Update profiling info in guide

Author: fsimonis

pages/docs/couple-your-code/couple-your-code-porting-v2-3.md

@@ -117,7 +117,6 @@ A specific solver should only be configured if you want to force preCICE to use
 - Remove all timings in the mapping configuration `<mapping: ... timing="initial/onadvance/ondemand" />`.
 
 <!--
-- Add `<profiling mode="all" />` after the `<log>` tag if you need profiling data.
 - Replace `<export:vtk />` for parallel participants with `<export:vtu />` or `<export:vtp />`.
 -->
 
@@ -137,6 +136,6 @@ A specific solver should only be configured if you want to force preCICE to use
 
 ## Profiling
 
-<!--
-- New modes for profiling data: `none`, `fundamental` (default), `all`.
--->
+- There are three profiling modes now: `off`, `fundamental` (default), `all`.
+- Add `<profiling mode="all" />` inside the `<precice-configuration>` tag if you need detailed profiling data.
+- If you relied on `sync-mode="on"`, remove it from `<precice-configuration>` and add it to the profiling tag `<profiling synchronize="true" />`.

pages/docs/tooling/tooling-performance-analysis.md

@@ -39,11 +39,11 @@ Measuring the runtime of such operations can be tricky, as the time spent waitin
 Synchronizing all ranks using a barrier solves the issue, but has an impact on performance.
 
 To keep this waiting component of the overall measurement to a minimum without affecting performance, we added a configuration option to toggle the synchonization before required events.
-Use the `sync-mode` attribute to enable such synchonization if you need it.
+Use the `synchronize` attribute to enable such synchronization if you need it.
 
 ```xml
-<precice-configuration sync-mode="1">
-    ...
+<precice-configuration>
+    <profiling synchronize="true" />
 </precice-configuration>
 ```
 
@@ -87,8 +87,8 @@ To prevent any write operations of the filesystem until the end of the simulatio
 To profile blocking operations:
 
 ```xml
-<precice-configuration sync-mode="1">
-  <profiling mode="all" />
+<precice-configuration>
+  <profiling mode="all" synchronize="true" />
 </precice-configuration>
 ```