Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q6 - network is no longersmooth

[P.O. Gaillard]

Hello,

I just tried with Q6 and the network behaviour seems odd :
 - my ssh connection freezes a bit,
 - communication between the two PCs sharing the GigE connection is difficult 
to start :
13:17:37.965962 arp who-has djerba-gig tell canopus-gig
13:17:37.966220 IP djerba-gig > canopus-gig: udp
13:17:37.966230 IP djerba-gig > canopus-gig: udp
13:17:37.966313 IP djerba-gig > canopus-gig: udp
13:17:38.965906 arp who-has djerba-gig tell canopus-gig
13:17:38.966040 IP djerba-gig > canopus-gig: udp
This is strange since canopus is the one with Q6
 - ping does not start for a moment since all packets are RX-ERROR, then they 
start being received.

Here is the output of ethtool -S eth1

NIC statistics:
     rx_packets: 581
     tx_packets: 552
     rx_bytes: 545746
     tx_bytes: 66508
     rx_errors: 112950
     tx_errors: 0
     rx_dropped: 90
     tx_dropped: 0
     multicast: 0
     collisions: 0
     rx_length_errors: 0
     rx_over_errors: 0
     rx_crc_errors: 0
     rx_frame_errors: 0
     rx_fifo_errors: 112860
     rx_missed_errors: 112860
     tx_aborted_errors: 0
     tx_carrier_errors: 0
     tx_fifo_errors: 0
     tx_heartbeat_errors: 0
     tx_window_errors: 0
     tx_abort_late_coll: 0
     tx_deferred_ok: 0
     tx_single_coll_ok: 0
     tx_multi_coll_ok: 0
     rx_long_length_errors: 0
     rx_short_length_errors: 0
     rx_align_errors: 0
     tx_tcp_seg_good: 0
     tx_tcp_seg_failed: 0
     rx_flow_control_xon: 0
     rx_flow_control_xoff: 0
     tx_flow_control_xon: 45
     tx_flow_control_xoff: 112905
     rx_long_byte_count: 545746
     rx_csum_offload_good: 1
     rx_csum_offload_errors: 0


I rebooted with Q5 (+ netdev_max_backlog=32) and everything was fine. Is there 
anything I can do to make my report more useful for you ?

	

	P.O. Gaillard







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