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typo fix #1

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f6ed07b
fix simple typo
lpmi-13 Jun 25, 2017
3290f2d
update a few more
lpmi-13 Jun 25, 2017
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8 changes: 4 additions & 4 deletions README.md
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Expand Up @@ -194,7 +194,7 @@ The header line gives some statistics, as well as the user / system time:
![rsvp](https://raw.github.com/blitzcode/rsvp/master/img/thread_header_1.png)
![rsvp](https://raw.github.com/blitzcode/rsvp/master/img/thread_header_2.png)

The latter can be used to determine the overall CPU usage through the lifetime of the program as well as the ratio of time spend in system calls versus user code.
The latter can be used to determine the overall CPU usage through the lifetime of the program as well as the ratio of time spent in system calls versus user code.

The actual threads are displayed in 16 slots, going top to bottom and left to right:

Expand Down Expand Up @@ -236,7 +236,7 @@ By default, the panel on the right of the function profile displays the incoming

![rsvp](https://raw.github.com/blitzcode/rsvp/master/img/call_tree_incoming.png)

The incoming tree shows how the selected function is being invoked. The red highlighted line repeats the function name and hit count from the function profile, but also shows its module name. The percentage is proportional to the total time spend in the top function in which the call came through that line. This means it doesn't show the number of calls, but the actual CPU usage for which that path through the call tree is responsible. If no percentage is given, it can be inferred to be 100% of its parent. Connecting lines are omitted for the common single child case. The coloring is based on the same >= 10%, >= 1% and < 1% thresholds as in the function profile. Unresolved symbols are also colored red.
The incoming tree shows how the selected function is being invoked. The red highlighted line repeats the function name and hit count from the function profile, but also shows its module name. The percentage is proportional to the total time spent in the top function in which the call came through that line. This means it doesn't show the number of calls, but the actual CPU usage for which that path through the call tree is responsible. If no percentage is given, it can be inferred to be 100% of its parent. Connecting lines are omitted for the common single child case. The coloring is based on the same >= 10%, >= 1% and < 1% thresholds as in the function profile. Unresolved symbols are also colored red.

The top right corner of the call tree panel shows information about function merging:

Expand All @@ -256,15 +256,15 @@ Pressing `M` switches the call tree into outgoing mode and back.

![rsvp](https://raw.github.com/blitzcode/rsvp/master/img/call_tree_outgoing.png)

The outgoing tree shows the functions invoked from the selected one. A hit count and percentage is displayed for the directly called (first level) functions. The percentage is based on how much time is spend in the called function and its descendants relative to all functions called from the selected one. As an example, a value of 25% for function A would mean a quarter of the time spend in the entire outgoing call tree was spend in A and its descendants. There is no further statistics for the subtree of a direct callee, and its coloring is solely based on the first level function.
The outgoing tree shows the functions invoked from the selected one. A hit count and percentage is displayed for the directly called (first level) functions. The percentage is based on how much time is spent in the called function and its descendants relative to all functions called from the selected one. As an example, a value of 25% for function A would mean a quarter of the time spent in the entire outgoing call tree was spent in A and its descendants. There is no further statistics for the subtree of a direct callee, and its coloring is solely based on the first level function.

The red highlighted line repeats the selected function name and shows three sample counts:

* **O** wn - The number of samples recorded for the selected function itself. The percentage shows the contribution to the total (own + descendants) sample count.
* **D** escendants - The number of samples recorded for the entire outgoing call tree of the selection function (all of its descendants). The percentage shows the contribution to the total (own + descendants) sample count.
* **T** otal - The total number of samples recorded for the selected function and all of its descendants. The percentage shows the total (inclusive) contribution to the function profile.

The outgoing tree in the picture above shows a function where 97.4% of the total time is spend in the descendant functions, and 95.5% of that time goes through a function called mach_vm_read_overwrite. The selected function itself only contributes 2.6%. The total contribution to the function profile of the selected function and all its descendants is 27.3%.
The outgoing tree in the picture above shows a function where 97.4% of the total time is spent in the descendant functions, and 95.5% of that time goes through a function called mach_vm_read_overwrite. The selected function itself only contributes 2.6%. The total contribution to the function profile of the selected function and all its descendants is 27.3%.

### Source view

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