Thanks Eric. No one who is a ZIMon developer has jumped up to contradict this, so I’ll go with it :-)
Many thanks. This is helpful to understand where the data is coming from and would be a welcome addition to the documentation. Cheers, Kristy > On Feb 15, 2018, at 9:08 AM, Eric Agar <[email protected]> wrote: > > Kristy, > > I experimented a bit with this some months ago and looked at the ZIMon source > code. I came to the conclusion that ZIMon is reporting values obtained from > the IB counters (actually, delta values adjusted for time) and that yes, for > port_xmit_data and port_rcv_data, one would need to multiply the values by 4 > to make sense of them. > > To obtain a port_xmit_data value, the ZIMon sensor first looks for > /sys/class/infiniband/<ibdev>/ports/<port>/counters_ext/port_xmit_data_64, > and if that is not found then looks for > /sys/class/infiniband/<ibdev>/ports/<port>/counters/port_xmit_data. Similarly > for other counters/metrics. > > Full disclosure: I am not an IB expert nor a ZIMon developer. > > I hope this helps. > > > Eric M. Agar > [email protected] > > > <graycol.gif>Kristy Kallback-Rose ---02/14/2018 08:47:59 PM---Hi, Can one of > the IBMers tell me if port_xmit_data and port_rcv_data from Zimon can be > interpreted > > From: Kristy Kallback-Rose <[email protected]> > To: gpfsug main discussion list <[email protected]> > Date: 02/14/2018 08:47 PM > Subject: [gpfsug-discuss] RDMA data from Zimon > Sent by: [email protected] > > > > > Hi, > > Can one of the IBMers tell me if port_xmit_data and port_rcv_data from Zimon > can be interpreted as RDMA Bytes/sec? Ideally, also how this data is being > collected? I’m looking here: > https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.0/com.ibm.spectrum.scale.v5r00.doc/bl1hlp_monnetworksmetrics.htm > > <https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.0/com.ibm.spectrum.scale.v5r00.doc/bl1hlp_monnetworksmetrics.htm> > > But then I also look here: https://community.mellanox.com/docs/DOC-2751 > <https://urldefense.proofpoint.com/v2/url?u=https-3A__community.mellanox.com_docs_DOC-2D2751&d=DwMFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=zIRb70L9sx_FvvC9IcWVKLOSOOFnx-hIGfjw0kUN7bw&s=ataLzjZMTIJfHxa5qXIwQdCTq09CQveIxYNnxJQ5pgs&e=> > > and see "Total number of data octets, divided by 4 (lanes), received on all > VLs. This is 64 bit counter.” So I wasn’t sure if some multiplication by 4 > was in order. > > Please advise. > > Cheers, > Kristy_______________________________________________ > gpfsug-discuss mailing list > gpfsug-discuss at spectrumscale.org > https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=zIRb70L9sx_FvvC9IcWVKLOSOOFnx-hIGfjw0kUN7bw&s=D1g4YTG5WeUiHI3rCPr_kkPxbG9V9E-18UGXBeCvfB8&e= > > <https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=zIRb70L9sx_FvvC9IcWVKLOSOOFnx-hIGfjw0kUN7bw&s=D1g4YTG5WeUiHI3rCPr_kkPxbG9V9E-18UGXBeCvfB8&e=> > > > > _______________________________________________ > gpfsug-discuss mailing list > gpfsug-discuss at spectrumscale.org > http://gpfsug.org/mailman/listinfo/gpfsug-discuss
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