We have a customer with an A300 (70 x 7.6TB SSD) who is seeing high latency on specific workloads and in general high CPU load (90-95%)
We have noticed that the "Storage efficiency mode" has been set to "Efficient" which may explain the running "sis" tasks?
How much of a "deal" is this to the CPU? And how much can it effect the performance of the system in general?
Seems to me that it has quite a negative effect... In a service windows we will try to pause all the SIS tasks to see if the CPU load is lowered by this, and if the performance is improveing.
Can you just set the setting back to "Default", and stop the SIS processes manually, or is there a procedure to this? I guess it might have a negative effect on space savings also...
#Temperature-sensitive storage efficiency and performance impact?
twilit yacht
twilit yacht
OK, we found that several volumes have this sis option set "storage-efficiency-mode" to "efficient" which as far as I can read, causes sis to try to make everything more efficient by using a better compression etc.. now, this has been running for some time now.. question is, if we can just disable it... or will it still need to use more CPU to unpack the data in the future? Would we be better of with a "lun move" to another volume?
toxic lotus
Hello, I was told that you cannot revert a volume from efficient to the default mode... You can from default to efficient. 😅
And I think a volume move will keep this setting, but i'm not sure of that.
I guess you will need to create new volumes in default mode and migrate datas manually on them 🙄