Peter's blog

Both Kingston and SanDisk 16GB pendrive has the same price range. I was curious for comparing them. The overall performance is poor, but is a bit better than Kingston DT101. Write performance: 4.2 MB/s ReWrite performance: 3.5 MB/s Read performance: 24.5 MB/s Random Seeks: 657.4 / sec Comparing to Samsung S2 Portable 500GB USB 2.0 External HD: 8.2 times slower for write 4.9 times slower for rewrite 1.8 times slower for reading 5.3 times more seeks / sec Full performance output: [root@ace ~]# bonnie++ -n 0 -u 0 -r 7000 -f -b -d /mnt Using uid:0, gid:0. Writing intelligently...done Rewriting...done Reading intelligently...done start 'em...done...done...done...done...done... Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP ace.home 14G 4265 0      3

I was curious about Kingston USB flash performance. The overall performance is poor. Write performance: 3.7 MB/s ReWrite performance: 3.0 MB/s Read performance: 22.5 MB/s Random Seeks: 4.3 / sec Comparing to Samsung S2 Portable 500GB USB 2.0 External HD: 9.4 times slower for write 5.7 times slower for rewrite 2.0 times slower for reading 28.79 times less seeks / sec Full performance output: [root@ace ~]# bonnie++ -n 0 -u 0 -r 7000 -f -b -d /mnt Using uid:0, gid:0. Writing intelligently...done Rewriting...done Reading intelligently...done start 'em...done...done...done...done...done... Version  1.96       ------Sequential Output------ --Sequential Input- --Random- Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP ace.home        14G            3708   0  3063   0           22568   3   4.3   0 Latency                        6309ms   22399ms