... but the arc_buf_add_ref() function served a second undocumented purpose of updating the ARC access information when taking a hold on a dbuf. Without this logic in place a cached dbuf would not migrate its associated arc_buf_hdr_t to the MFU list. This would negatively impact the ARC hit rate, particularly on systems with a small ARC.
Eugene -- Поэты - страшные люди. У них все святое. --- slrn/1.0.2 (FreeBSD) * Origin: RDTC JSC (2:5006/1@fidonet)
