X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=linux-tests%2Fplot_data.sh;h=e7482bc49f8650fece50e9d9e1defffd6616fb32;hp=23a22024c15ff90408fab6b7483b37e88014374a;hb=7715144e7d55b2854f907001c432348e4caa5954;hpb=1f4323687427e7b156a7391bea3f1f4e55d90838

diff --git a/linux-tests/plot_data.sh b/linux-tests/plot_data.sh
index 23a2202..e7482bc 100755
--- a/linux-tests/plot_data.sh
+++ b/linux-tests/plot_data.sh
@@ -1,5 +1,92 @@
 #!/bin/sh
-# plot_data.sh runs the plot, updating it in realtime
+# Script that gathers data erased vs free data from /proc/yaffs_stats and simultaneously \
+# plots it using gnuplot.
 
-./drive_gnuplot.sh | gnuplot
+
+#Gather settings
+log_file=data
+gather_delay=1
+
+done_file=plot_done
+
+# Plot settings
+trunc_file=trunc_data
+plot_samples=1000
+plot_delay=2
+
+
+
+
+
+# Gathering task
+
+gather_data() {
+i=0;
+rm -f $log_file
+
+while [ ! -e $done_file ] ; do
+	xx='1'
+	erased_blocks='2'
+	while [ "$xx" !=  "$erased_blocks" ] ; do
+		xx=$(cat /proc/yaffs | grep n_erased_blocks | cut -d ' ' -f 2)
+		erased_blocks=$(cat /proc/yaffs | grep n_erased_blocks | cut -d ' ' -f 2)
+		if [ -z "$xx" ] ; then
+			xx='bad value'
+		fi
+	done
+	xx='1'
+	free_chunks='2'
+	while [ "$xx" != "$free_chunks" ] ; do
+		xx=$(cat /proc/yaffs | grep n_free_chunks | cut -d ' ' -f 2)
+		free_chunks=$(cat /proc/yaffs | grep n_free_chunks | cut -d ' ' -f 2)
+		if [ -z "$xx" ] ; then
+			xx='bad value'
+		fi
+	done
+	erased_chunks=$(($erased_blocks*64))
+	str=" $i, 0, $free_chunks, $erased_chunks"
+	echo $str
+	echo $str  >> $log_file
+	i=$(($i+1))
+	sleep $gather_delay
+done
+}
+
+
+# Plotting task
+# Periodically creates a truncated version of the log file and
+# outputs commands into gnuplot, thus driving gnuplot
+
+drive_gnuplot(){
+sleep 5
+tail -$plot_samples $log_file > $trunc_file
+
+plot_str=" plot '$trunc_file' using 1:3 with linespoints title 'free', '' using 1:4 with linespoints title 'erased'"
+
+echo "set title 'yaffs free space vs erased space'"
+echo "set xlabel 'seconds'"
+echo "set ylabel 'chunks'"
+
+
+echo $plot_str
+ 
+while [ ! -e $done_file ]; do
+sleep $plot_delay
+tail -$plot_samples $log_file > $trunc_file
+echo replot
+done
+}
+
+
+rm -f $done_file
+trap "touch $done_file" INT
+
+echo "Start gathering task in background"
+gather_data &
+echo "Run plotting task"
+drive_gnuplot | gnuplot
+
+wait
+
+echo "All done"