Projects / CBLM


CBLM is a high performance latency (one-way and round-trip), packet loss, and jitter monitoring probe. When run on two or more servers, a full mesh of connections is automatically set up between the probes, between which UDP packets are transmitted. Statistics are collected and stored within a MySQL database.

Operating Systems

Recent releases

  •  27 Oct 2006 18:01

    Release Notes: This release fixes missing MySQL tables.

    •  21 Jun 2006 06:58

      Release Notes: Graphing support was added to the PHP frontend. This requires GD compiled into PHP. Database locking for data roll up was enabled. The menu.php file was added, which was missing from version 2.9.2.

      •  22 May 2006 01:43

        Release Notes: Functions have been reorganized into a more logical set of files. Out of order and duplicate packet detection and tracking is finished. Transmit and receive threads have been modified to use a single socket each. select() is used for send and receive. Different ToS markings must now be specified as separate arguments. There are DSCP and precedence options in addition to ToS for easier use. Support has been added for setting priority at the same time as ToS, DSCP, or precedence. This allows vconfig to set the VLAN priority separately from the ToS marking. TTL and fragment knobs have been added. The PHP frontend has been updated.

        •  03 May 2006 11:53

          Release Notes: Missing PHP files were added. MIBs were added.

          •  02 May 2006 05:04

            Release Notes: The program was completely rewritten in C. The PHP front-end was rewritten and a configurable display matrix was added. Support for ToS markings and for one-way latency was added. A man page was included for cblmd. Loss of connectivity to the MySQL database is now handled gracefully. Support for real-time addition and removal of probes was added. Automatic propagation of preference changes was added. ToS rewrite errors are now tracked. GNU autotools is now used. Internal tracking of features can now be disabled. UDP checking processing was disabled.


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