On Sat, 5 Dec 2020, 3:17 am Samuel Sieb, < > > zram doesn't take up any significant amount of RAM until it's needed. > Then it compresses the swapped data blocks. I see that I've > misconfigured something and ended up with two zram swaps active, so I > have almost 17GB of zram defined on my 12GB laptop. Currently there is > 9GB of swapped data using just over 2GB of RAM. So even if I used the > entire 17GB of zram swap, my system would probably still be ok. > > # zramctl > NAME ALGORITHM DISKSIZE DATA COMPR TOTAL STREAMS MOUNTPOINT > /dev/zram1 lz4 5G 5G 1.3G 1.4G 4 > /dev/zram0 lzo-rle 11.6G 3.8G 931.8M 968.5M 4 [SWAP] >
The whole zram thing does not make sense to me. You allocate swap so that you can swap pages to the disk if you run out of physical memory. Thus it makes sense that the backing store will be on the disk. How does it make sense to keep that store in the RAM? On the very resource that is scarce. Its like you want more room, so you half your room and once a half is used you move onto the next room. This makes no sense. If you want more room you need get some actual space. >
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