Date: Fri, 26 Sep 2014 14:49:05 +0200 From: "Nagy, Attila" <bra@fsn.hu> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: 16 exabytes of L2ARC? Message-ID: <542560C1.9070207@fsn.hu>
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Hi,
Running stable/10@r271944:
# zpool iostat -v
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
data 17.3T 40.7T 165 1.24K 1.63M 90.8M
da0 4.31T 10.2T 41 318 418K 22.7M
da1 4.32T 10.2T 41 317 416K 22.7M
da2 4.32T 10.2T 41 317 416K 22.7M
da3 4.31T 10.2T 41 317 418K 22.7M
cache - - - - - -
ada0 513G 16.0E 222 179 1.05M 2.79M
ada1 511G 16.0E 222 180 1.05M 2.80M
---------- ----- ----- ----- ----- ----- -----
# egrep 'ada.*MB' /var/run/dmesg.boot
ada0: 600.000MB/s transfers (SATA 3.x, UDMA5, PIO 512bytes)
ada0: 381554MB (781422768 512 byte sectors: 16H 63S/T 16383C)
ada1: 600.000MB/s transfers (SATA 3.x, UDMA5, PIO 512bytes)
ada1: 381554MB (781422768 512 byte sectors: 16H 63S/T 16383C)
What did go wrong and what should I expect?
lz4 compression is enabled on the pool and it has ashift=12.
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