Monitoring Application Performance on the .NET Compact Framework Part VII - Version 2 performance counters (Part V: JIT Compiler counters)
Today's post is the fifth in the series of .NET Compact Framework v2 performance counters. For a complete listing of the previous installments, please see the list below.
Pre-requisite:
Monitoring Application Performance on the .NET Compact Framework Part I - Enabling performance counters
.NET Compact Framework Version 1:
Monitoring Application Performance on the .NET Compact Framework Part II - Version 1 performance counters
.NET Compact Framework Version 2:
Monitoring Application Performance on the .NET Compact Framework Part III - Version 2 performance counters (Part I: Loader counters)
Monitoring Application Performance on the .NET Compact Framework Part IV - Version 2 performance counters (Part II: Generics counters)
Monitoring Application Performance on the .NET Compact Framework Part V - Version 2 performance counters (Part III: Locks and Threads counters)
Monitoring Application Performance on the .NET Compact Framework Part VI - Version 2 performance counters (Part IV: Garbage Collector counters)
The following table lists all of the performance counters available in version 2 of the .NET Compact Framework. The counters highlighted, in yellow, are the ones I will be talking about today.
| Loader | |
| Total Program Run Time (ms) | |
| App Domains Created | |
| App Domains Unloaded | |
| Assemblies Loaded | |
| Classes Loaded | |
| Methods Loaded | |
| Generics | |
| Closed Types Loaded | |
| Closed Types Loaded per Definition | |
| Open Types Loaded | |
| Closed Methods Loaded | |
| Closed Methods Loaded per Definition | |
| Open Methods Loaded | |
| Locks and Threads | |
| Threads in Thread Pool | |
| Pending Timers | |
| Scheduled Timers | |
| Timers Delayed by Thread Pool Limit | |
| Work Items Queued | |
| Uncontested Monitor.Enter Calls | |
| Contested Monitor.Enter Calls | |
| Garbage Collector | |
| Peak Bytes Allocated (native + manged) | |
| Managed Objects Allocated | |
| Managed Bytes Allocated | |
| Managed String Objects Allocated | |
| Bytes of String Objects Allocated | |
| Garbage Collections (GC) | |
| Bytes Collected By GC | |
| Managed Bytes In Use After GC | |
| Total Bytes In Use After GC | |
| GC Compactions | |
| Code Pitchings | |
| Calls to GC.Collect | |
| GC Latency Time (ms) | |
| Pinned Objects | |
| Objects Moved by Compactor | |
| Objects Not Moved by Compactor | |
| Objects Finalized | |
| Boxed Vlue Types | |
| Process Heap | |
| Short Term Heap | |
| JIT Heap | |
| App Domain Heap | |
| GC Heap | |
| JIT Compiler | |
| Native Bytes Jitted | |
| Methods Jitted | |
| Bytes Pitched | |
| Methods Pitched | |
| Method Pitch Latency Time (ms) | |
| Exceptions | |
| Exceptions Thrown | |
| Interop | |
| Platform Invoke Calls | |
| COM Calls Using a vtable | |
| COM Calls Using IDispatch | |
| Complex Marshaling | |
| Runtime Callable Wrappers | |
| Networking | |
| Socket Bytes Sent | |
| Socket Bytes Received | |
| Windows.Forms | |
| Controls Created | |
| Brushes Created | |
| Pens Created | |
| Bitmaps Created | |
| Regions Created | |
| Fonts Created | |
| Graphics Created (FromImage) | |
| Graphics Created (CreateGraphics) | |
The statistics file includes running totals, the most recent value (last datum), count (n), average (mean), minimum and maximum values for the counters. I've included an example file at the end of this post. For counters where a given column is not relevant, a hyphen (-) is logged.
I will use the following format to describe each counter.
Counter name
Brief description of the counter
Discussion of the contents of relevant columns (total, last datum, n, mean, min, max)
Any additional comments relating to the counter
JIT Compiler Counters
The counters discussed below relate to the .NET Compact Framework's Just-In-Time (JIT) compiler.
Native Bytes Jitted
The size (in bytes) of the native code generated by the JIT compler.
total: Running total of the number of bytes compiledd
last datum: Size of last compilation
n: Number of methods compiled
mean: Average compilation size per method
min: Size of smallest method compilation
max: Size of largest method compilation
Methods Jitted
The number of methods compiled by the JIT compiler.
total: Running count of compiled methods
Bytes Pitched
The size (in bytes) of the JIT compiled code which has been removed from the JIT Heap.
total: Running total of bytes pitched
last datum: Size of last pitching
n: Number of times code was pitched
mean: Average number of bytes pitched
min: The fewest number of bytes pitched
max: The largest number of bytes pitched
Methods Pitched
The number of methods, which have been compiled by the JIT compiler, that have been removed from the JIT Heap.
total: Running count of pitched methods
Unless your application was moved to the background during it's runtime, any value for the Methods Pitched counter indicates the application ran under memory pressure.
