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RDS memory

Dear,

I see there are some alerting options for RDS, but freeable memory is not one of them, making it impossible to monitor memory usage. Why is it not there, as this metric is available in Cloudwatch Metrics? Can it be added?

Thanks!
Tom
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Hi Tom,

Thanks for raising the request for "freeable memory". 

Guess the attribute was introduced , post our implementation .

We will take it up right away and update you on this asap. 

Regards,

Ananthkumar K S
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Hi Tom,

We are almost done with the update and we will get you an update on the attribute "freeable memory" in few days time.

Along with this , we have planned to support replica lag, bin log disk usage and swap usage too.

Kindly let us know if you require any other attribute along with this, in any of our AWS based services. We would do the needful.

Hope you are aware of our integrated offering for EC2 and Server. We are working on a lot of stuffs based on this integration. So , kindly stay updated with respect to this.

Regards,

Ananthkumar K S
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by Tom
Hi guys,

You are doing just great. The new updates are very helpful. Right now I don't see any real lacking attributes, but I will let you know if we come across something.

Thanks,
Tom
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Hi Tom,

We have added "freeable memory" as per your requirement.

Kindly check and let us know if it works as per your requirement .

Regards,

Ananthkumar K S
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by Tom
Thanks for the quick follow up! I now have this option: rdsinstance.freeablememory.exceeds

I have two questions :)

1. Shouldn't this be drops below instead of exceeds?
2. Would it be possible to make it percentage based so it could be configured the same for all RDS instances with different memory sizes?

Thanks again!
Tom
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Hi Tom,

Shouldn't this be drops below instead of exceeds?
I am surprised that you see a different key from what I see(PFA). It should be "Freeable memory threshold". We follow this terminology and hence preferred the following text.


 Would it be possible to make it percentage based so it could be configured the same for all RDS instances with different memory sizes?
In general, a freeable memory requirements may vary for different memory sizes are 10% availability for 8GB(~200 MB) memory is not as same as 10% availability for 32GB(~3.2 GB). 3.2 GB is a manageable amount of memory in case of RDS . So , we preferred bytes. Are you sure that you will be requiring this? We will look into this if required.

Regards,

Ananthkumar K S
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by Tom
Ha, this is weird, I now see the same as you do! Maybe it was a caching thing :)

Requiring is a bit strong, but it would be nice to have. It would be in line with SERVER thresholds like memory and swap memory. They are also percentage based.
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