docs(linux): AM64X: Update PREEMPT_RT perf numbers

Update the AM64x latency numbers for the SDK 10.1 release

Signed-off-by: Bryan Brattlof <[email protected]>

source/devices/AM64X/linux/RT_Linux_Performance_Guide.rst

@@ -51,18 +51,23 @@ It is one of the most frequently used tools for evaluating the relative performa
 Some performance tests which use Cyclictest are System benchmarking, Latency debugging with tracing and
 approximating application performance.
 
-Test command for running stress-ng and cyclictest together
+Test commands used for running stress-ng and cyclictest together
 
-``stress-ng --cpu-method=all -c 4 &``
+.. code:: console
 
-``cyclictest -m -Sp98 -D6h -h400 -i200 -q``
+   stress-ng --cpu-method=all -c 4 &
+   cyclictest -m -Sp80 -D6h -h400 -i200 -M -q
+
+The latencies observed with this DK are summarized below:
 
 .. csv-table::
-    :header: "Latencies", "am64xx-hsevm:per-core"
+   :header: "Latencies","CPU 0","CPU 1"
+
+   "Minimum (usec)","6","6"
+   "Average (usec)","8","8"
+   "Maximum (usec)","77","105"
 
-    "Minimum (usec)","6,6"
-    "Average (usec)","8,9"
-    "Maximum (usec)","49,66"
+.. image:: img/rt-cpu-method-all-latency-histogram.png
 
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