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Nitsan
Nitsan "Yak" Wakart
@nitsanw
What I post here should not even be seriously considered as my views, let alone anybody elses.
Sep 13, 2021 • 8 tweets • 2 min read
Using JMC to view your allocation/lock/IO profiles (regardless of where your JFR data came from)?

The profiles don't reflect the quantity you are interested in, and that can be very misleading.
Consider allocation profiling for instance. 1/n The "Memory/TLAB" tabs in JMC will show you lists of allocation quantity/ration broken up by instance class/method/thread. The chart will show an allocation bar chart. The units here are appropriate: byte/KiB/MiB/GiB.

But if you look at the profile, the unit has changed! 2/n