[Disksim-users] Response Time for each request.

[Ted Wobber]

Bhushan -

Assuming that you are happy with a statistical summary of requests, the SSD add-on computes the request latency in aggregate and also gives information about the distribution of reads and writes.

It also gives similar numbers for each simulated flash chip.

If you need more detailed output, you can always hack the code.  The SSD request completion handler is in ssd.c:  ssd_request_complete.  There are also chip (element) access completion routines in that module.

Best regards,

Ted Wobber
MSR Silicon Valley


From: disksim-users-bounces at ece.cmu.edu [mailto:disksim-users-bounces at ece.cmu.edu] On Behalf Of Bhushan
Sent: Tuesday, January 06, 2009 11:16 AM
To: disksim-users
Subject: [Disksim-users] Response Time for each request.

Hi,
I am using the SSD Add-on for Disksim analyzing the performance of different traces. Is there a way to determine the response time for each request(read/write) in the trace? While debugging through the code, I found the "ioqueue_remove_completed_request" function call in disksim-ioqueue.c, while updates the "outtimestats" variable with the response time but the problem is this function gets called multiple times for each request.
I need this functionality to understand how the SSD responds for different requests.

Any help would be greatly appreciated.
--
Regards,
Bhushan.
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