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SLANG is a system for accurate measurements of RTT and derived metrics in an IP network.
ui.sh locks up when started on a node without network connectivity as sudo tries to reach the LDAP server. To avoid this, as a quick fix, ui.sh was modified to not run sudo when already logged in as root.
Latest commit 3214b42
Apr 8, 2013
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This is SLA-NG's "probed" application, which can be used as a ping tool (a little bit like iperf) or a an SLA daemon collecting statistics for many measurement sessions. The authors are of this program is Anders Berggren <email@example.com> and Lukas Garberg <firstname.lastname@example.org> working for Tele2 <email@example.com> ________________________________________________________________________ COMPILING In order to compile, you need Linux, libxml2, and pkg-config. In Debian, these are installed with (as root) # apt-get install libxml2-dev pkg-config You can then compile "probed" (the executable probed/probed) with $ ./configure $ make ________________________________________________________________________ RUNNING After compiling, the executable "probed" is found in the folder "probed". To try it out, start it $ probed -c 127.0.0.1 -u which will use user-land timestamping (-u) to ping itself (-c 127.0.0.1). To ping another machine, start it with as a server with $ probed -s -u on one machine, and as a client $ probed -c name-of-server -u on the other machine. To try out kernel timestamping, you need a kernel compiled with the configuration option CONFIG_NETWORK_PHY_TIMESTAMPING and network drivers with timestamp patches. You can do this yourself by adding "EXPORT_SYMBOL_GPL(skb_clone_tx_timestamp);" to the Linux file net/core/timestamping.c and "skb_tx_timestamp(skb);" in the beginning of the "xmit" function of the driver that you're using. In order to get hardware timestamping (very accurate!) to work, buy an Intel 82580 NIC, download the latest Linux kernel, compile it (as noted above) with CONFIG_NETWORK_PHY_TIMESTAMPING, and check out the Linux netdev thread http://marc.info/?m=129673051106564 if you're using 2.6.37 or older. ________________________________________________________________________ F.A.Q. Q: It doesn't compile! A: It requires Linux (newer versions), libxml2-dev and pkg-config. If you have, please report compile errors to us. Q: It crashes! A: Please contact us! Q: It just says "Connecting to..."! A: You need to run probed in server mode (-s) on the other end, and make sure that both TCP and UDP on port 60666 (or whatever you choose with the flag -p) is open. Q: I get TX timestamp errors! A: You have probably a kernel with CONFIG_NETWORK_PHY_TIMESTAMPING but not patched drivers with skb_tx_timestamp. See "RUNNING". Or, you have an Intel 82580 and would like to use hardware timestamping, but without using a good driver. See http://marc.info/?m=129673051106564. You also need to be root, in order to use hardware timestamping. Q: I have checked everything, but still get timestamp errors! A: Please contact us!