IOMeter – IOps
Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. It was originally developed by the Intel Corporation and announced at the Intel Developers Forum (IDF) on February 17, 1998 – since then it got wide spread within the industry.
Meanwhile Intel has discontinued to work on Iometer and it was given to the Open Source Development Lab (OSDL). In November 2001, a project was registered at SourceForge.net and an initial drop was provided. Since the relaunch in February 2003, the project is driven by an international group of individuals who are continuesly improving, porting and extend the product.
We are running new version of IOMeter, but with a similar configuration as compared with prior versions (i.e. compressibility of data, etc), as to maintain consistency across the test data pool.
Light desktop usage sees QD figures between 1 and 4. Heavy / power user loads run at 8 and higher. Most SSD's are not capable of effectively handling anything higher than QD=32, which explains the plateaus. Regarding why we use this test as opposed to single-tasker tests like 4KB random reads or 4KB random writes, well, computers are just not single taskers. Writes take place at the same time as reads. We call this mixed-mode testing, and while a given SSD comes with side-of-box specs that boast what it can do while being a uni-tasker, the tests above tend to paint a very different picture.
SSDs equipped with the Silicon Motion controller are very consistent within a narrow band of results on read specific tests (Web Server), while tests that introduce writes (File Server / Database / Workstation) show the resulting impact of limited write speeds in the 256GB and 128GB variants.
Dem charts.
Dem charts.
Like ’em?
Like 'em?
They are pretty, but I think
They are pretty, but I think once you get beyond three colors, you might consider shading them in to help differentiate between them.
The colour scheme and glow
The colour scheme and glow work really well together. Though some of the darker colours are harder to see in such a busy chart. Maybe slightly wider bars? Nice work Allyn _b
Thanks! The issue with the
Thanks! The issue with the darker colors boils down to there simply not being enough 'good' differentiating colors to choose from, especially when trying to span 10 (or more in the future) entries. Still working on these moving forward.
I do understand there just
I do understand there just aren’t enough colors to offer clear differentiation.
But, since you ensured the drives were listed in both the chart and the legend in the same order, I was able to easily figure out which drive was which when I couldn’t tell easily by the color.
Good attention to detail that other sites often mess up.
Sharp write speed limits at
The charts for the PCP file
The charts for the PCP file creation tests need to have their x-axis label updated. They are labeled “MB/s” but I suspect they should be “seconds”.
I’m not even sure why Random
I’m not even sure why Random Access Time is mentioned with SSDs anymore- they all look the same. At this point,they pwn HDs.
Nice product, but 5 year warranty would have been more appealing.
good to see lower prices
good to see lower prices
Thanks for doing the review.
Thanks for doing the review. I know you must be very tired of SSD right now, but it’s good to see you do them so we the consumer can see the price point and accessories that come with drive, keep it up Allyn 🙂