diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index 603fde6b2f4..a7b4784be9d 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -86,6 +86,8 @@ jobs:
         ninja -j 4 -d explain
         mpirun -np 4 ./aspect-release --version
         ctest -VV -R performance
+        cd tests
+        .././aspect-release  $GITHUB_WORKSPACE/feature/source/build/tests/performance_nsinker_gmg_idr.x.prm
 
     - name: Configure main
       run: |
@@ -118,7 +120,7 @@ jobs:
       run: |
             rm -rf $GITHUB_WORKSPACE/performance_1_results/;
             mkdir -p $GITHUB_WORKSPACE/performance_1_results/
-    - name: Run performance benchmark 
+    - name: Run performance benchmark 1
       shell: bash
       run: |
             cd $GITHUB_WORKSPACE/cbdr/;
@@ -126,7 +128,19 @@ jobs:
             cat $GITHUB_WORKSPACE/result_1.csv;
             cat $GITHUB_WORKSPACE/result_1.csv | cargo run --release analyze --disable-dynamic-printing > $GITHUB_WORKSPACE/performance_1_results/analyze_1.log ||:;
             cat $GITHUB_WORKSPACE/performance_1_results/analyze_1.log
+    - name: Run performance benchmark 2
+      shell: bash
+      run: |
+            cd $GITHUB_WORKSPACE/cbdr/;
+            time cargo run --release sample --timeout=1800s "main:$GITHUB_WORKSPACE/main/source/build/./aspect-release  $GITHUB_WORKSPACE/feature/source/build/tests/performance_nsinker_gmg_idr.x.prm" "feature:$GITHUB_WORKSPACE/feature/source/build/./aspect-release $GITHUB_WORKSPACE/feature/source/build/tests/performance_nsinker_gmg_idr.x.prm" > $GITHUB_WORKSPACE/result_2.csv;
+            cat $GITHUB_WORKSPACE/result_2.csv;
+            cat $GITHUB_WORKSPACE/result_2.csv | cargo run --release analyze --disable-dynamic-printing > $GITHUB_WORKSPACE/performance_1_results/analyze_2.log ||:;
+            cat $GITHUB_WORKSPACE/performance_2_results/analyze_2.log
     - uses: actions/upload-artifact@v7
       with:
         name: performance_1_results
         path: performance_1_results/
+    - uses: actions/upload-artifact@v7
+      with:
+        name: performance_2_results
+        path: performance_2_results/
diff --git a/.github/workflows/post_performance_results.yml b/.github/workflows/post_performance_results.yml
index 3c2443f4b06..9c4f1770c51 100644
--- a/.github/workflows/post_performance_results.yml
+++ b/.github/workflows/post_performance_results.yml
@@ -43,7 +43,7 @@ jobs:
               per_page: 100,
             });
 
-            const names = Array.from({ length: 1 }, (_, i) => `performance_${i + 1}_results`);
+            const names = Array.from({ length: 2 }, (_, i) => `performance_${i + 1}_results`);
 
