The allocation sizes are rounded in the normal view, but still rounded in the tooltips. Especially when the allocations are bigger (>1MB) it is hard to compare between multiple runs as there is no easy way I could spot to see the exact amount of allocated memory.
Git commit 103cc2a96fabf6a694026f20c5421c23cb775e35 by Milian Wolff. Committed on 28/04/2017 at 11:34. Pushed by mwolff into branch 'master'. Include raw byte size in tooltips When the size is larger than 1KB we lose some precision. In such cases also show the raw byte size in parenthesis after the shortened value to allow accurate manual comparisons. M +15 -5 src/analyze/gui/chartmodel.cpp https://commits.kde.org/heaptrack/103cc2a96fabf6a694026f20c5421c23cb775e35
There are more places where this is needed, i.e. basically all other tabs.