IOMeter – Average Transaction Time (rev 1)
Back with the Kingston SSDNow V Series 40GB review, I revised the layout of these graphs to better show SSD latency and access time. First, I have removed HDD results as they throw the scale too far to tell any meaningful difference in the SSD's you are trying to focus on. Second, I have reduced the queue depth scale down to 4. In practical terms of a running OS, queue depth is how many commands are 'stacked up' on the SSD at that time. An SSD is so fast at servicing requests that typical use will rarely see it increasing past 4. In the cases where it does, there is so much going on that you are more concerned with IOPS and throughput at that point than transaction time. The below charts are meant to show how nimble a given SSD is. Think of it as how well a car handles as opposed to how fast it can go.
Some notes for interpreting results:
- Times measured at QD=1 can serve as a more 'real' value of seek time.
- A 'flatter' line means that drive will scale better and ramp up its IOPS when hit with multiple requests simultaneously.
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 🙂