Hi all; I have a problem on my fresh ntop 4.0 installation: Only one packet is processed. I am using sFlow plugin (no interface capture: "-i none" option) and it reports to be receiving a lot of sFlow packets, ntop receives them but only processes one packet. I ran some tests and discovered that, no matter the source (internal NIC or flow), just one packet gets processed and all others are kept queued. I have downgraded ntop to 3.3.10, the last stable before 3.4, and everything looks to be working fine. Changelog for 3.4 informs: "a partially rewritten ntop processing engine to address reliability and performance." Maybe this change in the processing engine have caused a bug in my setup, as the behavior that I see is that almost all the packets (besides the first), no matter the source (internal NIC or flow), is queued and never gets processed. Maybe that new processing engine is getting stuck somehow. I do not think it is a loop because my CPU does not get busy, ntop seems to run idle.
Some info from info.html: Packets Received 1,895 Processed Immediately 1 (0.1 %) Queued 1,894 (99.9 %) Current Queue (none) 0 Maximum Queue (none) 0 (Limit 2048) Current Queue (sFlow-device.2) 1894 Maximum Queue (sFlow-device.2) 1894 (Limit 2048) Ntop statistics for the sFlow device: Traffic Report for 'sFlow-device.2' [switch] Packets Dropped (ntop) 0.0% 0 Total Received (ntop) 1,606 Total Packets Processed 1 Unicast 100.0% 1 Broadcast 0.0% 0 Multicast 0.0% 0 Here are the statistics from sFlow plugin: Flow Statistics Received Flows Flow Senders 172.17.205.39 [2,362 pkts] Number of sFlow Packets Rcvd 2,362 Number of sFlow Packets with Bad Version 0 Number of sFlow Packets Processed 2,362 Number of v2 Flows Rcvd 0 Number of v4 Flows Rcvd 0 Number of v5 Flows Rcvd 2,362 Discarded Flows Number of Flows with Bad Data 0 Total Number of Flows Processed 0 Flow Analisys Number of sFlow Samples Rcvd 1,615 Number of sFlow Counter Updates Rcvd 1,734 Thanks. [cid:[email protected]] Rafael Sarres de Almeida Analista Departamento de Tecnologia da Informação Divisão de Administração de Redes Tel.:+55 (61) 3414-4148 E-mail: [email protected]
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