3 ms·
So is the takeaway that data in the RAM of some server connected by fast network is sometimes "closer" in retrieval time than that same data on a local SSD?
by cwoolfe 4y ago
So is the takeaway that data in the RAM of some server connected by fast network is sometimes "closer" in retrieval time than that same data on a local SSD?
- staticassertion 4y agoNot really. The issue is with throttling.
- philsnow 4y agoBack in ~2003 I had bought a new motherboard + cpu (a Duron 800MHz IIRC) but as a poor college kid, only had enough money left over for 128MB of RAM.. but the system I was replacing had ~768MB. I made a ~640MB ramdisk on the old system and mounted it on the new system as a network block device, and the result was much, much faster than local swap (this was before consumer SSDs though). [0] "nbd" / https://en.wikipedia.org/wiki/Network_block_device https://en.wikipedia.org/wiki/Network_block_device ; this driver is of course still in the kernel; you could do this today with an anemic raspberry pi if you wanted
- adamius 4y agoNow I'm imagining a rack of raspis acting as one giant ram swap drive over nbd. This could work for a given value of "work". cost of pi vs stick of ram. A kv storage as well perhaps. Then again, whats a TB worth on just one xeon server? Probably cheaper... or not?