So, what is WindowServer on a Mac? And why does its CPU usage occasionally skyrocket? Let’s try to figure out. It’s worth mentioning that the WindowServer related bug is often observed alongside unproportioned CPU consumption by the following processes: nsurlsessiond, mdnsresponder, mds_stores, hidd, trustd, photoanalysisd, gamecontrollerd and syslogd. This bug doesn’t appear to survive Mac reboots, but this measure has a short-time effect and the issue eventually re-emerges. In many cases, this drag co-occurs with abnormally high memory consumption. Many users who run into such a situation and open the Activity Monitor to do some reconnaissance discover that a process named WindowServer is constantly using up most of the CPU resources. But what if the performance of a brand-new or recently released MacBook, iMac, Mac Pro is running slower than usual? This condition requires some insight into the whys. If the machine’s hardware is upgradeable, one decent workaround is to install more RAM and replace the standard “spinning” storage media with a faster SSD drive. Slowdown issues are a natural upshot of a Mac starting to age and lacking the resources to support increasingly resource-intensive applications. Use the tool to remove the infection if found. Scan your Mac with Combo Cleaner to detect all files related to the malware. Serious Mac performance hit, kernel panics, random reboots Uses a lot of CPU and RAM, causes Mac slowdown, Activity Monitor alertsįake Adobe Flash Player update popups, malware-riddled bundles, drive-by downloads Nsurlsessiond, mdnsresponder, mds_stores, hidd, trustd, syslogd, kernel_task, gamecontrollerd, photoanalysisd Mac adware, potentially unwanted application (PUA)

Windows server process monitor