Re: FICON channel utilization

2012-03-08 Thread Ron Hawkins
Radoslaw I agree that you wouldn't do this in production, but it is a perfectly valid way to measure the throughput of a host channel. Besides fanning out through an 8Gb switch to multiple FICON blades or storage controllers, I would also suggest that you make sure the other port on the 8S chann

Re: FICON channel utilization

2012-03-07 Thread R.S.
W dniu 2012-03-07 16:52, Martin Packer pisze: Perhaps one would expect HMC and RMF to source from the same place. Tell me if I'm wrong, this not being my area. 1. I added an emoticon to my answer - that's becuase both sources showed 100%, although I really used HMC Activity Monitor. 2. HMC and

Re: FICON channel utilization

2012-03-07 Thread Martin Packer
Perhaps one would expect HMC and RMF to source from the same place. Tell me if I'm wrong, this not being my area. Cheers, Martin Martin Packer, Mainframe Performance Consultant, zChampion Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Fa

Re: FICON channel utilization

2012-03-07 Thread Ron Hawkins
IBM-MAIN@bama.ua.edu > Subject: Re: [IBM-MAIN] FICON channel utilization > > W dniu 2012-03-07 12:49, Ron Hawkins pisze: > > Radoslaw, > > > > Actually RMF does not report channel utilization for FICON. It is > > showing you microprocessor busy on the host channe

Re: FICON channel utilization

2012-03-07 Thread R.S.
W dniu 2012-03-07 12:49, Ron Hawkins pisze: Radoslaw, Actually RMF does not report channel utilization for FICON. It is showing you microprocessor busy on the host channel board. Did I say RMF? :-) I observed the utilisation on HMC. However AFAIK RMF showed similar data. For the same MB/sec

Re: FICON channel utilization

2012-03-07 Thread Jan Vanbrabant
Cathy's techpaper: IBM zEnterprise 196 and IBM zEnterprise 114 I/O and FICON Express8S Channel Performance (Cathy Cronin, Version 2, November 2011) (ZSW03196USEN01) http://public.dhe.ibm.com/common/ssi/ecm/en/zsw03196usen/ZSW03196USEN.PDF On Wed, Mar 7, 2012 at 12:49 PM, Ron Hawkins wrote:

Re: FICON channel utilization

2012-03-07 Thread Ron Hawkins
Radoslaw, Actually RMF does not report channel utilization for FICON. It is showing you microprocessor busy on the host channel board. For the same MB/sec this metric will change depending on block size, data length and whether zHPF is used. You can quite easily saturate a host channel MP with