For raid devices, i have observed that if size of bytes written is greater than the chunk size the read,write performance decreases.For size lesser than the chunk size the performance improves. Please let me know your opinion. Thanks Jay - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html