ROS 5.10 - 5.12 very unstable as pptp BRAS on an x86. every 5-12 hours i see a a soft lockup on a random core of the cpu, after that whole system hangs. ROS 5.11 have much more performance on my BRAS (about 150+ Mbps, than it hangs). supout.rif does not creates in case of hangup.
ROS 5.6 seems to be very stable, uptime is over 2 weeks, generally.
but in pptp mode performance is wery low, below 130 Mbps.
Configuration - x86 core quad Q6600 + dualhead INTEL 82576 NIC + rtl8169 NIC for communication with billing server, (radius protocol). Billing - Abills 0.52b. Simple queue for each user, connected via pptp.
In case of 120+ users online i see that LA on 1 of cores CPU reaches 100% (98-100% by interrupts). This 100% LA moves from 1 core to another, and total throughput of BRAS limited near 130 Mbps. In this case other cores loaded on 5-20% (system-resources-cpu) in tools-profile i see that this core loaded by queuing & firewall (mostly).
Today i bind tx-rx-lanes of NICs to different cores of cpu, and increase ethernet-default queue to 400 and default-small queue to 50. Now i gathering statistics of LA.
On this forum i read that i should disable RPS on my ethernet interfaces. How can i do this? i can't find it.
Any ideas about increasing PPtP performance? (Linux Accel-ppp + quagga?)
P.S. Cracked ROS 3.30 was very stable, but it doesn't support 82576.
I bought L5 license for ROS 5.6 and i don't know why i should pay for such instability.
P.P.S. Sorry for my English, i'm from Ukraine.