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authorMattias Andrée <maandree@kth.se>2017-06-13 21:13:25 +0200
committerMattias Andrée <maandree@kth.se>2017-06-13 21:13:25 +0200
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Signed-off-by: Mattias Andrée <maandree@kth.se>
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@@ -2,11 +2,12 @@ Despite unix(7) offering much more features than pipe(7),
it is much faster. There is however two features unix(7)
does not have: there is no guarantee that small writes are
atomic, there is not support for splice(2)/tee(2) which
-is extremely efficient, and file descriptor hijacking is
-not support. The latter is a double-sided sword: it [the
-lack of support] increases security, but other processes'
-file cannot be opened and programs must treat /dev/fd/
-paths especially.
+is extremely efficient, vmsplice(2) and changing the
+capacity (neither of which improves the performance
+sufficiently), and file descriptor hijacking is not support.
+The latter is a double-sided sword: it [the lack of support]
+increases security, but other processes' file cannot be
+opened and programs must treat /dev/fd/ paths especially.
![performance graph](graph.png)