The macOS log is very different from those seen in Unix. This explains where and what log files are, how they get written, how much they store, and how quickly entries can be written.
Whither
How long does it take to write a Signpost to the unified log? Measuring this is essential if you’re going to use them to measure performance.
Makes it easy to write, harvest and analyse Signposts in the log to measure performance. Important fix for Apple Silicon too.
You can use Signposts readily from scripting languages, shell scripts, even within 3rd party apps, with the aid of these tools.
This page is for your support questions and comments on my free utilities Consolation, RouteMap, Whither, Woodpile, MakeLogarchive, […]
At last: RouteMap performs some analysis on your Signposts, and with the other tools can be used to estimate latency, and look at macOS system performance too.
Picking the right time system for the purpose is critical when you want to analyse very short periods. Sometimes it takes time to discover how to juggle with time.
Blowhole 7 now writes proper Signposts in Mojave, as well as Pseudo-Signposts in Sierra and High Sierra.
A new version of Blowhole, the second alpha of RouteMap, and a complete tutorial toolkit to help you get started using log Signposts from Sierra to Mojave.
Do you want to measure performance or get other info from your app or script? Using Signposts is ideal, and here’s the first glimpse of a new tool to harvest them.
The Eclectic Light Company 