RRDtool Gallery

Unlike most other report, data in this report are collected every hour (3600 sec). This graph shows how the effectiveness of using postfix UCE control, greylisting and spamassassin to reduce spam. -- Bambang Budiharto <budhi@XYZ-i6x.org>, 2005/6

This graph shows amount of total and peer2peer traffic generated by user. Online, offline decision is based on information if the computer was sending any data. (Legend translation: 'bajtow na sek DO' - eng. incoming Bps, 'bajtow na sek Z' - eng. outgoing Bps, 'razem' - eng. total, 'wylaczony' - eng. offline, 'wlaczony' - eng. online) -- Gabriel Borkowski , 2005/6

This graphs show the effect that the greylisting technique had on our mail traffic. Notice the drop of spam and viruses in the middle of the graph (June 2004) and the corresponding increase in the rejected mails. -- David Schweikert <dws@XYZ-ee.ethz.ch>, 2005/6

Created for use with Torrus (unsubmitted) to show the usage of all available RAM, stacked by type of usage. -- Michiel Brandenburg <apex@XYZ-xepa.nl>, 2005/5

Created with drraw from Christophe Kalt (See RRDtool Companions) Changing Colors and using the new Trend Funkion. -- Christoph Baumann <christoph.baumann@XYZ-coop.ch>, 2005/5

Fluxoscope is a system used by SWITCH for measurements of our external network traffic. One of its products are graphs which represent, for each external connection, the protocol distribution of traffic over time. The example graph shows the traffic distribution on one of our "upstream" or transit ISPs over a period of a few hours. The "positive" part of the graph shows incoming traffic (what we receive from the ISP), the "negative" part corresponds to outgoing traffic (what we send them). -- Simon Leinen <simon@XYZ-switch.ch>, 2005/5

OpenBSD's spam deferral daemon connection graph shows simultaneous connections in green, and connection times in blue. The dark blue line shows the average connection time, with lighter blue used to show the range from minimum to maximum as a blurring effect. The data is taken from a spamd logfile every time a line is added, or at 10 second intervals if no new data arrives in which case the most recent values are duplicated. The RRD is created with a 30 second heartbeat - so some fractional number of connections is possible. For those unfamiliar with spamd, it is an SMTP tarpit for blacklisted senders. The logfile includes the number of concurrent connections each time a new host connects, and the time a connection has lasted when a host disconnects. The number of connections should be fairly accurate in the graphs, while the connection times are not so in the short-term, depending more on the timing of the disconnects. Connections and times are tracked separately in perl, except that disconnects cause a decrement in the connection count as well. -- Christopher Kruslicky <chris-rrdgallery@XYZ-kruslicky.net>, 2005/4

This graph shows that the Linux Intel computing resources available for particle physics research at the University of Wisconsin provides 4.7 CPU years of computing power every day. It's a combination of Condor pools managed by High Energy Physics, the Computer Science Department and the Grid Laboratory of Wisconsin. -- Steve Rader <rader@XYZ-hep.wisc.edu>, 2005/5 [demo]

This graph shows the utilization of Linux Intel CPUs by particle physics researchers and other members of the Grid Laboratory of Wisconsin. -- Steve Rader <rader@XYZ-hep.wisc.edu>, 2005/5 [demo]