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[Q] InsightIQ Metrics
Hello,
IHAC who wants to know about the difference of metrics below which are listed in insightIQ users guide.
https://support.emc.com/docu59977_InsightIQ-3.2-User-Guide.pdf#page=26
"Blocking File System Events Rate"
"Contended File System Events Rate"
"Locked File System Events Rate"
It'll be highly appreciated if anybody could technically explain how each event differ or can navigate to relevant documents or KB etc.
Thanks&Regards,
yu tezuka
sjones51
252 Posts
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October 24th, 2016 08:00
Hi tezuky,
I am not sure what version of InsightIQ you are using, but I did find an Isilon InsightIQ 3.1 Technical Note document that describes the following:
Blocking File System Events Rate
Displays the number of file blocking events occurring in the file system per second.
You can optionally break out this data by path or node
Contended File System Events Rate
Displays the number of file contention events, such as lock contention or read/write
contention, occurring in the file system per second. You can optionally break out this
data by path or node.
Locked File System Events Rate
Displays the number of file lock operations occurring in the file system per second.
You can optionally break out this data by path or node.
https://support.emc.com/docu57796
tezuky
24 Posts
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October 25th, 2016 05:00
Hi sjones, thanks a lot as always. It helps !!
tezuky
24 Posts
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October 26th, 2016 04:00
Hello,
Regarding the explanation in the document, these understanding are correct in a sense of general linux kernel terminology?
"lock contention events" means when a process tries but can't get the lock of a file since it's owned by other process.
"file blocking events" means when a process goes into sleep status waiting for the lock is released after failing to get the lock of a file.
Thanks in advance,
yu tezuka
sjones51
252 Posts
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October 26th, 2016 14:00
Hi tezuky,
To my knowledge, yes they are based on linux kernel terminology as OneFS has a FreeBSD base so it is similar in many aspects.