Hi Andrey, Looks like the tooltip is wrong and should be fixed. Your interpretation of FreeListImpl.fillFactor() is correct - the former value is used space, the latter one is total allocated. So, your pages are 99% full.
On Sun, Nov 5, 2017 at 4:08 AM, Andrey Kornev <[email protected]> wrote: > Oops! Hit "Send" a bit too soon. > > On the other hand, FreeListImpl.fillFactor() (used by the MBean under the > hood to compute the PageFillFactor value) returns a tuple where loadSize > == 409825856 and totalSize == 413892608. If my interpretation of these > values is correct, shouldn't PageFillFactor be described as "the percentage > of used space", or in other words, how full the pages are? > > Or, is it something else? > > Thanks > Andrey > ------------------------------ > *From:* Andrey Kornev <[email protected]> > *Sent:* Saturday, November 4, 2017 5:55 PM > *To:* [email protected] > *Subject:* Data region's pages fill factor > > Hello, > > I'm a bit confused about the meaning of PagesFillFactor MBean attribute. > According to the documentation (as well as a tooltip in the JMX MBean > Browser -- here's a snapshot https://snag.gy/57FVw8.jpg), the attribute > indicates "the percentage of space that is still free and can be filled > in". I'm consistently getting 0.99... Does it mean that my pages are 99% > empty? > > > -- Best regards, Ilya
