diff --git a/cpp/bandwidth_test_readme.md b/cpp/bandwidth_test_readme.md
new file mode 100644
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+++ b/cpp/bandwidth_test_readme.md
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+sudo fio --name=seq_write_test --filename=/media/hptnvme/fio.test --rw=write --bs=4M --ioengine=libaio --direct=1 --size=100G --numjobs=1 --runtime=100 --time_based --group_reporting --log_avg_msec=1000 --write_bw_log=/media/hptnvme/seq_write_bw
+
+gnuplot -e "
+    set datafile separator ',';
+    set term png size 1200,600 enhanced font 'Arial,10';
+    set output 'fio_bandwidth_chart.png';
+    set title 'Sustained Sequential Write Bandwidth Over Time';
+    set xlabel 'Time (Seconds)';
+    set ylabel 'Bandwidth (MiB/s)';
+    set grid;
+    plot '/media/hptnvme/seq_write_bw_bw.1.log' using (\$1/1000):(\$2/1024) with lines title 'Write Speed' linecolor rgb '#0072B2' lw 2;
+"