Additional remarks for tests\README.md

diff --git a/tests/README.md b/tests/README.md
index 2e0aafaa2c42d469afc94f44b35b890691c0b514..7b3795412ae11c507be91b2cfc55d4d717e38fa0 100644 (file)
--- a/tests/README.md
+++ b/tests/README.md
@@ -17,7 +17,13 @@ If a new commit is found it is compiled and a speed benchmark for this commit is
 The results of the speed benchmark are compared to the previous results.
 If compression or decompression speed for one of zstd levels is lower than `lowerLimit` (an optional parameter, default 0.98) the speed benchmark is restarted.
 If second results are also lower than `lowerLimit` the warning e-mail is send to recipients from the list (the `emails` parameter).
-The speed benchmark is not performed until computers' load average is lower than `maxLoadAvg` (an optional parameter, default 0.75).
+
+Additional remarks:
+- To be sure that speed results are accurate the script should be run on a "stable" target system with no other jobs running in parallel
+- Using the script with virtual machines can lead to large variations of speed results
+- The speed benchmark is not performed until computers' load average is lower than `maxLoadAvg` (an optional parameter, default 0.75)
+- The script sends e-mails using `mutt`; if `mutt` is not available it sends e-mails without attachments using `mail`; if both are not available it only prints a warning
+
 
 The example usage with two test files, one e-mail address, and with an additional message:
 ```

diff --git a/tests/test-zstd-speed.py b/tests/test-zstd-speed.py
index bfe004a5f34d11d04579b589e64fca2fb4d3f385..3e5eaa738b1e84145da939605e5287802ff9ea82 100755 (executable)
--- a/tests/test-zstd-speed.py
+++ b/tests/test-zstd-speed.py
@@ -204,7 +204,7 @@ if __name__ == '__main__':
     # check availability of e-mail senders
     have_mutt = does_command_exist("mutt --help");
     have_mail = does_command_exist("mail -V");
-    if not have_mutt and not have_mail
+    if not have_mutt and not have_mail:
         log("WARNING: e-mail senders mail and mutt not found")
 
     # clone ZSTD repo if needed