> This free memory can go away in less than a second
It's depends of many things. But you need to pay attention on this variables
https://mariadb.com/kb/en/library/mariadb-memory-allocation/
In my db servers i use nagios to monitor when "free" and "available" ram is
less than 80% warning state and less than 5% critical.
> so I figured why not use as much as possible --- just not too much, and
this is borderline.
You can use the rule always 80% used for safe. But 20% of 46GB could be too
much ram wasted.
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<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
2017-11-08 9:56 GMT-02:00 hw <hw@xxxxxxxx>:
> marcos valentine wrote:
>
>> Disk cache is not recommended for databases servers.
>>
>> it'll slow down the performance. More ram equals more performance.
>>
>> This link help me understand memory usage on linux.
>>
>> https://www.linuxatemyram.com/
>>
>> Basically you need yo worry about
>>
>> free memory is close to 0
>> used memory is close to total
>>
>
> Almost 3GB available on a 48GB machine is very close to "free memory is
> 0" and "used memory is close to total", which is why I´m wondering what
> I can get away with :)
>
> This free memory can go away in less than a second. Maybe it never will,
> so I figured why not use as much as possible --- just not too much, and
> this is borderline.
>
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