delphij
e284683f74
MFV r274271:
Improve zdb -b performance:
- Reduce gethrtime() call to 1/100th of blkptr's;
- Skip manipulating the size-ordered tree;
- Issue more (10, previously 3) async reads;
- Use lighter weight testing in traverse_visitbp();
Illumos issue:
5243 zdb -b could be much faster
MFC after: 2 weeks
2014-11-08 07:30:40 +00:00
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