[mythtv-users] OT: which NAS-appliance can you recommand

Yeechang Lee ylee at pobox.com
Sun Apr 8 01:05:15 UTC 2007


I wrote earlier:
> I've done very, very little work in terms of optimizing the
> (gigabit) network performance. Over CIFS, here's what I get when
> writing from the frontend/backend to the RAID 6 array:
> 
>     rm -rf 20gb; time dd if=/dev/zero of=20gb bs=1024k\ count=20000;
>     rm -rf 20gb # My write test
> 
>     20971520000 bytes (21 GB) copied, 913.41 seconds, 23.0 MB/s
> 
> Pretty crummy, eh? But nonetheless, it's a) twice what I typically got
> from the Infrant NAS and b) enough to handle my needs.

I should have thought about the above a little more. By undoing a
recent "improvement"[1] I'd made to my CIFS kernel-module options, I
instantly doubled the throughput back to the 50MB+ I was seeing a few
weeks ago. Still not quite the theoretical wirespeed-maximum 125MB/s
over gigabit, but it works for me.

[1] In /etc/modules.conf, I changed

    options cifs CIFSMaxBufSize=32768,cifs_min_rcv=16,
    cifs_min_small=64,cifs_max_pending=128

back to just

    options cifs CIFSMaxBufSize=32768 (or 65536; I saw no difference)

-- 
Yeechang Lee <ylee at pobox.com> | +1 650 776 7763 | San Francisco CA US


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