On Fri, Jan 10, 2025, at 3:28 AM, Vitaly Zaitsev via devel wrote:
> On 09/01/2025 23:42, Chris Murphy wrote:
>> Do I still need to enable zswap with the kernel param? Or can it all be done 
>> by the service unit?
>
> No. It will be enabled automatically since the zswap-cli.conf 
> configuration file already has the enabled=Y option by default, and 
> zswap can be enabled or disabled on the fly.
>
> There is a manual page with documentation: man zswap-cli.

I've been using this for a couple of days and it's working fine.  The default 
configuration file uses 

max_pool_percent=15
compressor=zstd
zpool=zsmalloc
accept_threshold_percent=90
shrinker_enabled=Y

Reported compression ratio is 4.22. Documentation says zbud compression ratio 
is fixed at 2:1. So zstd/zsmalloc is an obvious improvement. We're already 
using zstd elsewhere in Fedora.

Should we update https://fedoraproject.org/wiki/Zswap to reflect using this 
package? I like the systemd service unit approach, which then pokes sysfs 
appropriately.



-- 
Chris Murphy
-- 
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