[Disksim-users] Re: Disksim-users Digest, Vol 38, Issue 1

[Cagdas Dirik]

Hi Wu,

That is very likely due to your requests piling up on the queue subcomponent (which has a hard limit of 10K requests in queue). How fast your requests are arriving (what is the request interarrival rate in your trace)? And how long do you think it will take your disk to service a request?

Cagdas

---- Original message ----
>Date: Thu,  6 Nov 2008 12:00:19 -0500 (EST)
>From: disksim-users-request at ece.cmu.edu  
>Subject: Disksim-users Digest, Vol 38, Issue 1  
>To: disksim-users at ece.cmu.edu
>
>Send Disksim-users mailing list submissions to
>	disksim-users at ece.cmu.edu
>
>To subscribe or unsubscribe via the World Wide Web, visit
>	https://sos.ece.cmu.edu/mailman/listinfo/disksim-users
>or, via email, send a message with subject or body 'help' to
>	disksim-users-request at ece.cmu.edu
>
>You can reach the person managing the list at
>	disksim-users-owner at ece.cmu.edu
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of Disksim-users digest..."
>
>
>Today's Topics:
>
>   1. why most of requests hadn't executed? (lucky.wu.han)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Thu, 6 Nov 2008 21:56:26 +0800
>From: "lucky.wu.han" <lucky.wu.han at gmail.com>
>Subject: [Disksim-users] why most of requests hadn't executed?
>To: "disksim-users" <disksim-users at ece.cmu.edu>
>Message-ID: <200811062156171569963 at gmail.com>
>Content-Type: text/plain; charset="gb2312"
>
>Hello all
>   
>I use disksim to simulate the  storage subsystem. The trace is websearch1.spc which had been changed to ascii format. The number of io request is 100000+.
>But when i run disksim(./disksim disk.parv output ascii WebSearch1.ascii 0), it stop abnormally. The error out is:
>    "Stopping simulation because of saturation: simtime 73.129074,totalreqs 10008"
>I don't know why. Most of requests hadn't executed.
>Who can tell me the reason ?
>thank you for your help! 
>Have a nice day!
>    
>
>2008-11-06 
>
>
>
>lucky.wu.han 
>-------------- next part --------------
>An HTML attachment was scrubbed...
>URL: http://sos.ece.cmu.edu/pipermail/disksim-users/attachments/20081106/495d9075/attachment-0001.html
>
>------------------------------
>
>_______________________________________________
>Disksim-users mailing list
>Disksim-users at ece.cmu.edu
>https://sos.ece.cmu.edu/mailman/listinfo/disksim-users
>
>
>End of Disksim-users Digest, Vol 38, Issue 1
>********************************************