diff --git a/datafusion-partitioned/benchmark.sh b/datafusion-partitioned/benchmark.sh
index e236dbbd2..6226127fc 100755
--- a/datafusion-partitioned/benchmark.sh
+++ b/datafusion-partitioned/benchmark.sh
@@ -3,4 +3,7 @@
 export BENCH_DOWNLOAD_SCRIPT="download-hits-parquet-partitioned"
 export BENCH_DURABLE=yes
 export BENCH_RESTARTABLE=no
+# skip concurrent_qps tests by default as datafusion-cli is configured
+# for single user/single process usage
+export BENCH_CONCURRENT_DURATION="${BENCH_CONCURRENT_DURATION:-0}"
 exec ../lib/benchmark-common.sh
diff --git a/datafusion-partitioned/load b/datafusion-partitioned/load
index 275c2c6ae..357df066a 100755
--- a/datafusion-partitioned/load
+++ b/datafusion-partitioned/load
@@ -1,9 +1,14 @@
 #!/bin/bash
 # datafusion queries the parquet files via an external table at LOCATION
 # 'partitioned' (see create.sql). The shared bench_download fetches the
-# parquet files into CWD; move them into the expected subdir.
+# parquet files into CWD; hard-link them into the expected subdir.
+#
+# Note: don't move them to avoid re-downloading each time
 set -e
 
 mkdir -p partitioned
-mv hits_*.parquet partitioned/ 2>/dev/null || true
+for f in hits_*.parquet; do
+    ln -f "$f" "partitioned/$f"
+done
+
 sync
diff --git a/datafusion/README.md b/datafusion/README.md
index b7f6b5dd4..3a4de18ef 100644
--- a/datafusion/README.md
+++ b/datafusion/README.md
@@ -25,7 +25,7 @@ All with no EBS optimization and no instance store.
 2. Wait for the status checks to pass, then ssh to EC2: `ssh ubuntu@{ip}`
 3. `git clone https://github.com/ClickHouse/ClickBench`
 4. `cd ClickBench/datafusion`
-5. `vi benchmark.sh` and modify the following line to target the DataFusion version
+5. `vi install` and modify the following line to target the DataFusion version
 
     ```bash
     git checkout 53.1.0
diff --git a/datafusion/benchmark.sh b/datafusion/benchmark.sh
index 617422ddc..6df1aea0a 100755
--- a/datafusion/benchmark.sh
+++ b/datafusion/benchmark.sh
@@ -3,4 +3,7 @@
 export BENCH_DOWNLOAD_SCRIPT="download-hits-parquet-single"
 export BENCH_DURABLE=yes
 export BENCH_RESTARTABLE=no
+# skip concurrent_qps tests by default as datafusion-cli is configured
+# for single user/single process usage
+export BENCH_CONCURRENT_DURATION="${BENCH_CONCURRENT_DURATION:-0}"
 exec ../lib/benchmark-common.sh