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Изворен канал @pythonotes · Post #335 · 29 мар.

В Linux стандартными средствами можно использовать часть оперативной памяти как диск. Для этого требуется указать тип монтирования tmpfs в команде mount mount -t tmpfs -o size=5G tmpfs /mnt/ram Теперь путь /mnt/ram можно использовать как обычный каталог. Для чего это может быть нужно? ▫️ Скорость работы с таким каталогом выше чем многие SSD и тем более HDD. ▫️ Если у вас очень быстрый SSD на NVMe M.2 то такой способ особо не прибавит вам скорости, но поможет сохранить ресурс SSD когда требуется обрабатывать очень много мелких файлов и оперативка позволяет выделить нужный объем. ▫️ Оперативка это энергозависимая память, поэтому выключении питания все файлы безвозвратно теряются. Такой "non persistent" каталог гарантирует удаление временных файлов. Я написал небольшой скрипт для условного теста и сравнения скорости копирования файлов между SSD и RAM. Вот мои результаты: Single File Size: 30.0Gb ssd > ssd: 0:00:12.850 / 2.3Gb/s sdd > ram: 0:00:06.453 / 4.6Gb/s ram > ram: 0:00:06.995 / 4.3Gb/s ram > sdd: 0:00:06.217 / 4.8Gb/s Dir size: 32.7Gb, File count: 11127 ssd > ssd: 0:00:15.063 / 2.2Gb/s sdd > ram: 0:00:08.486 / 3.9Gb/s ram > ram: 0:00:08.032 / 4.1Gb/s ram > sdd: 0:00:07.026 / 4.7Gb/s Скрипт для теста ↗️ На моём железе прирост скорости ~2x. Плюс экономия ресурса SSD. В Windows такой фишки по умолчанию нет, но обязательно найдутся аналогичные решения #linux#triks

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Libreware

@libreware · Post #1472 · 20.06.2025 г., 21:30

Unboxing Elecrow ThinkNode M1 & M2 | #Meshtastic Setup, Field Test, Review & Off-Grid Comms Breakdown https://rumble.com/v6v1uk1 In this video, I take you deep into the world of off-grid communication as I unbox and test two brand-new devices from Elecrow: the ThinkNode M1 and ThinkNode M2. These tools come pre-installed with Meshtastic firmware and are built for encrypted, decentralized communication — no SIM card, no Wi-Fi, and no cell towers required. Whether you’re prepping for a blackout, building a resilient mesh network, or just exploring survival tech, this video is packed with everything you need to know. We start with a full unboxing of both devices, breaking down what makes each unique. The ThinkNode M1 is powered by the nRF52840 chip and includes a GPS module for location tracking, a 1.54” sunlight-readable EPD screen, and a 1200mAh battery built to last over 48 hours. It’s rugged, outdoor-ready, and ideal for emergency kits or remote travel. In contrast, the ThinkNode M2 is lighter, smaller, and powered by the ESP32-S3 chip. It includes a 1.3” OLED display, Bluetooth support, a 1000mAh battery, and is better suited for modular integration or stealthy builds. After the unboxing, I walk you through a step-by-step setup of each device using the Meshtastic mobile app. I show you how to configure them, pair with Bluetooth, and get your private mesh network up and running in minutes. From there, I run live tests to see how each device performs in real-world conditions and compare their features, form factor, and best use cases. If you’re interested in off-grid privacy tools, these are two of the most beginner-friendly and capable devices out there right now. I also include a breakdown of which device might be better depending on your needs—whether you’re building a neighborhood mesh or planning for emergency scenarios. Make sure to check out the official product pages using the links below. These links track monthly performance, so I appreciate your support if you use them: 👉 ThinkNode M1: https://www.elecrow.com/thinknode-m1-meshtastic-lora-signal-transceiver-powered-by-nrf52840-with-154-screen-support-gps.html?idd=5 👉 ThinkNode M2: https://www.elecrow.com/thinknode-m2-meshtastic-lora-signal-transceiver-powered-by-esp32-s3-with-1-3-oled-display.html?idd=5 Elecrow is also running a giveaway where you can win LoRa modules or get PCB assembly sponsorship. Don’t miss this opportunity to level up your off-grid gear for free: https://www.elecrow.com/blog/lora-modules-giveaway-and-pcb-assembly-sponsorship.html?idd=5 These tools are more than tech — they represent freedom. In a world where networks can go dark and censorship can silence, devices like these keep people connected, informed, and in control. With Meshtastic and LoRa, you are the signal. You are the network. And it’s all open source. If you found this helpful, drop a comment, like the video, and subscribe for more content on off-grid tech, cybersecurity gadgets, and digital autonomy. Let me know which one you’d trust in your blackout bag — the rugged M1 or the sleek, portable M2. ⸻ 📡 Hashtags: #LoRa#Meshtastic#ThinkNodeM1#ThinkNodeM2#Elecrow#OffGridCommunication#EmergencyComms#GridDown#PreppingGear#TechUnboxing#ESP32#nRF52840#SurvivalTech#MeshNetworking#DecentralizedComms#EncryptedMessaging#HamRadioAlternative#LongRangeRadio#DigitalFreedom#TacticalTech#CyberSecurity#LoRaWAN#MeshRadio#HackerTools#BlackoutReady#BugOutBag#PrivacyTech#RadioComms#DisasterPreparedness#MeshtasticSetup#FreedomThroughTech