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FranzSchaefer
3 Posts
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2905
June 8th, 2017 04:00
issues with Dell EMC Unity REST API performance data
when i read performance data via the unity rest API there are 2 issues:
first: i can not find any values for the latency. it is nice to be able to see how loaded the box ist in terms of ops and throughput but
for serious business we would also need latency values. what would you suggest here?
second: in the sp.*.fibreChannel. branch there is sp.*.fibreChannel.target.*.. and sp.*.fibreChannel.inititaor.*.readBytes.
when i read the values bot the host and initiators are listed as seen below. i would have expected WWNs or similar. where are these "target" and "initiator" values defined this way?
'values' => {
'spb' => {
'FE2/MVS' => '974070873',
'FE7/SC' => '0',
'FE5/SC' => '249025',
'FE4/SC' => '244645',
'FE3/SC' => '970740425',
'FE6/SC' => '0'
},
'spa' => {
'FE2/MVS' => '1689378173',
'FE7/SC' => '193',
'FE5/SC' => '309765',
'FE4/SC' => '310109',
'FE3/SC' => '1650445293',
'FE6/SC' => '193'
}
},
'path' => 'sp.*.fibreChannel.target.*.readBytes',
'queryId' => 10
1821
0
Posted June 23rd, 2017 08:00
LUN's should have a response time value (its available in UEMCLI). Which specific object are you looking for response time? In some case, you'll need to perform a calculation to derive response time.
The ports on the Unity array can be either Back-end Ports (BE - the SAS ports to the disks) or Front-end Ports (FEx - the ports for connecting a host).
On the Unity DPE, there are two ethernet ports labeled 2 and 3 - these are the FE2 and FE3 ports. The CNA ports labeled 4 and 5 - these are the FE4 and FE5 ports.
If you have an IO Module installed, those ports are labeled 0 and 1 or 0-3 depending on the type of IO module you have. For a two port IO Module, those would be FE6 and FE7.
Some of this information in contained in the White Paper in the Hardware Component Description section.
docu69319_Unity-Hybrid-and-Unity-All-Flash-Hardware-Information-Guide.pdf
Below is a image of the DPE - I've labeled the ports (this was for iSCIS, so Eth2 would be FE2, etc)
glen
1821
0
Posted June 27th, 2017 01:00
so the latency values are availabe on the CLI but not in the REST API?
as for the ports: yes, it seems the sp.*.fibreChannel.inititator.*.readBytes lists the ports. but there
is a dedicated section in the API where one can read the traffic dedicated to ports anyways. e.g.:
sp.*.fibreChannel.fePort.*.readBlocks so it does not make much sense that it shows up under this section.
anyways: any chance the LUN latency values are readable on the rest API?
those are the metrics i could read for LUNs:
sp.*.storage.lun.*.busyTime
sp.*.storage.lun.*.currentIOCount
sp.*.storage.lun.*.idleTime
sp.*.storage.lun.*.readBlocks
sp.*.storage.lun.*.reads
sp.*.storage.lun.*.snap.*.readBlocks
sp.*.storage.lun.*.snap.*.readBytes
sp.*.storage.lun.*.snap.*.reads
sp.*.storage.lun.*.snap.*.writeBlocks
sp.*.storage.lun.*.snap.*.writeBytes
sp.*.storage.lun.*.snap.*.writes
sp.*.storage.lun.*.sumOutstandingRequests
sp.*.storage.lun.*.totalIoTime
sp.*.storage.lun.*.writeBlocks
sp.*.storage.lun.*.writes
sp.*.storage.pool.*.lun.*.dataSizeAllocated
sp.*.storage.pool.*.lun.*.dataWithOverheadSizeSubscribed
sp.*.storage.pool.*.lun.*.overheadSizeAllocated
sp.*.storage.pool.*.lun.*.overheadSizeSubscribed
sp.*.storage.pool.*.lun.*.sizeAllocated
sp.*.storage.pool.*.lun.*.sizeSubscribed
sp.*.storage.pool.*.lun.*.sizeTotal
sp.*.storage.pool.*.lun.*.snapshotSizeAllocated
sp.*.storage.pool.*.lun.*.snapshotSizeSubscribed
franz
1821
0
Posted June 27th, 2017 08:00
These are the metrics for LUN using UEMCLI
SP Storage LUN Metrics
416: Path = sp.*.storage.lun.*.avgReadSize
Description = Average read size on this LUN
417: Path = sp.*.storage.lun.*.avgWriteSize
Description = Average write size on this LUN
418: Path = sp.*.storage.lun.*.busyTime
Description = Busy time, in microseconds, spent processing I/O for this LUN
419: Path = sp.*.storage.lun.*.currentIOCount
Description = Number of I/O requests waiting to be completed on this LUN
420: Path = sp.*.storage.lun.*.idleTime
Description = Idle time, in microseconds, where there was not any I/O to process for this LUN
421: Path = sp.*.storage.lun.*.queueLength
Description = Average I/O queue length for this LUN
422: Path = sp.*.storage.lun.*.readBlocksRate
Description = Rate for raw metric: Blocks read from this LUN
423: Path = sp.*.storage.lun.*.readBytesRate
Description = Rate for raw metric: Number of bytes read from this LUN
424: Path = sp.*.storage.lun.*.readsRate
Description = Rate for raw metric: Reads from this LUN
425: Path = sp.*.storage.lun.*.responseTime
Description = Average response time, in microseconds, for requests to this LUN
426: Path = sp.*.storage.lun.*.sumOutstandingRequests
Description = Increases by the number of outstanding requests when an IO arrives to this LUN
427: Path = sp.*.storage.lun.*.totalBytesRate
Description = Rate for raw metric: Total number of bytes read and write requests on this Lun
428: Path = sp.*.storage.lun.*.totalCallsRate
Description = Rate for raw metric: Total number of read and write requests on this LUN
429: Path = sp.*.storage.lun.*.totalIoTime
Description = Product of difference in time since last change in outstanding IO and the number of outstanding IO during that time
430: Path = sp.*.storage.lun.*.writeBlocksRate
Description = Rate for raw metric: Blocks written to this LUN
431: Path = sp.*.storage.lun.*.writeBytesRate
Description = Rate for raw metric: Number of bytes written to this LUN
432: Path = sp.*.storage.lun.*.writesRate
Description = Rate for raw metric: Writes to this LUN
FranzSchaefer
3 Posts
1821
0
Posted June 23rd, 2017 03:00
is no one from emc reading this forum?
btw: from working with the API there is now an initial version of a grafana collector for unity:
https://github.com/svsteam/unity2grafana