Mac os x activity log

You can see bursts of log load from those three processes which are closely co-ordinated, and represent the periods when I have been developing apps in Xcode, signing them using codesign called from Xcode, not directly by me , then updating their documentation.

Activity Log

There was a peak of activity on 3 October, when I pushed out many updates to fix my code-signing problems. Those put little load on Xcode, but involved lots of signing and documentation updating. I have explained more technical details in my article here yesterday, which explains my concept of log load, and the factors which affect it, among other things.

It does, though, give great insight into the activity of different processes on that Mac over a surprisingly long period. On this iMac, my unified log files go back for around 20 days, which I thought was amazingly long. This information goes back about five times that, which is extraordinary. One immediate use for this information is when trying to work out which specific log files to examine, when diagnosing a problem or bug. Before this, you had nothing to go on other than the symptoms reported.

Now you can look back and work out exactly which log files are likely to contain most entries from the process es you are interested in. I have no doubt that Apple finds them invaluable when it analyses the output from sysdiagnose. You too can now access that previously hidden information. Please use it wisely.

Like Like. The unified log runs whenever your Mac is on, and not asleep. You have fine control over its logging of certain messages and message types, but I am not aware of any way to turn logging off altogether, nor to change the period for which logs are kept. Normally, none of this information is sent to Apple or anywhere else. However, if you send Apple the output from sysdiagnose , then all this information is bundled up in the data and sent to them. Apple should explain at the time that the data sent to them contains personal information, etc. I hope that is clear. Skip to content.

More information I have explained more technical details in my article here yesterday, which explains my concept of log load, and the factors which affect it, among other things. I will also be developing better tools over the course of the next few days and weeks. Like this: Like Loading Thanks for the reply! One more question: is this information sent to Apple?

What Is a Log File

Or is just kept on the Mac? Secondary navigation Search. Post navigation. Search for: Begin typing your search above and press return to search. Press Esc to cancel.


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Post to Cancel. Use this information to identify which processes are sending or receiving the most data.

The information at the bottom of the Network pane shows total network activity across all apps. The graph also includes a pop-up menu to switch between showing packets or data as a unit of measurement. The color blue shows either the number of packets received per second or the amount of data received per second. The color red shows either the number of packets sent per second or the amount of data sent per second. In macOS High Sierra The Cache pane shows how much cached content that local networked devices have uploaded, downloaded, or dropped over time.

Use the Maximum Cache Pressure information to learn whether to adjust Content Caching settings to provide more disk space to the cache.

how to see logs for a particular date - Apple Community

Lower cache pressure is better. Learn more about cache activity. The graph at the bottom shows total caching activity over time. Choose from the pop-up menu above the graph to change the interval: last hour, 24 hours, 7 days, or 30 days. Overview The processes shown in Activity Monitor can be user apps, system apps used by macOS, or invisible background processes.

My Processes: Processes owned by your macOS user account. System Processes: Processes owned by macOS. Inactive Processes: Running processes that are sleeping. Windowed Processes: Processes that can create a window. These are usually apps. Selected Processes: Processes that you selected in the Activity Monitor window. Applications in the last 8 hours: Apps that were running processes in the last 8 hours.

User: The percentage of CPU capability currently used by apps that you opened, or by the processes those apps opened. Idle: The percentage of CPU capability not being used. The color blue shows the percentage of total CPU capability currently used by user processes. The color red shows the percentage of total CPU capability currently used by system processes.

Threads: The total number of threads used by all processes combined. Processes: The total number of processes currently running. Yellow : Memory resources are still available but are being tasked by memory-management processes, such as compression.

macOS: Activity Monitor

This is the most important indicator that your Mac may need more RAM. The amount of wired memory used by an app is determined by the app's programmer. Look in the Compressed Mem column to see the amount of memory compressed for each process. It's normal to see some activity here. As long as memory pressure is not in the red state, macOS has memory resources available. Energy The Energy pane shows overall energy use and the energy used by each app: Energy Impact: A relative measure of the current energy consumption of the app.