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
Operation Paperclip was a secret U.S. program after World War II. It brought over 1,500 German and Austrian scientists to the United States. Many had been members of the Nazi Party. They worked on military, aeronautics, and space research. Their Nazi pasts were ignored so the U.S. could use their expertise and keep it from the Soviet Union.
🇺🇸🧑🔬🚀
[Read more]
@googlefactss
#OperationPaperclip#HistoryFacts#ColdWar#Science#NASA
GERMANY IS A NAIVE PAWN OF THE USA WITH SEEMINGLY NO POWER TO SAVE ITSELF.
The #USA has failed against #Russia:
• It has missed its military target and this failure is damaging America’s prestige as the greatest military power.
• The #sanctions war against Russia are a complete failure. The West is weakened while Russia strengthens. The #IMF figures speak volumes: Germany doesn’t even make the list.
“The primary interest of the United States through the last century-that is, #WW1, #WW2, and the #ColdWar, has been the relationship between Germany and Russia.
If united, those two would be the only power that could threaten us-and so we have to make sure that doesn’t happen.”
George Friedman
The aim is therefore to prevent Germany from teaming up with Russia.
If it is not possible to weaken Russia as a major opponent, there is the option of preventing the alliance by turning #Germany and Russia into enemies and/or destroying Germany (for the third time after 1918 and 1945)
Operation Osoaviakhim was a secret Soviet program after World War II. Over 2,500 German scientists, engineers, and technicians and their families were taken from the Soviet zone of Germany to the USSR.
They worked on Soviet military, weapons, and rocket technology. The goal was to use German expertise to strengthen the USSR and keep it from falling into Western hands.
Basically the Soviet version of operation Paperclip📎
🇷🇺🔬🚀
[Read more]
@googlefactss
#OperationOsoaviakhim#ColdWar#HistoryFacts#WWII#SovietUnion#Science#operationpaperclip
Project MK‑ULTRA was a secret CIA program during the Cold War. It ran from 1953 to 1964. The CIA tested mind control using LSD, hypnosis, electroshock, and sensory deprivation. Some experiments gave drugs to people without their knowledge, isolated subjects for long periods, or exposed them to extreme stress. Under Dulles, the CIA opened secret prisons in West Germany and Japan, advised by Walter Schreiber, former Surgeon General of the Nazi army. Schreiber had avoided imprisonment after World War II and was brought to the West by U.S. intelligence, likely as part of programs like Operation Paperclip. Most records of MK‑ULTRA were destroyed in 1973, but investigations later revealed the program.
🧠🔬🇺🇸
[Read more]
@googlefactss
#MKULTRA#CIA#HistoryFacts#Science#ColdWar#MindControl#notAtheory