane Graber stgra...@ubuntu.com wrote: On 02/07/2012 09:40 AM, Mathieu Trudel-Lapierre wrote: The question would be how many people would benefit from this change? It's hard to measure. I have seen that it fixed problems for several people having trouble with

Re: tcp_mtu_probing on by default?

2012-02-08 Thread Ritesh Raj Sarraf
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 On Tuesday 07 February 2012 04:45 AM, Martin Pool wrote: I have helped a few people recently who were having path MTU discovery problems, causing bulk TCP transfers to hang quasi-intermittently. Once you know the likely cause it's fairly easy

Re: tcp_mtu_probing on by default?

2012-02-08 Thread Bedwell, Jordon
On Wed, Feb 8, 2012 at 2:51 AM, Ritesh Raj Sarraf r...@researchut.com wrote: I have tried using it in the past because of my b0rken wireless router from the ISP which had a different, non-standard, MTU size. There is no standard MTU size. There are ranges and mins but... Will setting it on

Re: tcp_mtu_probing on by default?

2012-02-08 Thread Martin Pool
On 9 February 2012 07:45, Bedwell, Jordon jor...@envygeeks.com wrote: On Wed, Feb 8, 2012 at 2:51 AM, Ritesh Raj Sarraf r...@researchut.com wrote: I have tried using it in the past because of my b0rken wireless router from the ISP which had a different, non-standard, MTU size. There is no

Re: tcp_mtu_probing on by default?

2012-02-07 Thread Mathieu Trudel-Lapierre
On Mon, Feb 6, 2012 at 6:15 PM, Martin Pool m...@canonical.com wrote: I have helped a few people recently who were having path MTU discovery problems, causing bulk TCP transfers to hang quasi-intermittently. Once you know the likely cause it's fairly easy but it's a fairly annoying problem for

Re: tcp_mtu_probing on by default?

2012-02-07 Thread Stéphane Graber
On 02/07/2012 09:40 AM, Mathieu Trudel-Lapierre wrote: On Mon, Feb 6, 2012 at 6:15 PM, Martin Poolm...@canonical.com wrote: I have helped a few people recently who were having path MTU discovery problems, causing bulk TCP transfers to hang quasi-intermittently. Once you know the likely cause

tcp_mtu_probing on by default?

2012-02-06 Thread Martin Pool
I have helped a few people recently who were having path MTU discovery problems, causing bulk TCP transfers to hang quasi-intermittently. Once you know the likely cause it's fairly easy but it's a fairly annoying problem for someone who doesn't recognize it. There is a kernel sysctl sudo sysctl