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Table 2. The write transfer rates for a later version of the

write cmd. dd=if=/dev/zero of=/dev/nda bs=4096 count=8000
NBD bs=4K 0.02user 1.84system 0:11.33elapsed 17.0%CPU 2.89MBps
write cmd. dd=if=/dev/zero of=/dev/nbd bs=4096 count=8000
e2fs async,bs=4K/
NBD bs=4K 0.03user 2.27system 0:08.11elapsed 28.4%CPU 0.75MBps
write cmd. dd=if=/dev/zero of=/dev/nbd bs=4096 count=8000
e2fs sync,bs=4K/I
NBD bs=4K 0.03user 2.26system 0:17.12elapsed 13.4%CPU 1.88MBps
write cmd. dd=if=/dev/zero of=/dev/nfs bs=4096 count=8000
NFS r/wsize=4K 0.03user 3.94system 0:35.18elapsed 11.0%CPU 0.93MBps