06e5b661ed
When CONFIG_NET_TCP_WRITE_BUFFERS is enabled, iobs are used for both queuing data from application, and for assembling packets for sending. If there is a system-wide shortage of iobs, it could happen that there is not enough free space to form any packets to send. The buffers allocated for TCP data also can't be released until the packet is sent. Normally this should be avoided by setting suitable values for CONFIG_IOB_NBUFFERS and CONFIG_IOB_THROTTLE. The default values are ok for light usage, but can run out when using multiple simultaneous TCP streams. Before this commit, iob shortage would cause TCP connections to get stuck and eventually timeout. With this change, TCP stack sends smaller packets, eventually freeing some buffers from the write queue. |
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| crypto | ||
| drivers | ||
| dummy | ||
| fs | ||
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| include | ||
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| net | ||
| openamp | ||
| pass1 | ||
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| tools | ||
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| wireless | ||
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| AUTHORS | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
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| README.md | ||
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README.md
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
Getting Started
First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.
Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.