12-31-2019
Hi Neo,
my 2 cents:
You maybe did so but if not, knowing the type of process it involves, I would have chosen as you did a calm period for the task, and to not waste proc time due to the different caches, try to optimize what I can/ where I can e.g. not sure you can change the cache ration of the FS or underlying storage ( I suppose that is more the provider's duty...) but you have access to your RDBMS kernel I would reduce its cache working storage to force the reading of the true data) this is efficient for big batch processes when you know you are after data not often read ( so no chance of finding them in caches), of course, it impacts ordinary online interactive work but as you have fewer requests thrown by online users its acceptable... it should improve a bit your step 4...
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