From 37e5c34111c4791d0ec06ce32d7d7843b648b66d Mon Sep 17 00:00:00 2001
From: Ciro Santilli <ciro.santilli@gmail.com>
Date: Thu, 1 Oct 2020 04:00:03 +0000
Subject: [PATCH] other-test-repos/many-commits-fast-import.py

---
 other-test-repos/README.md                   |  4 +-
 other-test-repos/many-commits-fast-import.py | 45 ++++++++++++++++++++
 other-test-repos/many-commits.py             |  2 +
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100755 other-test-repos/many-commits-fast-import.py

diff --git a/other-test-repos/README.md b/other-test-repos/README.md
index b7797b8..2ccb264 100644
--- a/other-test-repos/README.md
+++ b/other-test-repos/README.md
@@ -7,7 +7,9 @@ Tests that are very large will not be included here to keep this repository smal
 - <https://github.com/cirosantilli/test-deep>
 - <https://github.com/cirosantilli/test-diff-many-files>
 - <https://github.com/cirosantilli/test-pr-many-commits>
-- <https://github.com/cirosantilli/test-many-commits-1m> [many-commits.py](many-commits.py)
+- <https://github.com/cirosantilli/test-many-commits-1m>
+    - [many-commits.py](many-commits-fast-import.py) superior
+    - [many-commits.py](many-commits.py) inferior
 - <https://github.com/cirosantilli/test-asciidoc-large-variable>
 
 There are also some tests that could not be included here conveniently:
diff --git a/other-test-repos/many-commits-fast-import.py b/other-test-repos/many-commits-fast-import.py
new file mode 100755
index 00000000..a4ba643
--- /dev/null
+++ b/other-test-repos/many-commits-fast-import.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+'''
+This is a superior and simpler alternative to many-commits.py.
+
+Usage:
+
+rm -rf many-commits.tmp
+mkdir -p many-commits.tmp
+cd many-commits.tmp
+git init
+../many-commits-fast-import.py [ncommits=10] | git fast-import
+
+Lenovo ThinkPad P51 SSD generation time for 2M commits: 33s. Disk usage: 270.2 MiB. Push size is smaller for some reason.
+'''
+
+import sys
+
+print('''blob
+mark :1
+data 1
+a
+reset refs/heads/master
+commit refs/heads/master
+mark :2
+author  <> 0 +0000
+committer  <> 0 +0000
+data 1
+
+M 100644 :1 a
+''')
+
+if len(sys.argv) > 1:
+    n = int(sys.argv[1])
+else:
+    n = 10
+for i in range(2, n + 1):
+    print('''commit refs/heads/master
+mark :{}
+author  <> 0 +0000
+committer  <> 0 +0000
+data 1
+
+from :{}
+'''.format(i + 1, i))
diff --git a/other-test-repos/many-commits.py b/other-test-repos/many-commits.py
index 5dccf88..3c70202 100755
--- a/other-test-repos/many-commits.py
+++ b/other-test-repos/many-commits.py
@@ -1,6 +1,8 @@
 #!/usr/bin/env python3
 
 """
+many-commits-fast-import.py, is a simpler and better alternative to this, just use that!!!
+
 Packing is important, or else deleting and pushing the generated repository could take a **huge** ammount of time.
 
 This method gets slower as it goes. 1M are fast to generate, but 10M require running for 24h nonstop.