Re: TSO support and performance gain
On Friday, April 5th, 2024 at 8:32 PM, Jan Klemkow wrote: > Pure sending will saturate your interface 1/10 Gbit/s. So, it depends > on your traffic source. The receiving speed of the opposite interface > will be the bottleneck of the em(4)/bnxt(4) sending interface. Also > the speed of your disk, when you send local files over network. > > TSO in general just helps with bulk traffic like Downloads. If your > firewall just handles many small TCP connections, it wont help you that > much. Thank you both Jan and Claudio for your answers. I understand now that in my specific use case there is hardly any advantage. Best, Mabi
Re: TSO support and performance gain
Hi Mabi, On Fri, Apr 05, 2024 at 05:24:27PM +, mabi wrote: > First thank you for another great OpenBSD release. I just updated my > home firewall today and was wondering about the performance of TSO > support on bnxt and em interfaces which have been added to the 7.5 > release... > > Does anyone know roughly the performance gains by having TSO support > on these NICs enabled? Pure sending will saturate your interface 1/10 Gbit/s. So, it depends on your traffic source. The receiving speed of the opposite interface will be the bottleneck of the em(4)/bnxt(4) sending interface. Also the speed of your disk, when you send local files over network. TSO in general just helps with bulk traffic like Downloads. If your firewall just handles many small TCP connections, it wont help you that much. bye, Jan
Re: TSO support and performance gain
On Fri, Apr 05, 2024 at 05:24:27PM +, mabi wrote: > Hi, > > First thank you for another great OpenBSD release. I just updated my home > firewall today and was wondering about the performance of TSO support on bnxt > and em interfaces which have been added to the 7.5 release... > > Does anyone know roughly the performance gains by having TSO support on these > NICs enabled? > For a firewall the performance gain is around 0. -- :wq Claudio
TSO support and performance gain
Hi, First thank you for another great OpenBSD release. I just updated my home firewall today and was wondering about the performance of TSO support on bnxt and em interfaces which have been added to the 7.5 release... Does anyone know roughly the performance gains by having TSO support on these NICs enabled? Best regards, Mabi
