[ci] More workers for test examples (#3702)

### Changes

Parallel tests on 6 workers to run all tests to complete in around 30
minutes.
Sort durations 

### Reason for changes

Speed up job

### Tests

https://github.com/openvinotoolkit/nncf/actions/runs/18867363467 (failed
as in nightly)

Author: AlexanderDokuchaev

.github/workflows/examples.yml

@@ -26,13 +26,13 @@ concurrency:
 
 jobs:
   examples-cpu:
-    name: Test examples CPU [${{ matrix.group }}/4]
+    name: Test examples CPU [${{ matrix.group }}/6]
     runs-on: ubuntu-latest-16-cores
     timeout-minutes: 80
     strategy:
       fail-fast: false
       matrix:
-        group: [1, 2, 3, 4]
+        group: [1, 2, 3, 4, 5, 6]
     defaults:
       run:
         shell: bash
@@ -64,7 +64,7 @@ jobs:
             --junit-xml=pytest-results.xml \
             --durations-path=tests/cross_fw/examples/.test_durations \
             --splitting-algorithm=least_duration \
-            --splits 4 \
+            --splits 6 \
             --group ${{ matrix.group }} \
             ${{ github.event.inputs.pytest_args || '' }}
           ret=$?
@@ -149,13 +149,13 @@ jobs:
 
   examples-win-cpu:
     timeout-minutes: 80
-    name: Test examples CPU Windows [${{ matrix.group }}/4]
+    name: Test examples CPU Windows [${{ matrix.group }}/6]
     runs-on: windows-2025-16-core
     if: ${{ github.event_name != 'workflow_dispatch' || github.event.inputs.skip_windows == 'false' }}
     strategy:
       fail-fast: false
       matrix:
-        group: [1, 2, 3, 4]
+        group: [1, 2, 3, 4, 5, 6]
     defaults:
       run:
         shell: bash
@@ -189,7 +189,7 @@ jobs:
             --junit-xml=pytest-results.xml \
             --durations-path=tests/cross_fw/examples/.test_durations \
             --splitting-algorithm=least_duration \
-            --splits 4 \
+            --splits 6 \
             --group ${{ matrix.group }} \
             ${{ github.event.inputs.pytest_args || '' }}
           ret=$?

tests/cross_fw/examples/.test_durations

@@ -1,26 +1,26 @@
 {
     "tests/cross_fw/examples/test_examples.py::test_examples[codebook_llm_compression]": 184,
-    "tests/cross_fw/examples/test_examples.py::test_examples[fp8_llm_quantization]": 229.69,
+    "tests/cross_fw/examples/test_examples.py::test_examples[fp8_llm_quantization]": 229,
     "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_distillation_qat_with_lora]": 665,
     "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_fx]": 394,
     "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_onnx]": 404,
     "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_qat_with_nls]": 1030,
-    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_synthetic]": 873.780,
-    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression]": 222.974,
-    "tests/cross_fw/examples/test_examples.py::test_examples[llm_tune_params]": 1018.932,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_onnx_mobilenet_v2]": 178.509,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_onnx_yolo8_quantize_with_accuracy_control]": 292.766,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_anomaly_stfpm_quantize_with_accuracy_control]": 443.025,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_mobilenet_v2_quantize]": 169.789,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_yolo8_quantize_with_accuracy_control]": 205.533,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_yolo8_quantize]": 170.593,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_tensorflow_mobilenet_v2]": 149.202,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_fx_resnet18]": 412.243,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_mobilenet_v2]": 192.227,
-    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_ssd300_vgg16]": 231.613,
-    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_tensorflow_mobilenet_v2]": 1500.00,
-    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_torch_anomalib]": 478.797,
-    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_torch_resnet18]": 1251.144,
-    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_scale_estimation_onnx]": 836.73,
-    "tests/cross_fw/examples/test_examples.py::test_examples[magnitude_pruning_torch_resnet18]": 907
+    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_scale_estimation_onnx]": 836,
+    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression_synthetic]": 873,
+    "tests/cross_fw/examples/test_examples.py::test_examples[llm_compression]": 222,
+    "tests/cross_fw/examples/test_examples.py::test_examples[llm_tune_params]": 1018,
+    "tests/cross_fw/examples/test_examples.py::test_examples[magnitude_pruning_torch_resnet18]": 907,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_onnx_mobilenet_v2]": 178,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_onnx_yolo8_quantize_with_accuracy_control]": 292,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_anomaly_stfpm_quantize_with_accuracy_control]": 443,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_mobilenet_v2_quantize]": 169,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_yolo8_quantize_with_accuracy_control]": 205,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_openvino_yolo8_quantize]": 170,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_tensorflow_mobilenet_v2]": 149,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_fx_resnet18]": 412,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_mobilenet_v2]": 192,
+    "tests/cross_fw/examples/test_examples.py::test_examples[post_training_quantization_torch_ssd300_vgg16]": 231,
+    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_tensorflow_mobilenet_v2]": 1500,
+    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_torch_anomalib]": 478,
+    "tests/cross_fw/examples/test_examples.py::test_examples[quantization_aware_training_torch_resnet18]": 1251
 }