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Through some experiments, we found out that increasing the default RX buffers count from 512 to 1024, gives slightly better throughput and significantly reduces the no_wqe_rx errs on the receiver side. Along with these, other parameters like cpu usage, retrans seg etc also show some improvement with 1024 value. Following are some snippets from the experiments ntttcp tests with 512 Rx buffers --------------------------------------- connections| throughput| no_wqe errs| --------------------------------------- 1 | 40.93Gbps | 123,211 | 16 | 180.15Gbps | 190,120 | 128 | 180.20Gbps | 173,508 | 256 | 180.27Gbps | 189,884 | ntttcp tests with 1024 Rx buffers --------------------------------------- connections| throughput| no_wqe errs| --------------------------------------- 1 | 44.22Gbps | 19,864 | 16 | 180.19Gbps | 4,430 | 128 | 180.21Gbps | 2,560 | 256 | 180.29Gbps | 1,529 | So, increasing the default RX buffers per queue count to 1024 Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Link: https://patch.msgid.link/1727667875-29908-1-git-send-email-shradhagupta@linux.microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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
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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.