Hello, Several pages including http://linux-iscsi.org/wiki/Targetcli#Create_a_backstore seems to suggest that you should use iblock as the backstore for production setups. However from our tests we see that performance is significantly decreased compared with buffered fileio. In our tests we found a 2-4x difference. I understand obviously that buffered io is less safe than unbuffered but it's not clear for me why performance is so much different. One of the greatest features of fileio is that you essentially use all your system memory as cache... something which is not very highlighted. Personally I don't understand why buffered fileio is not highlighted as it's clearly giving the best performance. Thanks. -- Henrik -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
