On 12.02.2019 21:37, Eugene Grosbein wrote: >> vfs.zfs.arc_max=1216348160 > > Each line shows how many megabytes is allocated but currently unused by > corresponding > UMA zone (and unavailable for other consumers). Your numbers are pretty low, > you have nothing to worry about IMHO. I have hundreds of megabytes and > gigabytes there. I'm have same problem.
According to top(1) I have 29G Wired, but only 17G Total ARC (12G
difference! System has 32G of RAM), and this statistic shows:
5487.5 zio_data_buf_524288
920.125 zio_data_buf_131072
626 zio_buf_131072
468 zio_data_buf_1048576
398.391 zio_buf_16384
305.464 dnode_t
227.989 zio_buf_512
171.5 zio_data_buf_458752
141.75 zio_data_buf_393216
116.456 dmu_buf_impl_t
So, more than 6G (!) is not used in ARC, but hold by ZFS anyway.
--
// Lev Serebryakov
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