The 30% is 46%, and it stops dead at 80 bytes
Go 1.27's size-specialised allocation is worth up to 46% on the pointer-containing path, not the 30% announced — and from 96 bytes up it is worth nothing.
#allocation
Articles tagged “allocation”
3 articlesPerformance and measurement
sync.Pool survives one GC, not two
A pool holding 100 objects lost none across one collection and all 100 across two. Here is the victim cache, and what it costs at 122,000 ops per millisecond.
Escape analysis is not a rule of thumb
The compiler said "does not escape" and the benchmark reported 104 KiB per operation. Both were right. What -gcflags=-m actually tells you.