             for (const name of names) {
               const artifact = data.artifacts.find(a => a.name === name);
@@ -67,7 +67,7 @@ jobs:
       - name: Unzip artifacts
         run: |
           set -e
-          for i in $(seq 1 8); do
+          for i in $(seq 1 2); do
             f="performance_${i}_results.zip"
             if [ -f "$f" ]; then
               unzip -o "$f"
@@ -96,6 +96,27 @@ jobs:
             echo "wall_time_1_CI_low=$(echo "$line" | sed 's/\[/ /g; s/\]/ /g' | awk '{print $8}')"
             echo "wall_time_1_CI_high=$(echo "$line" | sed 's/\[/ /g; s/\]/ /g' | awk '{print $10}')"
           } >> "$GITHUB_OUTPUT"
+
+    - name: Retrieve performance benchmark 2
+      id: retrieve_performance_2
+      env:
+        benchmark_number: 2
+      run: |
+          set -e
+          file="$GITHUB_WORKSPACE/performance_2_results/analyze_2.log"
+          cat "$file"
+          line=$(grep wall_time "$file" | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g')
+          samples=$(grep samples "$file" | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g')
+          {
+            echo "wall_time_2_main_mean=$(echo "$line" | awk '{print $2}')"
+            echo "wall_time_2_main_std_dev=$(echo "$line" | awk '{print $4}')"
+            echo "wall_time_2_main_samples=$(echo "$samples" | awk '{print $2}')"
+            echo "wall_time_2_feature_mean=$(echo "$line" | awk '{print $5}')"
+            echo "wall_time_2_feature_std_dev=$(echo "$line" | awk '{print $7}')"
+            echo "wall_time_2_feature_samples=$(echo "$samples" | awk '{print $3}')"
+            echo "wall_time_2_CI_low=$(echo "$line" | sed 's/\[/ /g; s/\]/ /g' | awk '{print $8}')"
+            echo "wall_time_2_CI_high=$(echo "$line" | sed 's/\[/ /g; s/\]/ /g' | awk '{print $10}')"
+          } >> "$GITHUB_OUTPUT"
     - name: Find Comment
       id: find_comment
       continue-on-error: true
@@ -115,4 +136,5 @@ jobs:
             | Benchmark | Main | Feature | Difference (99.9% CI) |
             | --- | --- | --- | --- |
             | Continental extension | ${{ steps.retrieve_performance_1.outputs.wall_time_1_main_mean }} ± ${{ steps.retrieve_performance_1.outputs.wall_time_1_main_std_dev }} (s=${{ steps.retrieve_performance_1.outputs.wall_time_1_main_samples }})| ${{ steps.retrieve_performance_1.outputs.wall_time_1_feature_mean }} ± ${{ steps.retrieve_performance_1.outputs.wall_time_1_feature_std_dev }} (s=${{ steps.retrieve_performance_1.outputs.wall_time_1_feature_samples }})| ${{ steps.retrieve_performance_1.outputs.wall_time_1_CI_low }} .. ${{ steps.retrieve_performance_1.outputs.wall_time_1_CI_high }} |
+            | GMG nsinker | ${{ steps.retrieve_performance_2.outputs.wall_time_2_main_mean }} ± ${{ steps.retrieve_performance_2.outputs.wall_time_2_main_std_dev }} (s=${{ steps.retrieve_performance_2.outputs.wall_time_2_main_samples }})| ${{ steps.retrieve_performance_2.outputs.wall_time_2_feature_mean }} ± ${{ steps.retrieve_performance_2.outputs.wall_time_2_feature_std_dev }} (s=${{ steps.retrieve_performance_2.outputs.wall_time_2_feature_samples }})| ${{ steps.retrieve_performance_2.outputs.wall_time_2_CI_low }} .. ${{ steps.retrieve_performance_2.outputs.wall_time_2_CI_high }} |
         edit-mode: replace
diff --git a/tests/performance_nsinker_gmg_idr.cc b/tests/performance_nsinker_gmg_idr.cc
new file mode 100644
index 00000000000..3414e98ba87
--- /dev/null
+++ b/tests/performance_nsinker_gmg_idr.cc
@@ -0,0 +1,21 @@
+/*
+  Copyright (C) 2022 by the authors of the ASPECT code.
+
+  This file is part of ASPECT.
+
+  ASPECT is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2, or (at your option)
+  any later version.
+
+  ASPECT is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with ASPECT; see the file LICENSE.  If not see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#include "../benchmarks/nsinker/nsinker.cc"
diff --git a/tests/performance_nsinker_gmg_idr.prm b/tests/performance_nsinker_gmg_idr.prm
new file mode 100644
index 00000000000..7dce651ce6b
--- /dev/null
+++ b/tests/performance_nsinker_gmg_idr.prm
@@ -0,0 +1,25 @@
+# MPI: 4
+# Nsinker benchmark using geometric multigrid preconditioner
+# with an IDR(2) solver
+
+set Dimension = 3
+
+include $ASPECT_SOURCE_DIR/benchmarks/nsinker/nsinker_gmg.prm
+
+
+subsection Material model
+  set Material averaging = harmonic average only viscosity
+end
+
+subsection Solver parameters
+  subsection Stokes solver parameters
+    set Stokes solver type = block GMG
+    set Krylov method for cheap solver steps = IDR(s)
+    set IDR(s) parameter = 2
+  end
+end
+
+subsection Mesh refinement
+  set Initial adaptive refinement        = 0
+  set Initial global refinement          = 6
+end
diff --git a/tests/performance_nsinker_gmg_idr/screen-output b/tests/performance_nsinker_gmg_idr/screen-output
new file mode 100644
index 00000000000..e4a33a0d3e9
--- /dev/null
+++ b/tests/performance_nsinker_gmg_idr/screen-output
@@ -0,0 +1,24 @@
+
+Loading shared library <./libperformance_nsinker_gmg_idr.release.so>
+
+Number of active cells: 262,144 (on 7 levels)
+Number of degrees of freedom: 8,861,381 (6,440,067+274,625+2,146,689)
+
+*** Timestep 0:  t=0 seconds, dt=0 seconds
+   Solving Stokes system (GMG)... 
+     GMG coarse size A: 81, coarse size S: 8
+     GMG levels: 7
+     Viscosity range: 0.01 - 100
+     GMG workload imbalance: 1.00001
+     Stokes solver (IDR(2)): 12+0 iterations.
+     Schur complement preconditioner: 34+0 iterations.
+     A block preconditioner: 34+0 iterations.
+
+   Postprocessing:
+     System matrix memory consumption:  25.77 MB
+     Writing graphical output:          output-performance_nsinker_gmg_idr/solution/solution-00000
+
+Termination requested by criterion: end time
+
+
+