Messages in this thread | | | From | "johnny zhao" <> | Subject | udp packet loss even with large socket buffer | Date | Fri, 27 Feb 2004 20:09:24 -0500 |
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Hi,
I have a problem when trying to receive udp packets containing video data sent by Microsoft Windows Messenger. Here is a detailed description:
Linux box: Linux-2.4.21-0.13mdksmp, P4 2.6G HT socket mode: blocked mode code used: while ( recvfrom(...) ) socket buffer size: 8388608, set by using sysctl -w net.core.rmem_default and rmem_max
I used ethereal(using libpcap) to monitor the network traffic. All the packets were transferred and captured by libpcap. But my program constantly suffers from packet loss. According to ethereal, the average time interval between 2 packets is 70-80ms, and the minimum interval can go down to ~1ms. Each packet is smaller than 1500 bytes (ethernet MTU).
Can anybody help me? I googled and found a similar case that had been solved by increasing the socket buffer size. But it doesn't work for me. I think 8M is a crazily large size :(
Thank you!
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