«

»

Crucial MX100 Solid State Drive Review

PAGE INDEX

<< PREVIOUS            NEXT >>

Iometer IOPS Performance

Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. Iometer does for a computer’s I/O subsystem what a dynamometer does for an engine: it measures performance under a controlled load. Iometer was originally developed by the Intel Corporation and formerly known as “Galileo”. Intel has discontinued work on Iometer, and has gifted it to the Open Source Development Lab (OSDL). There is currently a new version of Iometer in beta form, which adds several new test dimensions for SSDs.

Iometer is both a workload generator (that is, it performs I/O operations in order to stress the system) and a measurement tool (that is, it examines and records the performance of its I/O operations and their impact on the system). It can be configured to emulate the disk or network I/O load of any program or benchmark, or can be used to generate entirely synthetic I/O loads. It can generate and measure loads on single or multiple (networked) systems.

To measure random I/O response time as well as total I/O’s per second, Iometer is set to use 4KB file size chunks over a 100% random sequential distribution at a queue depth of 32 outstanding I/O’s per target. The tests are given a 50% read and 50% write distribution. While this pattern may not match traditional ‘server’ or ‘workstation’ profiles, it illustrates a single point of reference relative to our product field.

All of our SSD tests used Iometer 1.1.0 (build 08-Nov-2010) by Intel Corporation to measure IOPS performance, using a SandForce-created QD30 configuration: 4KB 100 Random 50-50 Read and Write.icf. The chart below illustrates combined random read and write IOPS over a 120-second Iometer test phase, where highest I/O total is preferred:

Iometer_Random_4K-IOPS_30QD_Results

In our Iometer tests, which are configured to use 32 outstanding I/O’s per target and random 50/50 read/write distribution, SandForce SSDs generally outperform the competition when tested with this large queue depth.

To date, the OCZ Vector 150 and Vector 450 SSDs have delivered the best combined IOPS performance we’ve seen from any SATA-based drive with 88299 and 87323 respectively. The OCZ Vertex 4 (83494) and Vertex 3 Max IOPS Edition (83117) trail behind with notable scores, before the Intel 520 SSD (80433) and Intel 335 (80015).

The Crucial MX100 produced 68718, which is immediately trailed by 68146 IOPS from the Crucial M550. It should be noted that nearly all modern SSDs deliver I/O far beyond the needs of multi-tasking power users and hardcore gamers, and would be ideal for workstation systems running utilizing virtual machines.

In our next section, we test linear read and write bandwidth performance and compare its speed against several other top storage products using EVEREST Disk Benchmark. Benchmark Reviews feels that linear tests are excellent for rating SSDs, however HDDs are put at a disadvantage with these tests whenever capacity is high.


SKIP TO PAGE:

<< PREVIOUS            NEXT >>

2 comments

  1. Russell Ehrgood

    hello,

    I was reading the review for the Crucial MX-100 512GB and noticed that the Crucial MX100 SSD Conclusion was tagged wrong in the drop down box, it was tagged as 10. Crucial M550 SD Conclusion. I would just like to bring it to your attention. Thanks.

    1. Olin Coles

      Thank you, I got it fixed. Glad this article is still proving useful for people.

Leave a Reply

Your email address will not be published. Required fields are marked *

CAPTCHA Image

*

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>