[ale] Lack of speed up

Leam Hall leamhall at gmail.com
Sun Apr 27 15:40:13 EDT 2025


Hey all, I'm mildly stumped by a lack of performance issue, and could use insight.

A friend was running Hyper-V on a Windows laptop, and spun an Ubuntu image with 8 cores to run some Python based analysis on two datasets. The datasets were roughly 150 and 190 MB respectively, and running one command line with & took about three hours. All eight cores were roughly 45% utilized, though with Hyper-V I'm not sure if that's cores assigned to the Ubuntu instance, or on the host machine. There was no memory swapping, and top showed one Python process.

He wanted things a bit faster, so I suggested opening a second terminal and running the command on each dataset separately, not in series. The load on all 8 cores went up about 15%, there were two Python processes, but the processes still took 3 hours.

Is this a Hyper-V based issue, or something else?

Thanks!

Leam

-- 
Software Engineer         (reuel.net/career)
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Coding Ne'er-do-well      (github.com/LeamHall)

Between "can" and "can't" is a gap of "I don't know", a place of discovery. For the passionate, much of "can't" falls into "yet". -- lh

Practice allows options and foresight. -- lh


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