Typical event rate · category

Distributed system log rate: 100 events/s per device

A distributed system source typically produces 100 events per second per device, bursting to 1,000: per node at INFO; log level is the lever. The rate is an informed estimate, a starting point for a sizing, not a measurement; the event sizes below are measured.

Measured sources in this category

Average bytes per event, measured, and one device's volume at the typical 100 events per second.

At the median size, a day from one device, 1.4 GB, is about 2 times a CD-ROM.

Size a fleet

Raw bytes, before compression, indexing overhead and replication.

Measure a sample of your own

The figure above is an average; yours will differ, and for distributed system logs what moves it most is this: per node at INFO; log level is the lever. The profiler reads a sample from distributed system logs in your browser, line by line, one event per line, and reports the bytes per line to set against it. Nothing is uploaded.