Pinning down my bottleneck

I’m interested in learning more about finding my bottleneck.

I have extra ram (whopping 240) and extra cores (32 across 2 chips! But from 2010) ,but not a ton of ssd. Is there a way to show that the disk is what is clogging the pipe?

The reason I ask: I once tried a ram disk, didn’t see much speed boost, which really shocked me and made me wonder where the squeeze was.

Ubuntu, happy to run benchmarks.
Everything formatted “standard” ext4
All storage behind hardware raid-0 (both the 3 ssd for plotting and 14 x 1tb for farming)

Getting 8h plot times.

Single core performance matters quite a lot. So my first guess would be that the old cpu simply can’t plot any faster. 8 hour plot times really isn’t that bad though.


Great guess. Now I’m looking into how to test. A single core benchmark, should beat…?

2 chips, 16 threads, 32 cores.

Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz
Package Information
Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz 0 0:0 3400.00 MHz

You want to max the thread usage (parallel plotting), so you want to be plotting at least 16 plots at once or 32 (single thread each), depending on the amount of fast storage you have available.

This. Phases two through four are all single core.

PS: I’m gathering diagnostic ideas at