On 7/30/19 11:20 AM, Ulrich Windl wrote:
Don't get me wrong: We can make it big (CPUs, RAM, Disks, energy consumption ,cooling requirement), but isn't "making it small" more of an art? Today's software mostly isn't "using a lot of memory" but rather "wasting a lot of memory" IMHO.
lmdb's memory and disk footprint is small. My Æ-DIR development VMs are really small (~200 MB RAM) and there are various web components running on the providers.
I even tested this stuff with Raspberry PI model 1. And it did not consume too much resources. (Of course SD cards have really slow disk I/O.)
AFAICS there is only one case where back-mdb is significantly slower than back-hdb: ITS#8875. But this is actively worked on.
So stop spreading FUD about lmdb. If you provide real-world evidence that back-mdb consumes more resources than back-hdb then present seriously worked out test results.
Ciao, Michael.