8d8e484d9c
Since AVL already has embedded element counter, use dn_dbufs_count only for dbufs not counted there (bonus buffers) and just add them. This removes two atomics per dbuf life cycle. According to profiler it reduces time spent by dbuf_destroy() inside bottlenecked dbuf_evict_thread() from 13.36% to 9.20% of the core. This counter is used only on illumos, so for FreeBSD it was just a waste of time. MFC after: 2 weeks |
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| common | ||
| uts | ||
| OPENSOLARIS.LICENSE | ||