Single IDE vs Dual IDE?

jrsimmons asks: "I'm running performance tests on IDE interface configurations for my company. I've discovered that disk to disk I/O is significantly faster (in the realm of 30%-40%) when only a single IDE interface is active versus when two IDE interfaces are active. This is significant as our servers are used to provide Point-of-Sale availability for registers in the retail environment, which is heavily dependent on disk i/o performance for efficiency. I have run the tests under both Windows and our retail OS (sorry, no Linux) with similar results. What are some possible explanations for the detrimental effect the second active ide controller has on disk I/O speed?" Has anyone measured this deficiency on Linux and other Unices?

Comments

Re:I found your problem

[mosch]

What the fuck world do you live in, where servers don't use 10K and 15K drives? Even shitty-ass $5,000 PC-based servers have 10K drives in them. Let alone the big guns, like the SunFires, and the Sun E-series boxes.

I'm trying not to be rude, but what the fuck kind of "servers" are you talking about? Have you even ever seen a data center, the kind with the raised, non-static floors, uninterruptible power, redundant heating/air conditioning and (in a small one) a couple hundred servers?

What are you, fifteen fucking years old, and dumb enough to think you know everything?