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Heng Qi says: ==================== ethtool: provide the dim profile fine-tuning channel The NetDIM library provides excellent acceleration for many modern network cards. However, the default profiles of DIM limits its maximum capabilities for different NICs, so providing a way which the NIC can be custom configured is necessary. Currently, the way is based on the commonly used "ethtool -C". For example, on the server side, the virtio-net NIC with rx dim enabled has 8 queues and runs nginx. The client uses the following command to send traffic to the server: ./wrk http://server_ip:80 -c 64 -t 5 -d 30 Then adjust the default rx-profile for server dim to {.usec = 1, .pkts = 256, .comps = n/a,}, {.usec = 8, .pkts = 256, .comps = n/a,}, {.usec = 30, .pkts = 256, .comps = n/a,}, {.usec = 64, .pkts = 256, .comps = n/a,}, {.usec = 128, .pkts = 256, .comps = n/a,} The server PPS is improved by 20%+. ==================== Link: https://patch.msgid.link/20240621101353.107425-1-hengqi@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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 reStructuredText 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.