On 01. mai 2018 18:09, Dave Watson wrote:
On 04/24/18 10:01 AM, Dave Watson wrote:
On 04/22/18 11:21 PM, Andre Tomt wrote:
The kernel seems to get increasingly unstable as I load it up with client
connections. At about 9Gbps and 700 connections, it is okay at least for a
while - it might run fine for say 45 minutes. Once it gets to 20 - 30Gbps,
the kernel will usually start spewing OOPSes within minutes and the traffic
drops.
Some bad interaction between mlx4 and kTLS?
I tried to repro, but wasn't able to - of course I don't have an mlx4
test setup. If I manually add a tls_write_space call after
do_tcp_sendpages, I get a similar stack though.
Something like the following should work, can you test? Thanks
Thank you!
This does indeed seem to have fixed this problem. It has been sustaining
~36Gbps and about 3000 clients for about an hour now without any crashes.
Tested on 4.17-rc3 git snapshot as of a few hours ago.
As for performance I am very happy with kTLS. This is some very cool
stuff. I dig it. I'm getting a bit over 10Gbps per 2.5Ghz Broadwell-DE
core on this low power quad core system. Nearly ideal network conditions
and all the data is hot in pagecache but still. I'm going to have to add
another port. ;-)
