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authorJohn DeNisco <jdenisco@cisco.com>2019-12-10 14:25:50 -0500
committerDave Barach <openvpp@barachs.net>2019-12-11 20:41:24 +0000
commit4f85968a43d3de253e7d69bb0d03e542e4a27f9c (patch)
treef6e77a3089d7e6a5a558dc9f46c618d793e3c039 /docs/gettingstarted/users/configutil/sysinfo.rst
parentd4c709222b67f6c45ee7064637f69de9e9509222 (diff)
docs: Rework the startup configuration section
Type: docs Signed-off-by: John DeNisco <jdenisco@cisco.com> Change-Id: Ic60aac96a4aeb5532f98dfb85c776bf549c0d660 Signed-off-by: Dave Barach <dave@barachs.net>
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-.. _sysinfo:
-
-CPU
----
-
-The CPU section of the system information is a summary of the CPU characteristics of the system.
-It is important to understand the CPU topology and frequency in order to understand what the VPP
-performance characteristics would be.
-
-Threads
--------
-
-It usually is not needed, but VPP can be configured to run on isolated CPUs. In the example shown
-VPP is configured with 2 workers. The main thread is also configured to run on a separate CPU. The
-stats thread will always run on CPU 0. This utility will put the worker threads on CPUs that are
-associated with the ports that are configured.
-
-Grub Command Line
------------------
-
-In general the Grub command line does not need to be changed. If the system is running many processes
-it may be necessary to isolate CPUs for VPP or other processes.
-
-Huge Pages
-----------
-
-As default when VPP is configured the number of huge pages that will be configured will be 1024.
-This may not be enough. This section will show the total system memory and how many are configured.
-
-
-Devices
--------
-
-In the devices section we have the "Total Number of Buffers". This utility allocates the correct
-number of buffers. The number of buffers are calculated from the number of rx queues.
-
-VPP will not use links that are up. Those devices are shown with this utility.
-
-The devices bound to the kernel are not being used by VPP, but can be.
-
-The devices that are being used by VPP are shown with the interface name be used with VPP. The
-socket being used by the VPP port is also shown. Notice in this example the worker thread are
-on the correct CPU. The number of RX, TX Descriptors and TX queues are calculated from the number
-of RX queues.
-
-
-VPP Service Status
-------------------
-
-The VPP service status, will be installed, not installed, running or not.