pazzoide Posted November 28, 2018 Share Posted November 28, 2018 Hi on my Banana PI I have set no swapfile/partition since I never gonna use swapspace ram is gonna be enough. When I reboot I always find 499MB of swap swapon -s Filename Type Size Used Priority /dev/zram1 partition 255728 67052 5 /dev/zram2 partition 255728 66836 5 But I can find no entry of /dev/zram1 nor /dev/zram2 in /etc/fstab. Can anybody explain me how is this possibile? And how to manage those partitions? I found another /dev/zram0 which I think has to deal with log2ram since it is mounted on /var/log, is this correct? Thanks Link to comment Share on other sites More sharing options...
Tido Posted November 28, 2018 Share Posted November 28, 2018 I guess you find your answer somewhere in here: https://forum.armbian.com/topic/5565-zram-vs-swap/ Link to comment Share on other sites More sharing options...
pazzoide Posted December 2, 2018 Author Share Posted December 2, 2018 I can't figure it out... is zram written to disk like swap or is it written to ram memory? Link to comment Share on other sites More sharing options...
Tido Posted December 2, 2018 Share Posted December 2, 2018 RAM and compressed 1 Link to comment Share on other sites More sharing options...
pazzoide Posted December 20, 2018 Author Share Posted December 20, 2018 Thank you, what I don't understand is where does this 500MB of zram space come from? It is not a chip on the board as of producer's specs http://www.lemaker.org/product-bananapi-specification.html It should not be part of the 1GB ram, since if I swapoff I can see the "Swp bar" (zram) dropping to 0 and filling the "Mem bar" with the missing MegaBytes. So where does it come from??? Link to comment Share on other sites More sharing options...
sfx2000 Posted December 20, 2018 Share Posted December 20, 2018 4 hours ago, pazzoide said: So where does it come from??? armbian-zram-config.service, which is closely linked to armbian-ramlog.service Doesn't hurt to keep them enabled, but if one wants, you can disable them using systemctl disable <name of service> There's benefit to keeping them on - reduces writes to the flash device. Link to comment Share on other sites More sharing options...
Tido Posted December 20, 2018 Share Posted December 20, 2018 8 hours ago, pazzoide said: what I don't understand is two (2) posts above yours there is a link. Did you read that thread ? Link to comment Share on other sites More sharing options...
yanjun11 Posted April 2, 2020 Share Posted April 2, 2020 On 12/21/2018 at 3:48 AM, sfx2000 said: armbian-zram-config.service, which is closely linked to armbian-ramlog.service Doesn't hurt to keep them enabled, but if one wants, you can disable them using systemctl disable <name of service> There's benefit to keeping them on - reduces writes to the flash device. Thank you so much! It's worked. at the end of 【/usr/lib/armbian/armbian-zram-config】 add # like this: case $1 in 123 *start*) 124 # activate_zram_swap 125 activate_ramlog_partition 126 activate_compressed_tmp 127 ;; 128 esac it close zram_swap. Link to comment Share on other sites More sharing options...
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