Originally posted by kebabbert
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Linux Zcache Now Handles Crypto Compression
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Originally posted by curaga View PostThis is unrelated to IBM. Also I think some are confusing zcache with zram, IIRC only zram is available in the CM rom. Zram on its own is very useful on low-ram systems though, I should know.
Zcache, I thought, was a user of transcendental memory with the addition of compression.
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Badly chosen name just like DRM
zram in the kernel == lzo-compressed ram disk, usually used for swap. zcache as I understand it enables the compression of caches like the various filesystem caches. That it's on top of transcendental memory is just coincidence, the first versions weren't (IIRC).
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I'm pleased with the results. I've been using this machine to run a Minecraft server while playing on it at the same time. Since using Bukkit (server mod), the RAM usage has been a bit heavier and it's started hitting swap, resulting in nasty slow downs. I tried it just now with zcache enabled and it didn't hit swap once.
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Originally posted by curaga View PostBadly chosen name just like DRM
zram in the kernel == lzo-compressed ram disk, usually used for swap. zcache as I understand it enables the compression of caches like the various filesystem caches. That it's on top of transcendental memory is just coincidence, the first versions weren't (IIRC).
I was thinking of this (http://lwn.net/Articles/397574/) and zram was mentioned in the comments (http://lwn.net/Articles/397894/).
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