On Wednesday, 21 October 2015 at 09:59:09 UTC, Kapps wrote:
On Wednesday, 21 October 2015 at 04:17:19 UTC, Laeeth Isharc
wrote:
Seems like you now get 2.1 gigbytes/sec sequential read from a
cheap consumer SSD today...
Not many consumer drives give more than 500-600 MB/s (SATA3
limit) yet. There are only a couple that I know of that reach
2000 MB/s, like Samsung's SM951, and they're generally a fair
bit more expensive than what most consumers tend to buy (but at
about $1 / GB, still affordable for businesses certainly).
Yes - that's the one I had in mind. It's not dirt cheap, but at
GBP280 if you have some money and want speed, the price is hardly
an important factor. I should have said consumer grade rather
than consumer, but anyway you get my point.
That's today, in 2015. Maybe one can do even better than that by
striping data, although it sounds like it's not that easy, but
still. "The future is here already; just unevenly distributed".
Seems like if you're processing JSON, which is not the most
difficult task one might reasonably want to be doing, then
CPU+memory is the bottleneck more than the SSD. I don't know
what outlook is for drive speeds (except they probably won't go
down), but data sets are certainly not shrinking. So I am
intrigued by the difference between what people say is typical
and what seems to be the case, certainly in what I want to do.
