????????virtio??????sheepdog???????в??????
1qemu-system-x86_64 --enable-kvm -m 4096 -smp 4 -drive
2file=sheepdog:mint??index=0
3-drive file=sheepdog:data??index=1 -vnc :1 -daemonize

??????????1????????????
??????????????virtio????????????????б??

???????С??????д????????????

????????С??16KB-512KB?????????????????????10MB/s-30MB/s????
????????С??16KB-256KB?????????д???????????5MB/s-8MB/s????
?????????????????????????????????????virtio???????????????????????????в????

????????С??2MB????4MB???????????????????80MB/s-90MB/s
?????????????512MB?μ???????????????????￡????????sheepdog??д512MB???????????????????

 

??????????2??????????
?????????棬????д???????????????????С??????????????????????С??????????檔

????????virtio???????????????????????????????
????SSD?????????????????????????????????С?4MB??????￡????????????????240MB/s?????д???130MB/s???????????С???16KB???????????д??????????????55MB/s??35MB/s??