Possible memory leak issue

[j-mie6]

I have a set of benchmarks of the form:

[ env (pure veryLargeData (\data -> bench ... (nf g data)
, env (pure largeData) (\data -> bgroup "second" [bench ... (nf f1 data), bench ... (nf f2 data), etc]
, env (pure otherData) (... same f1..fn as above)

What I'm seeing is that if I have all these benchmarks on, my RAM usage is significantly higher in total. Here are the stats:

• just the first benchmark on its own: 7.6GB peak memory
• just the second benchmark on its own: 5.2GB peak memory
• just the third benchmark on its own: 20MB peak memory

Now for the fun bit:

• the second and then the third together: 5.2GB peak then 6.9GB peak for the second set (!?!?!)
• all three together 7.6GB peak, 9.5GB peak, 14GB peak (!!!!)

Any ideas what this could be?

[Bodigrim]

Could you share a full reproducer?

[j-mie6]

I can email something over. Any preferred email address?

[Bodigrim]

The one in my profile please.

[Bodigrim]

@j-mie6 just a gentle reminder to share a reproducer.

[j-mie6]

Yup, don't worry, I haven't forgotten, just been a bit swamped with term-time!