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
Let's work together to prevent the spread of #Lassafever.
Be a guardian of proper sanitation in your community and promote frequent #Handwashing with soap and running water.
Read our latest #LassaFever situation report:
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Let's work together to prevent the spread of #Lassafever.
Be a guardian of proper sanitation in your community and promote frequent #Handwashing with soap and running water.
Read our latest #LassaFever situation report:
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
#Lassafever is preventable.
Be a guardian of proper hand hygiene in your community
Promote frequent #handwashing with soap and running water.
#LassaFeverInfo
#Handwashing with soap under clean, running water is very vital to the prevention of #cholera.
Important #handwashing moments⬇️
✅While caring for the ill
✅After using the toilet
✅Before food preparation
✅Before and after eating
✅After touching high-contact surfaces
#STOPcholera
#Handwashing is a basic and effective tool against infections.
If we do not become sick, we would not need to use #antimicrobials.
Encourage your loved ones to practice frequent #handwashing with soap under running water.
Do your part to prevent #AntimicrobialResistance
#HandHygiene with clean, running water is very vital to the prevention of #cholera.
Important #handwashing moments⬇️
✅While caring for the ill
✅After using the toilet
✅Before food preparation
✅Before and after eating
✅After touching high contact surfaces
#TakeResponsibility
#HandHygiene with soap under clean, running water is very vital to the prevention of #cholera.
Important #handwashing moments⬇️
✅While caring for the ill
✅After using the toilet
✅Before food preparation
✅Before and after eating
✅After touching high contact surfaces
#TakeResponsibility
#HandHygiene with clean, running water is very vital to the prevention of #cholera.
Important #handwashing moments⬇️
✅While caring for the ill
✅After using the toilet
✅Before food preparation
✅Before and after eating
✅After touching high contact surfaces
#TakeResponsibility
#HandWashing remains the most basic and effective means to prevent the spread of infections.
Frequent #handwashing with soap under running water at home, work, health facilities, gatherings, and public spaces is highly important to stay healthy.
Let us all make #cleanhands a regular habit. It protects us all.
#TakeResponsibility
#HandWashing is a basic &effective tool against infections.
If we don't become sick, we would not need to use #antibiotics.
Let us promote the practice of #handwashing in our homes & communities to prevent #AntimicrobialResistance together.
#WorldAntimicrobialAwarenessWeek2022