Dissapointing performance of ciss RAID 0+1 ?

Ivan Voras ivoras at fer.hr
Thu Nov 9 11:45:07 UTC 2006

Pete French wrote:

>> - How does your performance compare when using dd on the raw devices (in 
>> order: da0, da0s1, da0s1a...) vs when using it on the file system? (Poor 
>> performance might indicate FS vs stripe alignment issues)
> Raw dd gives 50 meg/second

On /dev/da1, with a reasonable block size (1m)?

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