Skip to content
Snippets Groups Projects
user avatar
Vladislav Shpilevoy authored
listen() on Mac used to take SOMAXCONN as the backlog size. It is
just 128, which is too small when connections are incoming too
fast. They get rejected.

Increase of the queue size wasn't possible, because the limit was
hardcoded. But now sio takes the runtime limit from
kern.ipc.somaxconn sysctl setting.

One weird thing is that when set too high, it seems to have no
effect, like if nothing was changed. Specifically, values above
32767 are not doing anything, even though stay visible in
kern.ipc.somaxconn.

It seems listen() on Mac internally might be using 'short' or
int16_t to store the queue size and it gets broken when anything
above INT16_MAX is used. The code truncates the queue size to this
value if the given one is too high.

Closes #8130

NO_DOC=bugfix
NO_TEST=requires root privileges for testing
7e9a872f
History
user avatar 7e9a872f

Tarantool

Actions Status Code Coverage OSS Fuzz Telegram GitHub Discussions Stack Overflow

Tarantool is an in-memory computing platform consisting of a database and an application server.

It is distributed under BSD 2-Clause terms.

Key features of the application server:

Key features of the database:

  • MessagePack data format and MessagePack based client-server protocol.
  • Two data engines: 100% in-memory with complete WAL-based persistence and an own implementation of LSM-tree, to use with large data sets.
  • Multiple index types: HASH, TREE, RTREE, BITSET.
  • Document oriented JSON path indexes.
  • Asynchronous master-master replication.
  • Synchronous quorum-based replication.
  • RAFT-based automatic leader election for the single-leader configuration.
  • Authentication and access control.
  • ANSI SQL, including views, joins, referential and check constraints.
  • Connectors for many programming languages.
  • The database is a C extension of the application server and can be turned off.

Supported platforms are Linux (x86_64, aarch64), Mac OS X (x86_64, M1), FreeBSD (x86_64).

Tarantool is ideal for data-enriched components of scalable Web architecture: queue servers, caches, stateful Web applications.

To download and install Tarantool as a binary package for your OS or using Docker, please see the download instructions.

To build Tarantool from source, see detailed instructions in the Tarantool documentation.

To find modules, connectors and tools for Tarantool, check out our Awesome Tarantool list.

Please report bugs to our issue tracker. We also warmly welcome your feedback on the discussions page and questions on Stack Overflow.

We accept contributions via pull requests. Check out our contributing guide.

Thank you for your interest in Tarantool!