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[ Upstream commit05785adf6e] Current default non-adaptive tx interrupt moderation interval is 196 us. This value is too high and might cause the tx queue to fill up. In this commit we set the default non-adaptive tx interrupt moderation interval to 64 us in order to: 1. Reduce the probability of the queue filling-up (when compared to the current default value of 196 us). 2. Reduce unnecessary tx interrupt overhead (which happens if we set the default tx interval to 0). We determined experimentally that 64 us is an optimal value that reduces interrupt rate by more than 20% without affecting performance. Fixes:1738cd3ed3("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.