pazzoide Posted November 28, 2018 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
Tido Posted November 28, 2018 Posted November 28, 2018 I guess you find your answer somewhere in here: https://forum.armbian.com/topic/5565-zram-vs-swap/
pazzoide Posted December 2, 2018 Author Posted December 2, 2018 I can't figure it out... is zram written to disk like swap or is it written to ram memory?
pazzoide Posted December 20, 2018 Author 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???
sfx2000 Posted December 20, 2018 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.
Tido Posted December 20, 2018 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 ?
yanjun11 Posted April 2, 2020 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.
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