What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
A load test can report strong throughput while reusing a single persistent HTTP connection. That result describes the configured test, but it does not by itself show how the same service will behave when clients open or use more concurrent connections. To interpret the result, check the load generator’s reuse and connection-count settings, then compare runs under controlled conditions.
Why one persistent connection can still produce high throughput
HTTP/1.1 allows a client to send successive requests over a persistent connection unless the client or server signals that the connection will close. Reusing a socket avoids establishing a new TCP connection for every request, so a generator can exercise request handling without reproducing the connection setup and churn of a workload that opens many connections. These are different workload patterns, not proof that one result is wrong. RFC 9112 describes HTTP/1.1 message framing and connection management.
As an Amazon Associate I earn from qualifying purchases.
Reuse has conditions: each message needs a self-defined length, and the client must consume the complete response body before reusing the connection. Persistent does not mean permanent. Either endpoint or an intermediary can close a connection, and servers commonly apply idle timeouts.
Requests per second and the number of concurrent TCP connections are separate properties. A throughput figure alone does not reveal how many sockets were open, how often connections were established, or whether requests queued behind a limited connection pool.
#1 Best Overall
- 𝐇𝐢𝐠𝐡-𝐒𝐩𝐞𝐞𝐝 𝐔𝐒𝐁 𝐄𝐭𝐡𝐞𝐫𝐧𝐞𝐭 𝐀𝐝𝐚𝐩𝐭𝐞𝐫 - UE306 is a USB 3.0 Type-A to RJ45 Ethernet adapter that adds a reliable wired network port to your laptop, tablet, or Ultrabook. It delivers fast and stable 10/100/1000 Mbps wired connections to your computer or tablet via a router or network switch, making it ideal for file transfers, HD video streaming, online gaming, and video conferencing.
- 𝐔𝐒𝐁 𝟑.𝟎 𝐟𝐨𝐫 𝐅𝐚𝐬𝐭𝐞𝐫, 𝐌𝐨𝐫𝐞 𝐒𝐭𝐚𝐛𝐥𝐞 𝐃𝐚𝐭𝐚 𝐓𝐫𝐚𝐧𝐬𝐟𝐞𝐫𝐬- Powered via USB 3.0, this adapter provides high-speed Gigabit Ethernet without the need for external power(10/100/1000Mbps). Backward compatible with USB 2.0/1.1, it ensures reliable performance across a wide range of devices.
- 𝐒𝐮𝐩𝐩𝐨𝐫𝐭𝐬 𝐍𝐢𝐧𝐭𝐞𝐧𝐝𝐨 𝐒𝐰𝐢𝐭𝐜𝐡- Easily connect your Nintendo Switch to a wired network for faster downloads and a more stable online gaming experience compared to Wi-Fi.
- 𝐏𝐥𝐮𝐠 𝐚𝐧𝐝 𝐏𝐥𝐚𝐲- No driver required for Nintendo Switch, Windows 11/10/8.1/8, and Linux. Simply connect and enjoy instant wired internet access without complicated setup.
- 𝐁𝐫𝐨𝐚𝐝 𝐃𝐞𝐯𝐢𝐜𝐞 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲- Supports Nintendo Switch, PCs, laptops, Ultrabooks, tablets, and other USB-powered web devices; works with network equipment including modems, routers, and switches.
What one socket does—and does not—tell you
If the test actually reused one socket, it measured a persistent-connection pattern for that run. It can still provide useful information about the configured request workload. It does not establish performance for a workload with more concurrent connections, frequent reconnects, or different client-side connection limits.
More connections are not automatically better or more representative. RFC 9112 notes that multiple connections can reduce head-of-line blocking, while also consuming server resources and contributing to network congestion. It advises clients to limit simultaneous open connections to a given server. Choose a connection pattern to match the workload you intend to model rather than maximizing the count by default.
Rank #2
- The Anker Advantage: Join the 65 million+ powered by our leading technology.
- Instant Internet: Connect to the internet instantly from virtually any USB-C 3.0 device, and enjoy stable connection speeds of up to 1 Gbps.
- Lightweight and Compact: The space-saving and portable design measures just over half an inch thick and weighs about the same as a AA battery.
- Premium Build: Features a sleek aluminum exterior and braided-nylon cable to complement the design of high-end devices.
- What You Get: PowerExpand USB-C to Gigabit Ethernet Adapter, welcome guide, 18-month worry-free warranty, and friendly customer service.
Check the generator settings that control reuse and connection count
In k6, distinguish the two reuse options
k6 documents noConnectionReuse as a boolean that disables keep-alive connections; its documented default is false. To explicitly disable connection reuse, an options block can include:
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 matchexport const options = { noConnectionReuse: true };k6 also documents noVUConnectionReuse, which controls whether a virtual user (VU) reuses TCP connections between iterations. Its documented default is also false. These settings address different aspects of the workflow, so inspect the relevant option rather than treating them as interchangeable. Consult the k6 options reference for the documentation that matches your installed version.
