RTIPC is a Linux inter-process communication library built around fixed-size, single-producer/single-consumer queues in shared memory. Its design aims to transfer the newest data with little work in the data path: when a queue fills, the producer can overwrite the oldest queued message rather than block or preserve every update. That makes RTIPC a candidate for fresh state and measurements, not a lossless message backlog. The project describes the approach as zero-copy and low-overhead, but its project and package pages do not publish benchmark results that quantify those claims.
What RTIPC is
RTIPC is a library for real-time inter-process communication (IPC). Its documented core is a wait-free, zero-copy, single-producer/single-consumer (SPSC) circular queue. One or more channels reside in shared memory, allowing processes to exchange fixed-size messages through that region rather than sending each message through a conventional socket data path. The project repository describes the library and its design.
As an Amazon Associate I earn from qualifying purchases.
“Zero-copy” refers to the intended message-transfer path, not to every part of using the library: processes still need to establish the shared-memory channels and coordinate their configuration. Likewise, “wait-free” describes the queue design; it does not mean every surrounding operation, application, or system call is guaranteed to complete within a fixed time.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchHow shared-memory channel setup works
- Create the shared-memory region and channel configuration. The channel’s message size and queue capacity are fixed when it is created.
- Pass setup information over a Unix socket. The client provides the shared-memory region and configuration information to the server through the socket.
- Build matching channels at the server. The server uses the received information to construct a corresponding vector of channels.
- Exchange messages through shared memory. Once configured, the channel queue is the data path between its single producer and single consumer.
RTIPC also documents optional eventfd support for connecting notifications to select, poll, or epoll event loops. That is an integration option for notification; it does not change the queue’s SPSC model or make its contents a lossless history.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
What happens when a queue is full
The documented policy favors freshness: if the queue fills, the producer can replace the oldest queued message with the newest one. The producer therefore need not wait for the consumer to make room, but an unread update can be discarded. An application reading the queue gets a recent value rather than a guarantee that it will process every value in order.
This behavior can fit state snapshots, current measurements, or other streams where a stale update is less useful than the latest state. It is a poor match when every event must be retained, audited, or processed exactly once. In that case, use a delivery design with appropriate retention and backpressure guarantees rather than assuming RTIPC’s overwrite behavior is lossless.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Check the model against your application
- Producer and consumer count: the documented queue is SPSC. Applications with multiple concurrent producers or consumers need a different coordination design or additional channels.
- Message size: messages are fixed-size for a channel. Variable-sized records do not fit that model directly.
- Queue capacity: capacity is fixed at creation. Choose it with expected bursts and consumer delays in mind, while recognizing that a full queue overwrites its oldest message.
- Delivery semantics: decide whether dropping stale updates is acceptable. If not, queue fullness behavior is a fundamental mismatch, not just a tuning issue.
- Notification needs: determine whether optional eventfd notifications fit the application’s event loop or whether another wake-up mechanism is needed.
- Performance evidence: verify latency and throughput on the actual target system if those determine suitability; design descriptions alone do not establish application-level performance.
Does “near-zero-overhead” mean measured performance?
No numerical performance result is established by the project and package pages reviewed here. They describe zero-copy, syscall-free transfer in the data path and deterministic behavior as design properties, but provide no latency, throughput, CPU-utilization, or comparative benchmark figures. They also do not specify benchmark hardware, kernel, or workload settings from which a reader could assess those claims.
Consequently, “near-zero-overhead” should be read as a design goal or characterization, not as a quantified guarantee or independently verified result. For a deployment decision, benchmark the workload on the intended hardware and kernel, including queue-full behavior and consumer scheduling; do not substitute unrelated IPC or network benchmark numbers for RTIPC measurements.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
RTIPC is not Linux TIPC
The similar names refer to different technologies. RTIPC is the library described above, centered on shared-memory channels for local IPC. Linux kernel TIPC means Transparent Inter Process Communication; the Linux 6.7 kernel documentation describes it as an intra-cluster communication protocol that can use UDP or Ethernet transports. TIPC is not another name for RTIPC, and its cluster/network role should not be confused with RTIPC’s documented shared-memory queue model.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Version context
Docs.rs lists the Rust package rtipc as version 0.9.0, dated 2026-09-28, and describes it as a pure Rust implementation. That is a dated snapshot of that package, not evidence that every RTIPC implementation or deployment uses the same version.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
