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本帖最后由 cccdbmw 于 2013-03-14 21:09 编辑
正式服务器
第一次
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 16.8798 seconds, 146 MB/s
real 0m16.894s
user 0m0.064s
sys 0m6.050s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.54539 seconds, 1.6 GB/s
real 0m1.547s
user 0m0.032s
sys 0m1.516s
第二次
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 17.1126 seconds, 144 MB/s
real 0m18.452s
user 0m0.058s
sys 0m7.107s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.61596 seconds, 1.5 GB/s
real 0m1.619s
user 0m0.022s
sys 0m1.570s
第三次
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 48.8728 seconds, 50.3 MB/s
real 0m49.543s
user 0m0.071s
sys 0m8.997s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.58619 seconds, 1.5 GB/s
real 0m1.588s
user 0m0.021s
sys 0m1.568s
测试服务器
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 8.4215 seconds, 292 MB/s
real 0m8.424s
user 0m0.050s
sys 0m5.990s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.74364 seconds, 1.4 GB/s
real 0m1.746s
user 0m0.026s
sys 0m1.717s
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 5.37527 seconds, 457 MB/s
real 0m19.198s
user 0m0.062s
sys 0m6.095s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.67039 seconds, 1.5 GB/s
real 0m1.672s
user 0m0.026s
sys 0m1.643s
time dd if=/dev/zero of=/tmp/test bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 5.36442 seconds, 458 MB/s
real 0m19.233s
user 0m0.058s
sys 0m6.212s
time dd if=/tmp/test of=/dev/null bs=8k
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.80816 seconds, 1.4 GB/s
real 0m1.810s
user 0m0.028s
sys 0m1.782s
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