![]() ![]() Observing the Issue: Heavy SSD Writes from Firefox This issue is being discussed in a STH forum thread where you can follow the discussion. This can have an unintended effect for those SSDs as session store data can write data constantly to NAND. Today’s modern multi-core processor systems and higher quantities of RAM allow users to open multiple Firefox tabs and windows simultaneously. In any case, I recommend to adjust the parameter to some value higher than 15 seconds.If you are a user of Firefox we have a must-change setting. They can survive for years under heavy load so frequent writes should not be a problem at all. With MLC and TLC NAND flash memory, 3D NAND and now 3D XPoint memory, modern SSD drives have a very long long span and can withstand several terabytes of data written per day. It is worth mentioning that SSD technology has greatly improved in recent years and is still rapidly evolving. This tweak can be useful for hard disk drive users too because it reduces the disk load. This is especially true for users who usually have several browser windows open with a huge number of tabs.Ĭhanging the mentioned parameter in about:config can help you to lengthen your SSD's life. ![]() Now, Firefox will save the session once every 30 mins and not every 15 seconds!Īccording to the author, if you have a lower capacity consumer level SSD in any of your machines, your drive can be rated for about 20 GB of writes per day and Firefox alone might be using more than half of that. Set the to 1800000, this means 30 minutes.Enter the following text in the filter box:.Open a new tab in Firefox and enter the following text in the address bar: about:configĬonfirm that you will be careful if a warning message appears for you.To reduce the frequency with which Firefox writes data to the drive, this is what the author did and what you can do too. After increasing the timeout, the issue was fixed. It is enabled by default and saves the current browsing session's state every 15 seconds. Without browsing heavy websites or watching video streams, Firefox managed to write at least 10 GB of data per day to the drive.Īfter a long investigation, the author found out that the cause of the issue is the session auto saving feature of Firefox. ![]() Once he spotted this, he started tracking processes using SysInternals Process Explorer. In the case of the author, the freeware version of SSDLife notified him that as much as 12 GB was written to the SSD in one day. In a recent research from Sergey Bobik of, it was observed that Firefox is, for some reason, writing a huge amount of data in a relatively short period of time to the disk drive. If you are using an SSD drive, then the profile is stored on it as well in your %appdata%\Firefox folder. By default, Firefox's profile is located on the same drive where Windows is installed. ![]()
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