Hi I use the kernel module. I found only one mount parameter for readahead: rsize. But didnt help.
> These settings are a bit silly. I think what you've got there is > logically equivalent to having the stripe_unit and object_size both > set to 512KB, but I'm not certain. 512KB is also a bit small for an FS > object; why did you change it from the defaults at all? With streaming > media you're probably better off with larger than smaller chunks... > I did not know that transfers are byte, stripe or object based. I changed back to default sizes, but the incoming bandwidth is still high: http://elbandi.net/ceph/ceph_bandwidth2.png<http://elbandi.net/ceph/ceph_bandwidth.png> I tested some combinations, but all was unsuccessful. Sometimes the difference was more than 10x (8G incoming, ~700Mbit outgoing). Can i somehow log the kernel read request size and the osd response size? Elbandi
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