Re: [RFC] Failover-friendly TCP retransmission

2007-06-06 Thread noboru . obata . ar
Hi Andi, I thank you for your comments. Andi Kleen <[EMAIL PROTECTED]> writes: > > Your suggestion, to utilize NET_XMIT_* code returned from an > > underlying layer, is done in tcp_transmit_skb. > > > > But my problem is that tcp_transmit_skb is not called during a > > certain period of time. S

Re: [RFC] Failover-friendly TCP retransmission

2007-06-05 Thread Andi Kleen
> Your suggestion, to utilize NET_XMIT_* code returned from an > underlying layer, is done in tcp_transmit_skb. > > But my problem is that tcp_transmit_skb is not called during a > certain period of time. So I'm suggesting to cap RTO value so > that tcp_transmit_skb gets called more frequently.

Re: [RFC] Failover-friendly TCP retransmission

2007-06-05 Thread noboru . obata . ar
Hi Andi, Andi Kleen <[EMAIL PROTECTED]> writes: > > Please note first that I want to address physical failures by > > the failover-capable network devices, which are increasingly > > becoming important as Xen-based VM systems are getting popular. > > Reducing a single-point-of-failure (physical de

Re: [RFC] Failover-friendly TCP retransmission

2007-06-04 Thread Andi Kleen
[EMAIL PROTECTED] writes: > Please note first that I want to address physical failures by > the failover-capable network devices, which are increasingly > becoming important as Xen-based VM systems are getting popular. > Reducing a single-point-of-failure (physical device) is vital on > such VM sy