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System Cache and FAST Cache utilization in Unity?
I'm trying to monitor the System Cache and FAST Cache utilization %age on one of our Unity arrays, but I can't find that metric anywhere.
I've looked in the Unity performance charts, adding my own counters. Also looked in CloudIQ and the uemcli performance objects.
The cache metrics I see are in terms of IOs which doesn't tell me what I want. In the VNXs it's easy to see how much the cache is being used and if it's doing Forced Flushes or getting close the the High Watermark and all that, but it doesn't seem to be so easy in Unity.
Do these counters exists and have not been added to Unity yet or I'm I doing something wrong? Thanks in advance!
DELL_ChrisHolloway
2 Intern
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125 Posts
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Posted February 16th, 2018 03:00
There's a few metrics from UEMCLI that looks like they might meet your needs, for example:
11:33:30 service@unknown spb:~> uemcli -d 127.0.0.1 -u admin -p password /metrics/metric -path sp.*.memory.summary.utilization show -detail
Storage system address: 127.0.0.1
Storage system port: 443
HTTPS connection
1: Path = sp.*.memory.summary.utilization
Description = SP Memory Utilization
Type = fact
Unit = %
Availability = real-time
There's a few more under SP memory:
351: Path = sp.*.memory.bufferCache.freeBufferBytes
352: Path = sp.*.memory.bufferCache.highWatermarkHitsRate
353: Path = sp.*.memory.bufferCache.hitRatio
354: Path = sp.*.memory.bufferCache.hitsRate
355: Path = sp.*.memory.bufferCache.lookupsRate
356: Path = sp.*.memory.bufferCache.lowWatermarkHitsRate
357: Path = sp.*.memory.bufferCache.watermarkHitsRate
358: Path = sp.*.memory.pageSize
359: Path = sp.*.memory.summary.buffersBytes
360: Path = sp.*.memory.summary.cachedBytes
361: Path = sp.*.memory.summary.freeBytes
362: Path = sp.*.memory.summary.swapFreeBytes
363: Path = sp.*.memory.summary.swapTotalUsedBytes
364: Path = sp.*.memory.summary.totalBytes
365: Path = sp.*.memory.summary.totalUsedBytes
366: Path = sp.*.memory.summary.utilization
Do any of those meet your needs?