Is There Something Wrong With The IOMeter ?

[Turab]

Hello friends,

I got an Corsair Neutron GTX 240GB, and currently testing it.

ATTO, Crystal Disk Mark, AS-SSD and Anvil scores are okay. But something wrong with the IOMeter 2010

Lets tell my test bench first:

i7 4770K
Asus Z87 Gryphon
2x 4GB Corsair DDR 1600
Main Storage ( Which OS is installed )
InWin 650W Bronze


All the power saving modes are closed. OS ise switched to maximum performance. CPU Power Management is set to: %100 - %100


And the IOMeter:

Maximum Disk Size: 2048000

Starting Disk Sector: 1024

Outstanding IO: 32

Write IO Data Pettern: Repeating Bytes


Access Specification:

4KB - %100 Random - %100 Read

Reply Size: 4KB

Align On: 4KB

Run Time: 3 Minutes



The problem is, I see in HardwareInfo they have reached 94K IOPS. But mine stucks on 53K only.


And when I switch the test to my main drive ( Seagate 600 - 480GB ), the same test reaches 85K

I have triggered the TRIM on Corsair's Toolbox. Also run a Secure Erase.

But nothing changes..


Am I doing something wrong :'( ?


Waiting for you advices,

Best regards.

 

[ashetos]

I suppose you do direct device access and don't use a file-system on the SSD.

I'm not sure what 2048000 stands for, is it like 2 gigabytes, 8 gigabytes, 1 gigabyte?

So the problem I see is, that 53K IOPS times 4K times 3x60 seconds is something like 36 Gigabytes of working set size. That means Iometer is writing 36 Gigabytes of data in a (8?) gigabyte address space? This might be stressful for the SSD.

I would suggest you used the full range of the device to get the maximum performance achievable.

 

[Cerb]

If the other scores are fine, the SSD is probably fine, too. If you're using MSAHCI, that could definitely be a culprit for lower Iometer performance, as Intel is known to tune their drives for it.