ccbc6dacac
Claudiu Manoil says: ==================== enetc: Add adaptive interrupt coalescing Apart from some related cleanup patches, this set introduces in a straightforward way the support needed to enable and configure interrupt coalescing for ENETC. Patch 5 introduces the support needed for configuring the interrupt coalescing parameters and for switching between moderated (int. coalescing) and per-packet interrupt modes. When interrupt coalescing is enabled the Rx/Tx time thresholds are configurable, packet thresholds are fixed. To make this work reliably, patch 5 uses the traffic pause procedure introduced in patch 2. Patch 6 adds DIM (Dynamic Interrupt Moderation) to implement adaptive coalescing based on time thresholds, for the Rx 'channel'. On the Tx side a default optimal value is used instead, optimized for TCP traffic over 1G and 2.5G links. This default 'optimal' value can be overridden anytime via 'ethtool -C tx-usecs'. netperf -t TCP_MAERTS measurements show a significant CPU load reduction correlated w/ reduced interrupt rates. For the measurement results refer to the comments in patch 6. v2: Replaced Tx DIM with predefined optimal value, giving better results. This was also suggested by Jakub (cc). Switched order of patches 4 and 5, for better grouping. v3: minor cleanup/improvements ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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| arch | ||
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| net | ||
| samples | ||
| scripts | ||
| security | ||
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| tools | ||
| usr | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
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| README | ||
README
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.