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Drop support for cpu_affinity (#5525)

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This has no useful purpose on python3, and is generally a source of confusion.
This commit is contained in:
Richard van der Hoff 2019-06-22 02:01:55 +01:00 • committed by Amber Brown
parent e1a795758c
commit 6cda36777b
6 changed files with 2 additions and 74 deletions
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23
docs/sample_config.yaml
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@ -23,29 +23,6 @@ server_name: "SERVERNAME"
#
pid_file: DATADIR/homeserver.pid
# CPU affinity mask. Setting this restricts the CPUs on which the
# process will be scheduled. It is represented as a bitmask, with the
# lowest order bit corresponding to the first logical CPU and the
# highest order bit corresponding to the last logical CPU. Not all CPUs
# may exist on a given system but a mask may specify more CPUs than are
# present.
#
# For example:
# 0x00000001 is processor #0,
# 0x00000003 is processors #0 and #1,
# 0xFFFFFFFF is all processors (#0 through #31).
#
# Pinning a Python process to a single CPU is desirable, because Python
# is inherently single-threaded due to the GIL, and can suffer a
# 30-40% slowdown due to cache blow-out and thread context switching
# if the scheduler happens to schedule the underlying threads across
# different cores. See
# https://www.mirantis.com/blog/improve-performance-python-programs-restricting-single-cpu/.
#
# This setting requires the affinity package to be installed!
#
#cpu_affinity: 0xFFFFFFFF
# The path to the web client which will be served at /_matrix/client/
# if 'webclient' is configured under the 'listeners' configuration.
#