속도 최적화 및 디스크 정리
https://easylinuxtipsproject.blogspot.com/p/speed-mint.html
https://easylinuxtipsproject.blogspot.com/p/ssd.html#ID12
여러가지 방법이 링크에 제시되어 있지만 하모니카 리눅스에서 사용해볼만한 방법은 아래의 내용입니다.
sudo apt-get install preload
sudo add-apt-repository ppa:apt-fast/stable
sudo apt-get update
sudo apt-get install apt-fast
7. By default, Firefox writes a lot to the hard disk. This reduces its speed. You can limit the disk write actions of Firefox, by putting the Firefox network cache into the RAM and by disabling sessionstore. Like this:
7.1. By moving the Firefox network cache from your hard disk to the RAM, you diminish the amount of disk writes. This'll probably make your Firefox noticeably faster. The price you pay is small: it'll only "cost" you 200 MB of your RAM. Note: don't do this when your computer has less than 2 GB of RAM! Because with very little RAM, even 200 MB can't be missed. Proceed like this: a. Type in the URL bar of Firefox: about:config Press Enter. b. Now you're being presented with a warning. Ignore it and click on the button "I accept the risk!". c. Copy/paste the following into the filter bar (search bar): browser.cache.disk.enable Toggle its value to false by double-clicking it: this will disable "cache to disk" entirely. d. Now you're going to make sure that "cache to RAM" is enabled. Copy/paste the following into the filter bar (search bar): browser.cache.memory.enable This should already be set to true; if not, toggle it to true by double-clicking it. e. Then you're going to determine how much memory can be used as RAM cache. Copy/paste this into the filter bar (search bar): browser.cache.memory.capacity You'll probably won't find an existing instance. If (as expected) nothing was found, create it like this: Right-click on the blank area in Firefox, then select New - Integer. Make this the preference name: browser.cache.memory.capacity Enter the integer value in KB; I advise 204800 (which equals 200 MB). That's usually more than enough. f. Close Firefox and launch it again. You're done! Check it like this: Type in the URL bar: about:cache Press Enter. By the way: you'll then also see a mention of an "appcache" which is still present on the disk, but there's no need to move that (much less frequently used) cache to the RAM as well. Note: This is a user preference. Repeat this hack in each user account.
7.2. Firefox has a session restore feature, which remembers what pages were opened if Firefox experiences an unexpected shutdown (read: crashes). This feature is neat, but causes many disk writes. Disable it like this: a. Type in the URL bar of Firefox: about:config Press Enter.
b. Now you're being presented with a warning. Ignore it and click on the button "I accept the risk!". c. Type in the filter bar: sessionstore c. Double-click on the item called browser.sessionstore.interval. The default interval is 15000, which means 15 seconds. Add three zeros to the existing value, so that it becomes: 15000000 and click the OK button. d. Close Firefox and launch it again. Now you've practically disabled the session restore feature. Note (1): Leave the other cache and sessionstore settings as they are: usually, the less invasive a hack is, the better. Because this reduces the risk of unexpected unwanted side effects. Note (2): This is a user preference. Repeat this hack in each user account.
8. In your Firefox profile there's an sqlite database called Places, which after a while starts resembling a swollen Swiss cheese with holes. That might slow your Firefox down. You can speed your Firefox up a bit, by optimizing (vacuuming) that database: you can namely deflate that swollen Swiss cheese into a compact smaller cheese. As follows: Type the following in the URL bar of Firefox: about:support Press Enter. Almost at the bottom of the page you get to see then, there's a header called Places Database. Click there on the button called Verify Integrity. You're done! Repeat this on a monthly basis, so that your Firefox won't lose speed again because of a swollen database.
https://easylinuxtipsproject.blogspot.com/p/clean-mint.html