mirror of https://github.com/golang/go.git
39 lines
1.4 KiB
Markdown
39 lines
1.4 KiB
Markdown
## Runtime {#runtime}
|
|
|
|
<!-- go.dev/issue/71517 -->
|
|
|
|
The message printed when a program exits due to an unhandled panic
|
|
that was recovered and repanicked no longer repeats the text of
|
|
the panic value.
|
|
|
|
Previously, a program which panicked with `panic("PANIC")`,
|
|
recovered the panic, and then repanicked with the original
|
|
value would print:
|
|
|
|
panic: PANIC [recovered]
|
|
panic: PANIC
|
|
|
|
This program will now print:
|
|
|
|
panic: PANIC [recovered, repanicked]
|
|
|
|
<!-- go.dev/issue/71546 -->
|
|
|
|
On Linux systems with kernel support for anonymous VMA names
|
|
(`CONFIG_ANON_VMA_NAME`), the Go runtime will annotate anonymous memory
|
|
mappings with context about their purpose. e.g., `[anon: Go: heap]` for heap
|
|
memory. This can be disabled with the [GODEBUG setting](/doc/godebug)
|
|
`decoratemappings=0`.
|
|
|
|
<!-- go.dev/issue/73581 -->
|
|
|
|
A new experimental garbage collector is now available as an experiment. The
|
|
new design aims to improve the efficiency of garbage collection through better
|
|
locality and CPU scalability in the mark algorithm. Benchmark result vary, but
|
|
we expect somewhere between a 10—40% reduction in garbage collection overhead
|
|
in real-world programs that heavily use the garbage collector.
|
|
|
|
The new garbage collector may be enabled by setting `GOEXPERIMENT=greenteagc`
|
|
at build time. See the [GitHub issue](/issue/73581) for more details on the design
|
|
and instructions on how to report feedback.
|