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doc: add documentation for write- and read-quanta

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Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
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Quentin Young 2019-10-16 14:41:54 +00:00
parent 185553660f
commit e312b6c6c7
1 changed files with 20 additions and 0 deletions
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doc/user/bgp.rst
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@ -2167,6 +2167,8 @@ Dumping Messages and Routing Tables
Other BGP Commands
------------------
The following are available in the top level *enable* mode:
.. index:: clear bgp \*
.. clicmd:: clear bgp \*
@ -2202,6 +2204,24 @@ Other BGP Commands
Clear peer using soft reconfiguration in this address-family and sub-address-family.
The following are available in the ``router bgp`` mode:
.. index:: write-quanta (1-64)
.. clicmd:: write-quanta (1-64)
BGP message Tx I/O is vectored. This means that multiple packets are written
to the peer socket at the same time each I/O cycle, in order to minimize
system call overhead. This value controls how many are written at a time.
Under certain load conditions, reducing this value could make peer traffic
less 'bursty'. In practice, leave this settings on the default (64) unless
you truly know what you are doing.
.. index:: read-quanta (1-10)
.. index:: read-quanta (1-10)
Unlike Tx, BGP Rx traffic is not vectored. Packets are read off the wire one
at a time in a loop. This setting controls how many iterations the loop runs
for. As with write-quanta, it is best to leave this setting on the default.
.. _bgp-displaying-bgp-information: