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-rw-r--r--Makefile7
1 files changed, 4 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index bd1dc35dcfc9..1eb3a5307e9b 100644
--- a/Makefile
+++ b/Makefile
@@ -62,9 +62,10 @@
# Most of the user-driven targets (as listed above) are implemented in
# Makefile.inc1. The exceptions are universe, tinderbox and targets.
#
-# If you want to build your system from source be sure that /usr/obj has
-# at least 6GB of diskspace available. A complete 'universe' build requires
-# about 100GB of space.
+# If you want to build your system from source, be sure that /usr/obj has
+# at least 6 GB of disk space available. A complete 'universe' build of
+# r340283 (2018-11) required 167 GB of space. ZFS lz4 compression
+# achieved a 2.18x ratio, reducing actual space to 81 GB.
#
# For individuals wanting to build from the sources currently on their
# system, the simple instructions are: