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dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Wed Jul 24, 2013 3:25 am    Post subject: Chargeback
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Howdy,

We are subjected to a chargeback system and i've been asked to make some sense of this. . .

My current confusion is the difference in a few of the costs:

$0.065 per printed laser page - seems high to me. What does everyone else use for laser printing cost?

DASD i/o is $0.014 per 1k excp's
"TAPE" i/o is $0.226 per 1k excp’s
V-Tape is charged as physical tape. Should it be?

CPU
I'm used to online cpu being a bit more expensive than batch and sometimes a shift differential. What we have is DB2 cpu charged at 4x+ the batch prime time rate and almost 3x the CICS rate. Whenever DB2 is used, it is at the same inflated rate.

Is this is what is charged on your systems?

Thanks,

d
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vasanthz

Global Moderator


Joined: 28 Aug 2007
Posts: 1522
Location: Chennai

PostPosted: Wed Jul 24, 2013 1:23 pm    Post subject:
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Hello D,
Quote:
DASD i/o is $0.014 per 1k excp's
"TAPE" i/o is $0.226 per 1k excp’s

few years back I was writing chargeback programs for a infrastructure service provider, providing services for 40+ clients. Apart from software licensing costs the other chargeback were for CPU hours, DASD GB and Tape GB, never heard of charges for DASD i/o or Tape i/o.
Maybe its the way the ISP operates.
Quote:
V-Tape is charged as physical tape. Should it be?

Vtape was charged same as real tapes.
Quote:
I'm used to online cpu being a bit more expensive than batch and sometimes a shift differential. What we have is DB2 cpu charged at 4x+ the batch prime time rate and almost 3x the CICS rate. Whenever DB2 is used, it is at the same inflated rate.

this too sounds unique, our policy was to bill the CPU hours utilization to the client, irrespective of the workload. The accountable CPU hours(type 30 SMF) was segregated between Client utilization and ISP utilization and then billed to the client. Public holidays and weekends were charged at lower rates.

Looks like there is big diversity in the contracts and options, which service providers offer to clients.

Regards,
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vasanthz

Global Moderator


Joined: 28 Aug 2007
Posts: 1522
Location: Chennai

PostPosted: Wed Jul 24, 2013 3:37 pm    Post subject:
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Quote:
DB2 cpu charged at 4x+ the batch prime time rate and almost 3x the CICS rate. Whenever DB2 is used, it is at the same inflated rate.

Hello D,
I am sure zIIP specialty engine utilization costs half(even lesser) than Central Processor usage.

If you have zIIP,
DB2 workloads would be eligible for zIIP, which means less chargeback cost of DB2 workloads than other workloads. Still unable to understand why DB2 is 3 or 4 times charged more at your place.
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Pete Wilson

Active User


Joined: 31 Dec 2009
Posts: 445
Location: London

PostPosted: Wed Jul 24, 2013 6:14 pm    Post subject:
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Maybe DB2 has a much higher dispatching priority or WLM so gets a premium rate. I/O's and CPU usage are not necessarily all the same if you're in a queue waiting for it
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