OS 10.9.5. running slow on iMac especially on Internet DSL

OS 10.9.5. running slow on iMac especially on Internet DSL - this is a recent occurrence. Have run TotalAV to check for malware and viruses; can find none.

A warm welcome to Mac-Forums.

Of course, we cannot really know what is causing your problem without knowing what additions, extensions, apps and the like you may have added/altered recently.

But what I can say with confidence is get rid of any AV software and any "cleaning your Mac" type software. There are no viruses in the wild for Macs; AV software not only slows your Mac, hogs the CPU, but can actually interrupt or block legitimate updates from Apple. It is pointless.

Malware is a different matter. Download Malwarebytes Anti-malware app for the Mac (free) and run it. Browser extensions such as Ghostery and Adblock Plus block tracking and Ads, respectively.

There is only one app we recommend regularly for "servicing" your Mac and that is the free OnyX - downloadable from: https://www.titanium-software.fr/en/onyx.html

Make sure you download the version specific to your Mac. (10.9.5). Install, select Automation, use the default settings as checked, and Execute.

Please post back if this helps, or otherwise.

Ian

You will need to provide a few details. What are the specifics of your iMac? What year? What CPU? How much memory? How much storage do you have and how much of it is free? What is the speed of your DSL connection? What is "slow" mean? Slow on loading sites, specific or all of them? Which browser?

Avoid all anti virus software since there aren't any for the Mac and these AV software are the problem more than not..

I don't know Ashwin why you simply do not replace the batteries in your crystal ball.

Nick and Sly never seem to do this either!

And Dude o fcourse you will not find anything. Why? As Ian says there are no Mac OS X viruses period. AV software is a knwn resource hog and capable of slowinfg down your Mac. Mavericks imho was not a particularly goodoperating system so consider upgrading to El Capitan or Sierra.