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0 pointsvitalyd10y ago0 comments

http://www.scylladb.com/technology/memory/

By the way, I think you're replying to one of the devs of Scylla.

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So, in general, I understand there is lots of stuff going on in Scylla that does distinguish it, at least from Cassandra. There is the user space networking logic for IO. However, a lot of the IO overhead with disk, for example.

vitalydOP10y ago

>However, a lot of the IO overhead with disk, for example.

That's why they benchmarked this workload on a 4x SSD RAID configuration :). Given that i/o bandwidth and throughput continues to increase, processor frequency isn't, and core counts are going up, it's prudent to design a system that can take advantage of this.

cbsmith10y ago

Yeah, and a 4x SSD RAID configuration is kind of overkill in the extreme for most Cassandra set ups.

I'm sure there is a way to set up IO subsystems so that Cassandra becomes a huge bottleneck, but that's a pretty specialized context.

cbsmith10y ago

I'm sure I am.

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cbsmith10y ago

vitalydOP10y ago

>However, a lot of the IO overhead with disk, for example.

cbsmith10y ago

Yeah, and a 4x SSD RAID configuration is kind of overkill in the extreme for most Cassandra set ups.

I'm sure there is a way to set up IO subsystems so that Cassandra becomes a huge bottleneck, but that's a pretty specialized context.

cbsmith10y ago

I'm sure I am.

j / k navigate · click thread line to collapse