[HN Gopher] Zram Performance Analysis
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       Zram Performance Analysis
        
       Author : enz
       Score  : 33 points
       Date   : 2025-10-23 19:58 UTC (3 hours ago)
        
 (HTM) web link (notes.xeome.dev)
 (TXT) w3m dump (notes.xeome.dev)
        
       | kragen wrote:
       | An alternative is zswap
       | https://old.reddit.com/r/linux/comments/11dkhz7/zswap_vs_zra...
       | which I believe, despite the name, can also compress RAM without
       | hitting disk.
        
         | mscdex wrote:
         | It's only an alternative if you have a backing swap device.
         | zram does not have this requirement, so (aside from using no
         | compression) it's basically the only solution for some
         | scenarios (e.g. using entire disk(s) for ZFS).
        
       | sirfz wrote:
       | a comment here about zram caught my eye a day or two ago and I've
       | been meaning to look into it. Glad to see this post (and I'm sure
       | many others saw the same comment and shared my obsession)
        
       | burch45 wrote:
       | This post's conclusions are odd. It has a bunch of extensive
       | benchmarks showing that zstd is by far the worst performing
       | across every metric except a slight increase in compression ratio
       | and then says the conclusion is zstd is the best choice. Unless
       | I'm missing something in the data.
        
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       (page generated 2025-10-23 23:00 UTC)