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Further , the high-level interface also reduces the Xen VMM execution overhead by a factor of 1.9 , and the driver domain overhead by a factor of 2.1 . Overall , the optimizations improve the transmit throughput of guest domains by a factor of 4.4 , and the receive throughput in the driver domain by 35 % . Especially designed or prepared vacuum seals , with seal feed and seal exhaust connections , for sealing the shaft connecting the compressor or the gas blower rotor with the driver motor so as to ensure a reliable seal against in-leaking of air into the inner chamber of the compressor or gas blower which is filled with UF 6 . These improvements in performance can be shown to be in direct correspondence with the reduction in TLB misses in the driver domain . Then use the downloaded driver file when you access the driver information in the device manager . It offers multi-stop route planning , a " detour " button to route quick trips around traffic snarls and a " Go Home " button that directs the driver home from any location . The high cost of this operation in the profile indicates that the driver domain is under memory pressure , in which scenario the socket buffer memory allocator constantly frees its buffer pages and then zeroes out newly acquired pages . The driver laser has also been down-sized , and at present , a 10-TW laser can be set up in an area of a few meters square .