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Date: Fri, 09 Apr 2010 16:37:53 +0900 From: Koki Sanagi <sanagi.koki@...fujitsu.com> To: netdev@...r.kernel.org CC: izumi.taku@...fujitsu.com, kaneshige.kenji@...fujitsu.com, davem@...emloft.net, nhorman@...driver.com Subject: [RFC PATCH 0/2] netdev: Add tracepoint to network/driver interface These patches add tracepoints to network/driver interface. These tracepoints are helpful to investigate whether a packet passes or not. For example, when Heart Beat is disconnected, that information is helpful to investigate the cause is whether driver/device side or not. An output is below. sshd-2443 [001] 68238.415621: netdev_start_xmit: dev=eth3 skbaddr=f3db5138 len=114 <idle>-0 [001] 68238.417058: netdev_receive_skb: dev=eth3 skbaddr=f3c81540 len=52 <idle>-0 [001] 68238.704363: netdev_receive_skb: dev=eth3 skbaddr=f3c81540 len=100 sshd-2443 [001] 68238.705459: netdev_start_xmit: dev=eth3 skbaddr=f3db5138 len=114 <idle>-0 [001] 68238.706891: netdev_receive_skb: dev=eth3 skbaddr=f3c81540 len=52 <idle>-0 [001] 68238.878736: netdev_receive_skb: dev=eth3 skbaddr=f3c81540 len=100 sshd-2443 [001] 68238.880361: netdev_start_xmit: dev=eth3 skbaddr=f3db5138 len=114 As other use case I have, we can get throughput per interface with some sort of perf scripts. I plan to create it. Thanks Koki Sanagi -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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