Swapfile maxed

1. offizieller Beitrag

    Hi - I noticed that OMV's swap file is set to 100M and is constantly maxed out although memory shows usage of only 300M of a total of 4 GB.

    Is there something wrong?

    Should I increase the swap file?

    thanks

    OMV6 i5-based PC

    OMV6 on Raspberry Pi4

    OMV5 on ProLiant N54L (AMD CPU)

    Swap file or swap partition? Which do you have?

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    OMV AMD64 7.x on headless Chenbro NR12000 1U 1x 8m Quad Core E3-1220 3.1GHz 32GB ECC RAM.

    • Offizieller Beitrag

    I noticed the same. Swap file. RPi4. Plenty of RAM available but swap file increase slowly until full. 100MB in tempfs, I think. At the moment I was doing intense sustained disk operations. Read, write, hardlink. Mergerfs. EXT4. I also tried turning off swap. Nothing bad happened. It just seems very strange. Why would swap grow? And it stayed full.

    Its a Swapfile and it was created at installation I believe. Same as Adoby's..it always stays full at 100m despite plenty of memory free.

    OMV6 i5-based PC

    OMV6 on Raspberry Pi4

    OMV5 on ProLiant N54L (AMD CPU)

    I'm seeing the same problem. OMV 5.0, RPI 4.

    Swap space will start out empty after a restart, and slowly fill up until it maxes out. The load on my system is very low (1 user primarily).


    I updated some packages yesterday, which had the effect of emptying swap (it was full previously) since it probably restarted the server. Overnight it now is sitting with 2 MB used out of 100 MB. From what I have seen, it will continue to grow. I can find no clues in the logfiles.

    Solution: i have just created a new swapfile in CLI with 1GB and added to FSTAB.

    It works. swapfile rarely used now since there is plenty of RAM

    OMV6 i5-based PC

    OMV6 on Raspberry Pi4

    OMV5 on ProLiant N54L (AMD CPU)

    But is it really useful to have a larger swapfile on a RPi4?

    Unless you run run out of memory pretty ofter i'd say the swap it's just an avoidable write on the SD card. wouldn't it wear it more?

    • Offizieller Beitrag

    I don't notice any real problem with a full swap file that stays full. It is an indication that something is not right. But I can live with it...


    Possibly add a cron job to turn swap on and off to clear it?

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