hIOmon SSD Performance Monitor - Understanding desktop usage patterns.

[Ao1]

are the QD going higher on the ssd simply because it is reading faster, and can handle it better?

This is what I am starting to suspect. Maybe high peak QD's are occuring because the SSD is dealing with requests so quickly. Maybe that is why the average QD stays around the same.

photoshop test:
max data transferred HDD; 283,496,448
max data transferred SSD; 778,919,936

but you ran the same test on them? why would it write 2.7 times more data to the SSD for the same size file?

for the modern warfare 2 the results are much the same...tremendously more amount written to the SSD with the exact same usage?

seems like all of the write comparisons across the board follow this same pattern here. your read numbers for amount transferred look very close though. are you sure that you cleared the test before you ran them again on ssd?

I picked this up as well. Maybe I just had Photoshop open longer and it auto saved when I was monitoring the SSD. For MW2 I loaded a level, played the level, let the next level load and then closed it. I did the same on HDD and SSD so I have no idea why writes were so much higher.

Later today I am going to install a game on both HDD and SSD. That way I will know for sure that I am writting the exact amount of data to both HDD and SSD.

The monitoring is recording per process, but it seems TRIM instructions are being sent out all the time by the OS and maybe that is part of the reason that SSD in general is seeing a lot more writes.

The clear conclusion for me at this stage is that the vast majority of IOP read/ writes are done in less than a ms with SSD, which is obviously why a SSD feels so snappy and I'm not sure if raid could improve that. What I don't know is if max MB/s speeds would increase in a raid set up.

Comp, can you run a game on a raid array and show the results as I have shown on the last couple of posts?

[Ao1]

Here is what happens when I install Bad Company 2. First I reset hIOmon, rebooted and then I installed the game.

It's not that straightforward as it generated multiple exe files.

[Ao1]

From The SSDPerfAnalysisFS Filter using HDD. This is a summary of the game install, patch update and general use whilst waiting for the patch to download and install.

Now to reset for the game load comparison.

[Ao1]

Here is what happens when I play Bad Company 2 for the first time. I waited for the intro to play out and then immediately proceeded to get myself killed. Waited for the reload and then closed the program. It looks like this game does small incremental loads. Maybe later on in the game the loads are more significant.