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Oct 23, 2012, 08:58 AM
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Android adventures


So a quad core CPU grapher was a great need. There are many single CPU meters, but no-one could manage to recreate the ages old windows task manager, in existence for all time.

It wasn't hard to write a CPU grapher. This revealed the recent app list does indeed kill apps & apps can indeed run at full speed in the background. Every app that wants to run in the background needs to create a static object that all the activities reference. The activities come & go, but the static object always exists until it's slid off the recent apps.

This is something X Plane misses, hence its 5 minute install operation has to be done in the foreground. Background execution allows the CPU grapher to profile another app. X Plane uses 100% on 1 CPU.

It's hard to believe a quad 500Mhz Xeon that fit in a cabinet was once coveted. Now the tablet has a quad 1.4Ghz ARM. It just runs slower than a 166Mhz Cyrix because it's Java.

Being a JIT, there was hope all the image processing could be done in Java. This doesn't seem likely. Once anything is done natively, there's no point in using Java anywhere.
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