On 19/10/2018 12:58, Zdenek Kabelac wrote:
Hi
Writecache simply doesn't care about caching your reads at all.
Your RAM with it's page caching mechanism keeps read data as long as
there is free RAM for this - the less RAM goes to page cache - less read
operations remains cached.
Hi, does it mean that to have *both* fast write cache *and* read cache
one should use a dm-writeback target + a dm-cache writethrough target
(possibly pointing to different devices)?
Can you quantify/explain why and how faster is dm-writeback for heavy
write workload?
Thanks.
--
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
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