On 03/20/2017 10:15 AM, Matus UHLAR - fantomas wrote:
> Well, I personally will still be curious how much does SMP affect the
> case of one worker and one or more diskers...
I do not understand why you are asking this question in AUFS context.
AUFS does not use diskers! Today, only Rock store uses diskers (in SMP
mode). Some other [ufs-based] cache stores use various helper threads
and processes for I/O as well, but those helper processes are not
diskers or even kids in SMP terminology.
> do diskers only provide I/O to the requestor?
Diskers primary function is low-level disk cache I/O. Like all kids,
diskers respond to cache manager requests and Squid management events
(e.g. shutdown and reconfiguration). IIRC, diskers also build in-RAM
cache_dir index.
http://wiki.squid-cache.org/Features/SmpScale#Terminology
HTH,
Alex.
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