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-rw-r--r--src/tools/fsync/README3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/tools/fsync/README b/src/tools/fsync/README
index 570708ed510..f93f649b0ef 100644
--- a/src/tools/fsync/README
+++ b/src/tools/fsync/README
@@ -2,4 +2,5 @@ This program tests fsync. The tests are described as part of the program output
Usage: test_fsync [-f filename] [loops]
-Loops defaults to 1000.
+Loops defaults to 1000. The default output file is /var/tmp/test_fsync.out.
+Consider that /tmp or /var/tmp might be memory-based file systems.