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Date:      Sat, 27 Sep 2014 11:13:55 +0200
From:      "Nagy, Attila" <bra@fsn.hu>
To:        freebsd-fs <freebsd-fs@freebsd.org>
Subject:   Re: 16 exabytes of L2ARC?
Message-ID:  <54267FD3.2080603@fsn.hu>
In-Reply-To: <542560C1.9070207@fsn.hu>
References:  <542560C1.9070207@fsn.hu>

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On 09/26/14 14:49, Nagy, Attila wrote:
> 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)
I've removed the cache devices and re-added them, now it's fine:
cache           -      -      -      -      -      -
   ada0       355M   372G     24      0   151K      0
   ada1       345M   372G     12    505  71.7K  2.79M




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