Rank #3
- USB-C Meets 1000Mbps Ethernet in Seconds：UGREEN usb c to ethernet adapter supports fast speeds up to 1000Mbps and is backward compatible with 100/10Mbps network. Perfect for work, gaming, streaming, or downloading with a stable, reliable wired connection
- Extend a Ethernet Port for Your Device：This ethernet to usb c adds a Gigabit RJ45 port to your device. It’s the perfect solution for new laptops without built-in Ethernet, devices with damaged LAN ports, or when WiFi is unavailable or unstable
- Plug and Play: This Ethernet adapter is driver-free for Windows 11/10/8.1/8, macOS, Chrome OS, and Android. Drivers are required for Windows XP/7/Vista and Linux, and can be easily installed using our instructions. LED indicator shows status at a glance
- Small Adapter, Big Attention to Detail: The usb c to ethernet features a durable aluminum alloy case for faster heat dissipation than plastic. Its reinforced cable tail and wear-resistant port ensure long-lasting durability. Compact size and easy to carry
- Widely Compatible: The usbc to ethernet adapter is compatible with most laptops, tablets, smartphones, Nintendo Switch, and Steam Deck with USB-C or Thunderbolt 4/3 port, like MacBook Pro/Air, XPS, iPhone 17/16/15 Pro/Pro Max, Mac Mini, Chromebook, iPad
In wrk, inspect the total connection setting
wrk’s -c or --connections option sets the total number of HTTP connections to keep open; its threads handle shares of that total. The README’s example uses 12 threads and 400 connections. That is an example configuration, not a universal recommendation. Check both the connection count and thread count in the actual command. See the wrk README.
For other clients, verify the exact runtime and version
Connection pooling may be controlled by a runtime or HTTP client rather than a load-test option. Do not assume a setting’s name, default, or effect from another tool. Confirm the behavior in documentation for the exact client and version used, and record that version with the test results.
Rank #4
- Connects a USB 3.0 device (computer/laptop) to a router, modem, or network switch to deliver Gigabit Ethernet to your network connection. Does not support Smart TV or gaming consoles (e.g.Nintendo Switch).
- Supported features include Wake-on-LAN function, Green Ethernet & IEEE 802.3az-2010 (Energy Efficient Ethernet)
- Supports IPv4/IPv6 pack Checksum Offload Engine (COE) to reduce Cental Processing Unit (CPU) loading
- Compatible with Windows 8.1 or higher, Mac OS
Run a controlled comparison
A comparison is informative only if connection reuse is the intended variable. Keep the target, request mix, payloads, duration, concurrency model, and generator resources comparable; state which settings changed. If you change connection count, reuse policy, and virtual-user count together, you cannot attribute a difference to any one of them.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →- Record the setup. Note the load tool and version, HTTP protocol version, script or scenario, VUs or workers, configured connection count, and whether connections are reused between requests or iterations.
- Inspect the effective settings. For k6, check whether reuse-disabling options are set. For wrk, record
-cand the thread count. Do not infer socket count from requests per second. - Choose the connection patterns to compare. Configure each run explicitly for the intended reuse behavior. Keep other workload inputs comparable and report the settings that differ.
- Measure more than throughput. Compare latency distributions, errors, connection establishment and reconnect behavior, and signs of generator or target saturation.
- Check limits and closures. Account for server-side idle timeouts and connection closure. With wrk, also check ephemeral-port availability and whether the server listen backlog can handle the initial connection burst; these are possible constraints, not diagnoses of a particular test result.
Report each result narrowly: one run measured its configured persistent-connection pattern, and the comparison measured another pattern. Neither run alone establishes every aspect of production performance. Calling one pattern “more realistic” requires evidence that it matches the clients and connection behavior in the production workload.
Best Value
- Dual USB-A/C Port Design: This USB hub with ethernet adapter features dual connectors for both USB C and USB A devices, ensuring wide compatibility across laptops, tablets, and smartphones. It includes 1x Gigabit Ethernet port and 3x USB A 3.0 ports, all usable at the same time for smooth and efficient connectivity. 📌Note: When using USB-A to connect devices, please ensure the USB-C is securely attached to the USB-A connector.
- Stable Gigabit Ethernet Adapter: Get fast, wired Internet up to 1000Mbps with this USB C to ethernet adapter. Backward compatible with 10/100Mbps networks for flexible connectivity across various setups. Ideal for streaming, gaming, and large file transfers. 📌Note: Ensure the RJ45 connector is plugged in securely in the port and use CAT6 & above Ethernet cable is required to reach 1 Gbps.
- 5Gbps Data Transfer: Transfer large files, photos, and videos in seconds with this USB 3.0 hub supporting speeds up to 5Gbps—10× faster than USB 2.0. Backward compatible with USB 2.0 and 1.1 devices, this USB splitter expands one port into three for connecting keyboards, mice, and flash drives for everyday use. 📌Note: The three USB-A 3.0 ports share a total 5Gbps bandwidth.【NO HDMI port, NO USB-C data port, and NO PD charging】
- Plug and Play: Reliable USB to ethernet adapter ready to use in seconds. Instantly connects with USB-A and USB-C devices including MacBook Pro/Air, iPad Pro, iMac, Surface Laptops, Chromebook, XPS, tablets, Steam, and smartphones. Works with Windows, macOS, Linux, Chrome OS, and Android. 📌XP/Win7 may need driver. Older systems may not recognize this product due to its USB 3.0 chip. Please refer to the “Installation Manual” to manually download and install the driver.
- Durable & Portable Build: Made with sturdy aluminum alloy, this RJ45 to USB-C adapter delivers long-term durability, efficient heat dissipation, and stable performance for offices, corporate deployments, classrooms, and campus workstations—while its slim, portable form factor makes it ideal for business travel, educators, and mobile professionals.
How to report the result accurately
Include the connection policy and count alongside the concurrency model, throughput, latency distribution, errors, connection setup or reconnect behavior, and relevant generator and target limits. This gives readers enough context to understand what the test exercised and what it did not. Do not turn a throughput result into a claim about concurrent connection capacity unless the test measured that dimension.
Quick Recap
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.
