120K distributed consistent writes per second with Calvin

Re:120K distributed consistent writes per second with Calvin by qaq on Saturday February 25, 2017 @12:21AM (#13730219)

330K iops for a single device you are very unlikely to be running a single device. There are Fusion IO models that can do 1M IOPS but they are on the exotic side. If you are optimising for throughput you can configure commit_delay so you will fsync multiple commits.

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Re:120K distributed consistent writes per second with Calvin by evanweaver on Saturday February 25, 2017 @02:22AM (#13730497)

FaunaDB is faster in an unclustered, unreplicated configuration too, but that's not what FaunaDB is really for.

We should track disk IOPS, though, so you can do an apples-to-apples comparison of how much low-level throughput the database is driving. I believe the instance store disks in the EC2 C3 hardware class can support about ~20K write IOPS each.

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Re:120K distributed consistent writes per second with Calvin by chillydawg on Saturday February 25, 2017 @05:52AM (#13731009)

Relaxing disk commits is a quick route to data loss. Might as well use mongo at that point.

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Re:120K distributed consistent writes per second with Calvin by qaq on Saturday February 25, 2017 @09:21AM (#13731683)

commit_delay does not relax anything it's just increases latency to group multiple commits

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