45cfef0441
netsend 127.0.0.1 6666-7777 [payloadsize] [packet_rate] [duration] This is useful to test the behaviour of systems that do some kind of flow classifications and so exhibit different behaviour depending on the number of flows that hit them. I plan to add a similar extension to sweep on a range of IP addresses, so we can issue a single command to flood (obviously, for testing purposes!) a number of different destinations. When there is only one destination, we do a preliminary connect() of the socket so we can use send() instead of sendto(). When we have multiple ports, the socket is not connect()'ed and we do a sendto() instead. There is a performance hit in this case, as the throughput on the loopback interface (with a firewall rule that blocks the transmission) goes down from 900kpps to 490kpps on my test machine. If the number of different destinations is limited, one option to explore is to have multiple connect()ed sockets. MFC after: 1 month |
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| debugscripts | ||
| diag | ||
| kerneldoc | ||
| KSE | ||
| LibraryReport | ||
| regression | ||
| sched | ||
| test | ||
| tools | ||
| install.sh | ||
| make_libdeps.sh | ||
| README | ||
$FreeBSD$ This directory tree contains tools used for the maintenance and testing of FreeBSD. There is no toplevel Makefile structure since these tools are not meant to be built as part of the standard system, though there may be individual Makefiles in some of the subdirs. Please read the README files in the subdirs for further information.