[Disksim-users] Why the overall average response time, almost 20000, is so big?

[Yinliang Yue]

There are so many I/O requests waiting in the queue. I do not know the
details of your storage systems, such as how many disks, how these disks
are organized. I suggest you check your storage configuration.

2012/8/13 leon hsu <liangxiongxu at gmail.com>

>
> Hi, everybody,
>
> I need you help:-)
>
> When I set the "I/O Trace Time Scale" in disksim_iosim to 1, the simulator
> shows a saturation error before.
> But when I change "I/O Trace Time Scale" in disksim_iosim to 10, the error
> disappeared.
>
> I think that is because the "request arrival time" of the trace file is
> too small, which results that the number of the arriving requests in one
> second is more than ones that the simulator could deal with in one second.
> So I change the "I/O Trace Time Scale" in disksim_iosim to 10.
>
> Next, I run it again, but the weired result made me crazy. When I ran
> disksim using my ascii trace file, the overall response time, almost 20000,
> is too big to believable.
>
> Do anybody could tell me the reason and how to solve this problem. Thank
> you so much. I am so appreciated.
>
>
> I set the "request arrival time" like the following style.
>
> 0.5
> 0.75
> 1
> 1.2000
> 1.4000
> 1.5000
> 1.7000
> 2.0
> .....
>
>
> Hopefully, it could give some hints to find out my problem. Thanks.
>
>
> Leon
>
>
>
>
>
>
>
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>
>


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