IOMeter
Now it's time to look at IOMeter results. In the first table, you can see sequential results taken with single drive and RAID 0 array configurations with both the J-Micron and Intel ICH8R controller. Strangely enough, IOMeter recorded '0' maximum access time with Intel ICH8R, so maybe we should disregard that measurement for this article.| Sequential | J-Micron |
Intel | ||
| Deskstar 160 GB single | Caviar 160 GB single | Deskstar 160 GB single | Caviar 160 GB single | |
| ReadOps | 2390.79 | 2438.04 | 2374.32 | 2372.61 |
| ReadMBs | 74.71 | 76.19 | 74.2 | 73.81 |
| Average Access Time | 0.42 | 0.41 | 0.42 | 0.42 |
| Maximum Access Time | 11.53 | 9.98 | 0 | 0 |
| CPU Utilization | 2.87 | 2.77 | 3.19 | 3 |
| WriteOps | 2380.76 | 2433.4 | 2240.78 | 2437.63 |
| WriteMBs | 74.4 | 76.04 | 70.02 | 76.18 |
| Average Access Time | 0.42 | 0.41 | 0.45 | 0.41 |
| Maximum Access Time | 18.43 | 14.01 | 0 | 0 |
| CPU Utilization | 3.31 | 2.81 | 2.72 | 3.18 |
| J-Micron | Intel | |||
| Deskstar 160 GB array | Caviar 160 GB array | Deskstar 160 GB array | Caviar 160 GB array | |
| ReadOps | 2989.39 | 3351.38 | 2889.73 | 3306.42 |
| ReadMBs | 93.42 | 104.73 | 90.31 | 103.26 |
| Average Access Time | 0.33 | 0.3 | 0.37 | 0.33 |
| Maximum Access Time | 16.05 | 10.45 | 0 | 0 |
| CPU Utilization | 6.96 | 6.22 | 7.87 | 8.7 |
| WriteOps | 2698.06 | 2698.24 | 2865.97 | 2955.46 |
| WriteMBs | 84.32 | 84.32 | 89.56 | 92.37 |
| Average Access Time | 0.37 | 0.37 | 0.37 | 0.36 |
| Maximum Access Time | 1.7 | 16.24 | 0 | 0 |
| CPU Utilization | 4.24 | 4.31 | 7.96 | 8.51 |
These are averages from three runs - according to these results, there's very little separating the 160 GB Hitachi Deskstars and Western Digital Caviars in single drive configuration when average read and write is concerned. We're even seeing the same trend in lower average write performance with HD Tach on the Hitachi Deskstar with Intel's ICH8R. Moving on to RAID 0 configurations, we see the opposite of what we saw in HD Tach - the Caviar's average write is actually better than the Deskstars - on both controllers. As for CPU utilization, according to this, the Intel ICH8R has slightly higher utilization - particularly with writes.
| Random | J-Micron | Intel | ||
| Deskstar 160 GB single | Caviar 160 GB single | Deskstar 160 GB single | Caviar 160 GB single | |
| ReadOps | 71.61 | 71.82 | 72.66 | 72.15 |
| ReadMBs | 2.24 | 2.24 | 2.27 | 2.25 |
| Average Access Time | 13.96 | 13.92 | 13.79 | 13.91 |
| Maximum Access Time | 26.55 | 27.34 | 0 | 0 |
| CPU Utilization | 0.1 | 0.1 | 0.17 | 0.14 |
| WriteOps | 103.57 | 120.04 | 113.67 | 121.72 |
| WriteMBs | 3.24 | 3.75 | 3.55 | 3.8 |
| Average Access Time | 9.63 | 8.33 | 8.76 | 8.22 |
| Maximum Access Time | 615.79 | 32.45 | 0 | 0 |
| CPU Utilization | 0.13 | 0.16 | 0.18 | 0.24 |
| J-Micron | Intel | |||
| Deskstar 160 GB array | Caviar 160 GB array | Deskstar 160 GB array | Caviar 160 GB array | |
| ReadOps | 69.44 | 69.81 | 70.5 | 69.72 |
| ReadMBs | 2.17 | 2.18 | 2.2 | 2.18 |
| Average Access Time | 14.4 | 14.32 | 14.24 | 14.43 |
| Maximum Access Time | 29.67 | 26.51 | 0 | 0 |
| CPU Utilization | 3.72 | 3.96 | 3.4 | 3.64 |
| WriteOps | 115.91 | 183.17 | 169.54 | 183.65 |
| WriteMBs | 3.62 | 5.72 | 5.3 | 5.74 |
| Average Access Time | 8.57 | 5.46 | 5.87 | 5.47 |
| Maximum Access Time | 862.22 | 32.33 | 0 | 0 |
| CPU Utilization | 14.07 | 16.08 | 3.79 | 4.04 |
Next are random test results. As expected, in single drive configuration the results between the J-Micron and Intel ICH8R is similar. The only difference seem to be slightly higher random average write on Hitachi Deskstar when paired with ICH8R. With RAID 0 configurations, the boost is much more noticeable - write operations rose from 115.91 op/s to 169.54 op/s and random average writes rose from 3.62 MB/s to 5.3 MB/s on the Deskstar array. We do not see any difference on the Caviar array with the J-Micron and Intel ICH8R controller.
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