build_a_blog: bench, main errors

bench.sh

@@ -16,6 +16,11 @@ echo "INFO: number of *.md files $(find ./posts/ -iname '*.md' | wc -l)" 1>&2
 echo "INFO: number of *.html files $(find ./posts/ -iname '*.html' | wc -l)" 1>&2
 echo "INFO: running" 1>&2
 time -p python main.py 2>/dev/null
+rc=$?
+if [[ "$rc" != "0" ]]; then
+	echo "ERROR: program exited with $rc" 1>&2
+	exit 1
+fi
 echo "INFO: number of *.html files $(find ./posts/ -iname '*.html' | wc -l)" 1>&2
 echo "INFO: cleanup __bench files" 1>&2
 rm -f ./posts/*__bench*

main.py

@@ -59,7 +59,7 @@ def render_posts():
 	with Pool(processes=cpu_count) as pool:
 		posts = pool.map(render_post, files)
 
-	logging.info("render_posts result: %s", res)
+	logging.info("render_posts result: %s", posts)
 	return posts
 
 def posts_list_html(posts):

posts/build_a_blog.md

@@ -757,6 +757,11 @@ echo "INFO: number of *.md files $(find ./posts/ -iname '*.md' | wc -l)" 1>&2
 echo "INFO: number of *.html files $(find ./posts/ -iname '*.html' | wc -l)" 1>&2
 echo "INFO: running" 1>&2
 time -p python main.py 2>/dev/null
+rc=$?
+if [[ "$rc" != "0" ]]; then
+	echo "ERROR: program exited with $rc" 1>&2
+	exit 1
+fi
 echo "INFO: number of *.html files $(find ./posts/ -iname '*.html' | wc -l)" 1>&2
 echo "INFO: cleanup __bench files" 1>&2
 rm -f ./posts/*__bench*
@@ -807,7 +812,7 @@ So here is the diff to make that happen:
 
 ```diff
 diff --git a/main.py b/main.py
-index 52ce57b..91d852b 100644
+index 52ce57b..95b650d 100644
 --- a/main.py
 +++ b/main.py
 @@ -1,9 +1,11 @@
@@ -842,7 +847,7 @@ index 52ce57b..91d852b 100644
 +	with Pool(processes=cpu_count) as pool:
 +		posts = pool.map(render_post, files)
 
-+	logging.info("render_posts result: %s", res)
++	logging.info("render_posts result: %s", posts)
  	return posts
 
  def posts_list_html(posts):
@@ -857,9 +862,9 @@ INFO: removing old __bench files
 INFO: number of *.md files 102
 INFO: number of *.html files 2
 INFO: running
-real 0.21
-user 1.64
-sys 0.14
+real 0.27
+user 1.82
+sys 0.15
 INFO: number of *.html files 102
 INFO: cleanup __bench files
 
@@ -868,16 +873,14 @@ INFO: removing old __bench files
 INFO: number of *.md files 1002
 INFO: number of *.html files 2
 INFO: running
-real 1.12
-user 15.69
-sys 0.24
+real 1.25
+user 16.68
+sys 0.52
 INFO: number of *.html files 1002
 INFO: cleanup __bench files
 ```
 
-So down to <1s for 1000 posts with 16 cores (`multiprocessing.Pool` uses cpu core count by default if not passed) .
-
-🎉 that's cool!
+Down to 1.25s for 1000 posts 🎉
 
 [1]: https://crystal-lang.org/
 [2]: https://github.com/crystal-lang/crystal/releases/tag/0.31.0