> > Raw dd gives 50 meg/second > On /dev/da1, with a reasonable block size (1m)?
Block size is 2meg. I was using da1s1 and da1s2 which were giving me 50 and 47 meg/second resepctively - if I switch to da1 on it's own I get 59 meg/second. reading from the filesystem with the vfs.read_max set to 64 I now get 112 meg/second though ?!!! how can the filesystem give me better performance than the raw device ? I do not think this is a caching issue as I am using a test file nearly twice the size of the RAM in the system to get round this. I am delighted by the performance increase, but the results do not make sense. -pete. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