Method Pitch Latency Time (ms)
The total time (in milliseconds) spent pitching methods from the JIT Heap.
total: Running total of the time spent pitching code
last datum: Time spent during the most recent code pitch
n: Number of times code was pitched
mean: The average length of in which time a code pitch was performed
min: The briefest amount of time spent pitching code
max: The longest amount of time spent pitching code
Example statistics file
I have highlighted the counters discussed here with a yellow background.
| counter | total | last datum | n | mean | min | max |
| Total Program Run Time (ms) | 2956837 | - | - | - | - | - |
| App Domains Created | 1 | - | - | - | - | - |
| App Domains Unloaded | 1 | - | - | - | - | - |
| Assemblies Loaded | 8 | - | - | - | - | - |
| Classes Loaded | 975 | - | - | - | - | - |
| Methods Loaded | 3015 | - | - | - | - | - |
| Closed Types Loaded | 75 | - | - | - | - | - |
| Closed Types Loaded per Definition | 75 | 3 | 22 | 3 | 1 | 10 |
| Open Types Loaded | 13 | - | - | - | - | - |
| Closed Methods Loaded | 3 | - | - | - | - | - |
| Closed Methods Loaded per Definition | 3 | 1 | 3 | 1 | 1 | 1 |
| Open Methods Loaded | 0 | - | - | - | - | - |
| Threads in Thread Pool | - | 0 | 2 | 0 | 0 | 1 |
| Pending Timers | - | 0 | 4 | 0 | 0 | 1 |
| Scheduled Timers | 2 | - | - | - | - | - |
| Timers Delayed by Thread Pool Limit | 0 | - | - | - | - | - |
| Work Items Queued | 2 | - | - | - | - | - |
| Uncontested Monitor.Enter Calls | 664 | - | - | - | - | - |
| Contested Monitor.Enter Calls | 0 | - | - | - | - | - |
| Peak Bytes Allocated (native + managed) | 2789048 | - | - | - | - | - |
| Managed Objects Allocated | 25883 | - | - | - | - | - |
| Managed Bytes Allocated | 1366120 | 24 | 25883 | 52 | 8 | 135796 |
| Managed String Objects Allocated | 5360 | - | - | - | - | - |
| Bytes of String Objects Allocated | 124412 | - | - | - | - | - |
| Garbage Collections (GC) | 1 | - | - | - | - | - |
| Bytes Collected By GC | 897140 | 897140 | 1 | 897140 | 897140 | 897140 |
| Managed Bytes In Use After GC | - | 147292 | 1 | 147292 | 147292 | 147292 |
| Total Bytes In Use After GC | - | 2621848 | 1 | 2621848 | 2621848 | 2621848 |
| GC Compactions | 0 | - | - | - | - | - |
| Code Pitchings | 0 | - | - | - | - | - |
| Calls to GC.Collect | 0 | - | - | - | - | - |
| GC Latency Time (ms) | 46 | 46 | 1 | 46 | 46 | 46 |
| Pinned Objects | 0 | - | - | - | - | - |
| Objects Moved by Compactor | 0 | - | - | - | - | - |
| Objects Not Moved by Compactor | 0 | - | - | - | - | - |
| Objects Finalized | 82 | - | - | - | - | - |
| Boxed Value Types | 3273 | - | - | - | - | - |
| Process Heap | - | 1280 | 7484 | 198308 | 72 | 330016 |
| Short Term Heap | - | 0 | 6382 | 963 | 0 | 42136 |
| JIT Heap | - | 0 | 6402 | 421097 | 0 | 876976 |
| App Domain Heap | - | 0 | 18679 | 324926 | 0 | 523240 |
| GC Heap | - | 0 | 30 | 527974 | 0 | 1060864 |
| Native Bytes Jitted | 844928 | 208 | 1963 | 430 | 84 | 9684 |
| Methods Jitted | 1963 | - | - | - | - | - |
| Bytes Pitched | 0 | 0 | 0 | 0 | 0 | 0 |
| Methods Pitched | 0 | - | - | - | - | - |
| Method Pitch Latency Time (ms) | 0 | 0 | 0 | 0 | 0 | 0 |
| Exceptions Thrown | 4 | - | - | - | - | - |
| Platform Invoke Calls | 0 | - | - | - | - | - |
| COM Calls Using a vtable | 0 | - | - | - | - | - |
| COM Calls Using IDispatch | 0 | - | - | - | - | - |
| Complex Marshaling | 367 | - | - | - | - | - |
| Runtime Callable Wrappers | 0 | - | - | - | - | - |
| Socket Bytes Sent | 0 | - | - | - | - | - |
| Socket Bytes Received | 0 | - | - | - | - | - |
| Controls Created | 13 | - | - | - | - | - |
| Brushes Created | 23 | - | - | - | - | - |
| Pens Created | 8 | - | - | - | - | - |
| Bitmaps Created | 16 | - | - | - | - | - |
| Regions Created | 0 | - | - | - | - | - |
| Fonts Created | 7 | - | - | - | - | - |
| Graphics Created (FromImage) | 0 | - | - | - | - | - |
| Graphics Created (CreateGraphics) | 0 | - | - | - | - | - |
Up next: Exception, Interop and Networking counters.
Take care,
-- DK
Disclaimer(s):
This posting is provided "AS IS" with no warranties, and confers no rights.