[root@gpu - server - 003 tmp] # time dd if=/dev/zero of=/mnt2/test bs=8k count=1000000 1000000 + 0 records in 1000000 + 0 records out 8192000000 bytes ( 8.2 GB) copied, 5.60322 s, 1.5 GB / s real 0m5 . 620s user 0m0 . 078s sys 0m5 . 525s [root@gpu - server - 003 tmp] # [root@gpu - server - 003 tmp] # time dd if=/dev/zero of=/mnt/test bs=8k count=1000000 1000000 + 0 records in 1000000 + 0 records out 8192000000 bytes ( 8.2 GB) copied, 6.41214 s, 1.3 GB / s real 0m6 . 414s user 0m0 . 097s sys 0m6 . 318s [root@gpu - server - 003 tmp] # You have new mail in / var / spool / mail / root [root@gpu - server - 003 tmp] # [root@gpu - server - 003 tmp] # time dd if=/mnt2/test of=/dev/null bs=8k 1000000 + 0 records in 1000000 + 0 records out 8192000000 bytes ( 8.2 GB) copied, 1.62227 s, 5.0 GB / s real 0m1 . 624s user 0m0 . 082s sys 0m1 . 541s [root@gpu - server - 003 tmp] # [root@gpu - server - 003 tmp] # time dd if=/mnt/test of=/dev/null bs=8k 1000000 + 0 records in 1000000 + 0 records out 8192000000 bytes ( 8.2 GB) copied, 1.81242 s, 4.5 GB / s real 0m1 . 814s user 0m0 . 073s sys 0m1 . 739s |
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