Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-23 Thread Ben Greear
On 01/22/2018 10:46 AM, Josh Hunt wrote: On Mon, Jan 22, 2018 at 10:30 AM, Ben Greear wrote: On 01/22/2018 10:16 AM, Eric Dumazet wrote: On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: My test case is to have 6 processes each create 5000 TCP IPv4 connections to each other on a system w

Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Josh Hunt
On Mon, Jan 22, 2018 at 10:30 AM, Ben Greear wrote: > On 01/22/2018 10:16 AM, Eric Dumazet wrote: >> >> On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: >>> >>> My test case is to have 6 processes each create 5000 TCP IPv4 connections >>> to each other >>> on a system with 16GB RAM and send sl

Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Ben Greear
On 01/22/2018 10:30 AM, Ben Greear wrote: On 01/22/2018 10:16 AM, Eric Dumazet wrote: On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: My test case is to have 6 processes each create 5000 TCP IPv4 connections to each other on a system with 16GB RAM and send slow-speed data. This works fin

Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Ben Greear
On 01/22/2018 10:16 AM, Eric Dumazet wrote: On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: My test case is to have 6 processes each create 5000 TCP IPv4 connections to each other on a system with 16GB RAM and send slow-speed data. This works fine on a 4.7 kernel, but will not work at al

Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Willy Tarreau
Hi Eric, On Mon, Jan 22, 2018 at 10:16:06AM -0800, Eric Dumazet wrote: > On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: > > My test case is to have 6 processes each create 5000 TCP IPv4 connections > > to each other > > on a system with 16GB RAM and send slow-speed data. This works fine on

Re: TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Eric Dumazet
On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: > My test case is to have 6 processes each create 5000 TCP IPv4 connections to > each other > on a system with 16GB RAM and send slow-speed data. This works fine on a 4.7 > kernel, but > will not work at all on a 4.13. The 4.13 first complain

TCP many-connection regression between 4.7 and 4.13 kernels.

2018-01-22 Thread Ben Greear
My test case is to have 6 processes each create 5000 TCP IPv4 connections to each other on a system with 16GB RAM and send slow-speed data. This works fine on a 4.7 kernel, but will not work at all on a 4.13. The 4.13 first complains about running out of tcp memory, but even after forcing tho