[Samba] Transfer speed

[Emmanuel Florac]

Le Mon, 9 Apr 2012 10:02:20 -0700 vous écriviez:

> I think it's seen a lot of improvements recently w.r.t.
> multiple outstanding reads/writes, but I'm not sure
> what kernel version this went into.
> 

Dramatic improvement indeed:

kernel 2.6.35
writing with dd if=/dev/zero bs=1M:
1073741824 octets (1,1 GB) copés, 15,393 s, 69,8 MB/s 

reading with dd:
2147483648 octets (2,1 GB) copiés, 62,5917 s, 34,3 MB/s

kernel 3.2.14

writing:
1073741824 octets (1,1 GB) copiés, 9,83073 s, 109 MB/s

reading:
2147483648 octets (2,1 GB) copiés, 18,2867 s, 117 MB/s read

This was done with the same client and the same server. The client
simply was rebooted from a kernel to the other.

cheers!
-- 
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