Measured event size · Application

Open SSH log size: 111 bytes per event

The average Open SSH event is 111 bytes, measured from samples of its logs. An application source typically produces 100 events per second per device, bursting to 1,000: web access logs high, service audit trails low. The rate is an informed estimate; the size is measured.

111 B
per event, measured
100
events per second, typical
959 MB
per device per day
350 GB
per device per year

What that comes to

One device, raw bytes, at the typical rate for an application source.

PeriodAt 100 events/sAt the 1,000 events/s burst
An hour40 MB400 MB
A day959 MB9.6 GB
90 days86.3 GB863 GB
A year350 GB3.5 TB

A day of Open SSH logs from one device at the category's typical rate, 959 MB, is about the size of a CD-ROM.

Size your own

100
events per second
959 MB
per day
86.3 GB
at retention

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 Open SSH what moves it most is this: web access logs high, service audit trails low. The profiler reads a sample from Open SSH in your browser, line by line, one event per line, and reports the bytes per line to set against it. Nothing is uploaded.

Other application sources

The application category: its typical rate and every source in it →

Logcaliper, free on iOS, has these sizes and rates built in and sizes a whole list of sources at retention: storage, cluster capacity, nodes.