| commit | 8e24283a28f9b739cdbd990994c9c98e3855f7ed | [log] [tgz] |
|---|---|---|
| author | Austin Clements <austin@google.com> | Fri Mar 13 13:29:23 2015 -0400 |
| committer | Austin Clements <austin@google.com> | Tue Apr 21 15:35:09 2015 +0000 |
| tree | bb5b187275b32544d7c6c562f6e57df2c7fa7d0c | |
| parent | 4e9fc0df4837d6c786fd79344019b25ac4b06eea [diff] |
runtime: track background scan work credit This tracks scan work done by background GC in a global pool. Mutator assists will draw on this credit to avoid doing work when background GC is staying ahead. Unlike the other GC controller tracking variables, this will be both written and read throughout the cycle. Hence, we can't arbitrarily delay updates like we can for scan work and bytes marked. However, we still want to minimize contention, so this global credit pool is allowed some error from the "true" amount of credit. Background GC accumulates credit locally up to a limit and only then flushes to the global pool. Similarly, mutator assists will draw from the credit pool in batches. Change-Id: I1aa4fc604b63bf53d1ee2a967694dffdfc3e255e Reviewed-on: https://go-review.googlesource.com/8834 Reviewed-by: Rick Hudson <rlh@golang.org>
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