oslo.rootwrap/etc
Dirk Mueller c0a8699820 Run rootwrap with lower fd ulimit by default
On Python 2.x, a subprocess.Popen() with close_fds=True will
fork and then close filedescriptors range(3..os.sysconf("SC_OPEN_MAX")),
which thanks to Kernel PTI (Kaiser patches) is significantly slower
in 2018 when the range is very large. With a soft limit of 1048576,
benchmark.py reports an overhead of ~ 400ms without this patch and 2ms
with the patch applied. This patch adds a configuration option and
sets a more sensible default of 1024 file descriptor limit by default.

Closes-Bug: 1796267
Change-Id: Idd98c183eca3e2df8648fc0f37d27fe9cc6d0563
2018-10-09 12:12:46 +02:00
..
rootwrap.conf.sample Run rootwrap with lower fd ulimit by default 2018-10-09 12:12:46 +02:00