Developer: Chainfire
Version: 1.10
Requires Android: 2.2 and up
Category: Tools
Size: 98 KB
Price:
Average Rating: 4.9 / 5.0
PerfMon is a "floating" performance monitor tool. It shows on top of any
other app you are running. Aside from being useful for powerusers
wanting to know what their device is doing, it is a great tool to use
during debugging and profiling.
PerfMon Offers Four Categories of Metrics
- Foreground App
- CPU
- Disk I/O
- Network I/O
PerfMon
will also show you a new and unique-to-PerfMon performance metric: "CPU
Capacity Usage". The CPU usage percentage traditionally used to measure
and compare how much of the computational resources an app (or the
entire device) is currently using does not make sense in a mobile
multi-core setting. The capacity metric will take the CPU usage and
scale it to what it would be if all cores were running at full capacity.
For
example, if you have a 1.6 Ghz quad-core running a light app, it could
be using 10% CPU with only one of the four cores active, and that core
running at 200mhz. If you translate that to all four cores running at
1.6ghz, that app is using only 0.3% of total CPU capacity.
It's the only CPU Usage metric that makes any sense!
Foreground App - This window shows metric of the currently foreground (running and visible) application:
- Application title
- Application package name
- Memory usage total (in megabytes)
- Dalvik, Native, and Other memory usage (in megabytes)
- Overall CPU Usage (normal percentage and capacity)
- User and System CPU Usage (normal percentage)
CPU - This window displays overall CPU metrics:
- Capacity usage and current divider
- Overall CPU usage percentage
- Per-core CPU usage percentage and megahertz
Disk I/O - This
window displays the disk I/O metrics of your MMC-based storage devices.
Usually, mmcblk0 is your internal flash, and mmcblk1 is your removable
SD-card. Please note that currently MTD-based storage is not supported
by this display. Also note that the metrics displayed are raw I/O, so if
the OS has I/O requests buffered/cached, you will not see anything
happen here.
- Per-device read and write kilobytes/second
Network I/O - This window displays the network I/O metrics of your network interfaces.
- Per-interface transmit (Tx) and receive (Rx) kilobytes/second
For more info, visit PerfMon - Performance Monitor on Google Play.
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