Hi everyone, I have this applications that uses UDP to send data within an isolated LAN. The throughput is very high. This is the configuration I have: Red Hat Linux 6.2 with kernel 2.2.18 To test the performance of this application I measured how much data was sent according to the returning value of sendto() and I also measured with a sniffer program how much data was actually being transmitted to the network To my surprise these two parameters were not the same. After reading the manual page for sendto() I came across the following: ENOBUFS The output queue for a network interface was full. This generally indicates that the interface has stopped sending, but may be caused by transient congestion. (This cannot occur in Linux, packets are just silently dropped when a device queue overflows.) What I understand is that actually data may be dropped without the application receving any error message. Is there any easy way to get around this problem or this is intrinsic to Linux and therefore I should hack it in order to sovlve it? many thanks Raul - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
