Re: [ovs-discuss] Isn't there any way to use RSS hash instead of jhash in flow_hash()

2017-05-25 Thread Ben Pfaff
On Wed, May 24, 2017 at 04:01:28PM +0900, Heung Sik Choi wrote: > Thank you for replying > > Are you saying that you want to add RSS to the datapath to > move packets to different queues? Which queues? Or do you just want to > create a Toeplitz hashing algorithm function that will return a hash >

Re: [ovs-discuss] Isn't there any way to use RSS hash instead of jhash in flow_hash()

2017-05-24 Thread Greg Rose
On Wed, 2017-05-24 at 16:01 +0900, Heung Sik Choi wrote: > Thank you for replying > > > Are you saying that you want to add RSS to the datapath to > move packets to different queues? Which queues? Or do you just want to > create a Toeplitz hashing algorithm function that will return a hash > valu

Re: [ovs-discuss] Isn't there any way to use RSS hash instead of jhash in flow_hash()

2017-05-24 Thread Heung Sik Choi
Thank you for replying Are you saying that you want to add RSS to the datapath to move packets to different queues? Which queues? Or do you just want to create a Toeplitz hashing algorithm function that will return a hash value and it doesn't really have anything to do with RSS? Sorry to confuse

Re: [ovs-discuss] Isn't there any way to use RSS hash instead of jhash in flow_hash()

2017-05-23 Thread Greg Rose
On Tue, 2017-05-23 at 16:42 +0900, Heung Sik Choi wrote: > Hi, > > > In many articles about ovs, there are some mention that hashing > function cause quite significant overhead. Also, I did 'perf record' > performing OVS L3 forwarding, and found that. > > > So, an idea comes up, which is that i

[ovs-discuss] Isn't there any way to use RSS hash instead of jhash in flow_hash()

2017-05-23 Thread Heung Sik Choi
Hi, In many articles about ovs, there are some mention that hashing function cause quite significant overhead. Also, I did 'perf record' performing OVS L3 forwarding, and found that. So, an idea comes up, which is that implement RSS hash algorithm(Toeplitz hash algorithm) in kernel datapath modul