Re: [PATCH v2 1/2] tcp: add new tcp_mtu_probe_floor sysctl

2019-08-09 Thread David Miller
From: Josh Hunt Date: Wed, 7 Aug 2019 19:52:29 -0400 > The current implementation of TCP MTU probing can considerably > underestimate the MTU on lossy connections allowing the MSS to get down to > 48. We have found that in almost all of these cases on our networks these > paths can handle much l

Re: [PATCH v2 1/2] tcp: add new tcp_mtu_probe_floor sysctl

2019-08-08 Thread Josh Hunt
On 8/7/19 11:12 PM, Eric Dumazet wrote: On 8/8/19 1:52 AM, Josh Hunt wrote: The current implementation of TCP MTU probing can considerably underestimate the MTU on lossy connections allowing the MSS to get down to 48. We have found that in almost all of these cases on our networks these paths

Re: [PATCH v2 1/2] tcp: add new tcp_mtu_probe_floor sysctl

2019-08-08 Thread Neal Cardwell
On Wed, Aug 7, 2019 at 7:55 PM Josh Hunt wrote: > > The current implementation of TCP MTU probing can considerably > underestimate the MTU on lossy connections allowing the MSS to get down to > 48. We have found that in almost all of these cases on our networks these > paths can handle much larger

Re: [PATCH v2 1/2] tcp: add new tcp_mtu_probe_floor sysctl

2019-08-07 Thread Eric Dumazet
On 8/8/19 1:52 AM, Josh Hunt wrote: > The current implementation of TCP MTU probing can considerably > underestimate the MTU on lossy connections allowing the MSS to get down to > 48. We have found that in almost all of these cases on our networks these > paths can handle much larger MTUs meanin