--- title: 'Creating a RAM disk in Linux to speed up Mozilla Firefox' url: 'https://ra1ahq.blog/en/uskorenie-mozilla-firefox-pri-pomoshi-ram-diska' markdown: 'https://ra1ahq.blog/en/uskorenie-mozilla-firefox-pri-pomoshi-ram-diska.md' lang: en date: '2022-06-16' description: 'At home I have a computer without an SSD drive, but with a lot of random access memory (RAM). I came up with a way to speed up the work - you need to use a RAM disk in Linux! Creati' taxonomy: category: - blog tag: - firefox archives_month: - jun_2022 archives_year: - '2022' --- 16 June 2022 ![Creating a RAM disk in Linux to speed up Mozilla Firefox](https://ra1ahq.blog/images/6/6/e/d/3/66ed3c425a8d79f5a1f96ffa362882fcab3baa64-ramdisk.png)17:01 ### Creating a RAM disk in Linux to speed up Mozilla Firefox [firefox](https://ra1ahq.blog/en/tag:firefox) 16 June 2022 17:01 At home I have a computer without an SSD drive, but with a lot of random access memory (RAM). I came up with a way to speed up the work - you need to use a RAM disk in Linux! ### Creating a RAM Disk in Linux Unlike Windows, no third party programs are required. 1\) First of all, let’s create a subdirectory in the TMP folder, which we’ll call ramdisk: ``` sudo mkdir /tmp/ramdisk ``` 2\) Give full rights to all users to read, change, execute: ``` sudo chmod 777 /tmp/ramdisk ``` 3\) Let's check how much free memory is available ``` free -h ``` In my case, I will allocate 1GB of RAM. 4\) Create a RAM disk, size 1024m, file system type tmpfs, device name ramdisk, to the path /tmp/ramdisk: ``` sudo mount -o size=1024m -t tmpfs ramdisk /tmp/ramdisk ``` ### Configuring Mozilla Firefox to use RAM disk We configure Firefox so that it uses our ramdisk to store temporary files (cache) on disk: - launch Firefox 1\) Enter in the address bar **about:config** and press the Enter key We agree that we understand the risk and continue. 2\) Add a string parameter **browser.cache.disk.parent\_directory** and confirm with the Enter key. Click **\[+\]** we add a value to it - our temporary directory in RAM: **/tmp/ramdisk** We complete the assignment of the value with the Enter key. 3\) Restart the browser. We evaluate how the speed of work has increased. If you go to the /tmp/ramdisk folder, you can see that the browser has created temporary files in it - it uses the cache, but not on the disk, but in RAM. ### Creating a permanent RAM disk using the /etc/fstab file In order for the RAM disk to be created when the OS boots, you need to edit the system file /etc/fstab At the end of which I added the lines: # Entry for RAM disk ``` ramdisk /tmp tmpfs defaults 0 0 ``` where: **ramdisk**- parameter No. 1 -**device name** **/tmp**- parameter No. 2,**file system mount point** **tmfs**- parameter No. 3,**file system type - tmpfs** **defaults**- parameter No. 4, value **defaults**, which replaces the list of options: rw, suid, dev, exec, auto, nouser, async and relatime. I did not specify the size size=4g in order to speed up the OS at the same time as Mozilla Firefox - the /tmp/ mount point for temporary files. 0- parameter No. 5, do not use for the backup utility 0- parameter No. 6, do not use for the fsck disk check option If desired, the size of the RAM disk can be limited, instead **defaults** indicate **defaults,size=4g** Result of the mount command: - with a disk size limit of 4GB: ![result 4G](https://ra1ahq.blog/images/e/e/9/b/b/ee9bbf76eaf1abc0dc40f4ca440be66e71699834-result.png "result 4g") - RAM disk without restrictions: ![realtime](https://ra1ahq.blog/images/7/d/2/e/1/7d2e1742dbc9873d0a45b3b36007eb8f91fd918f-realtime.png "realtime") ### Speed comparison **Regular HDD** \*Write speed ``` cd ~ sync; dd if=/dev/zero of=tempfile bs=1M count=1024; sync ``` 1024+0 records received 1024+0 entries sent 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 10.4092 s, 103 MB/s - Reading speed sudo sh -c "sync && echo 3 > /proc/sys/vm/drop\_caches" sync; dd if=~/tempfile of=/dev/null bs=100k; sync 10485+1 records received 10485+1 entries sent 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 7.24557 s, 148 MB/s **RAM disk** \*Writing speed: cd /tmp/ramdisk sync; dd if=/dev/zero of=tempfile bs=1M count=1024; sync 1024+0 records received 1024+0 entries sent 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.32374 s, 811 MB/s 8 times faster writing to RAM. dd if=./tempfile of=/dev/null bs=4k - Reading speed: sudo sh -c "sync && echo 3 > /proc/sys/vm/drop\_caches" dd if=./tempfile of=/dev/null bs=100k 0485+1 records received 10485+1 entries sent 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.347437 s, 3.1 GB/s On my PC, the writing speed to RAM is 811/103=8 times higher, the reading speed from RAM is 3100/103=30 times higher! On server motherboards with multi-channel memory and fast DDR4 RAM modules, the benefits from using a RAM disk should be even more significant. The test used a WDC WD5000AZLX-2 hard drive, RAM 2 DIMM DDR3 1333 MHz (0.8 ns), product: R53 **8G** 1601S2S on the BIOSTAR Group J1800NH3 motherboard. The advantage of storing the Mozilla Firefox cache on a RAM disk is that the browser cache is automatically cleared after the PC is turned off. --- **Links:** *[How to change the default cache folder for firefox?](https://support.mozilla.org/en-US/questions/1066350)- Mozilla Support* [How to Easily Create RAM Disk on Debian, Ubuntu, Linux Mint, CentOS](https://www.linuxbabe.com/command-line/create-ramdisk-linux)- LinuxBabe. *[How to measure hard drive speed](https://serveradmin.ru/kak-izmerit-skorost-zhestkogo-diska/)- serveradmin.ru* [Using tmpfs to speed up the OS a little](https://the-bosha.ru/2010/01/20/tmpfs/)- the-bosha.ru \*[Testing read/write speed for devices...](http://rus-linux.net/MyLDP/consol/test-usb-drives.html)- rus-linux.net ### Related publications [ ![](https://ra1ahq.blog/images/c/d/1/b/a/cd1ba6390f15bdb4cbf899d5dc57e5acdc845984-secur.png) Checklist for checking your web browser before visiting sites that collect information about visitors ](https://ra1ahq.blog/en/cheklist-dlya-proverki-veb-brauzera-pered-posesheniem-saitov-sobirayushikh-informaciyu-o-posetitelyakh) [ ![](https://ra1ahq.blog/images/1/b/0/0/a/1b00a6c9b18d3aecd990a333d8e1e1a0af534b04-ff-nightly.png) Замена веб-браузеров Firefox и Firefox ESR на Firefox-Nightly ](https://ra1ahq.blog/en/zamena-veb-brauzera-firefox-esr-na-firefox-nightly) [ ![](https://ra1ahq.blog/images/b/d/6/1/b/bd61bb0015f4327e7404df5cfbe1f73003cb8ccf-aquarium.webp) Enabling Mozilla Firefox to support the EGL API for hardware graphics acceleration ](https://ra1ahq.blog/en/vklyuchenie-v-mozilla-firefox-podderzhki-api-egl) [ ![No picture](https://ra1ahq.blog/user/themes/mytheme/images/no-image.png) Internet browsers for Linux ](https://ra1ahq.blog/en/internet-browsers-linux) [ ![](https://ra1ahq.blog/images/0/5/c/6/c/05c6c7f6e2b69227f1bcbdb5116d33b8b103e3b2-ff-new.png) Installing or updating Mozilla FireFox web browser from third-party APT repository "apt.fruit.je" ](https://ra1ahq.blog/en/ustanovka-ili-obnovlenie-veb-brauzera-mozilla-firefox-iz-storonnego-apt-repozitoriya-apt-fruit-je) [ Backward](https://ra1ahq.blog/en/montirovanie-iso-obrazov-cd-dvd-diskov-v-linux "Previuous page") [ Forward ](https://ra1ahq.blog/en/belaya-noch-v-pitere-21-22-iyunya-2022 "Next page") ## Languages - 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