imac is at my vacation home is extremely slow even surfing the web and simple spread sheets.
OS10.11.6
Model Name: iMac
Model Identifier: iMac9,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.66 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 8 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM91.008D.B08
SMC Version (system): 1.37f3
Hardware UUID: D78E36F0-B190-5A18-B8B4-92B296A2A4A8
Could be any number of hardware or software problems on a computer that old.
Try resetting the SMC and NVRAM.
How to reset the System Management Controller (SMC) on your Mac - Apple Support
How to reset NVRAM on your Mac - Apple Support
Then startup in Safe Mode, followed by a normal startup.
Use safe mode to isolate issues with your Mac - Apple Support
In addition, run and post back with an EtreCheck report so that we can see more details about your Mac.
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my 2009 imac is slow
