High CPU and Kernel_Task Usage.

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ksec
Posts: 13
Joined: Tue May 29, 2007 2:46 pm

High CPU and Kernel_Task Usage.

Post by ksec » Sat Feb 22, 2020 11:10 pm

On my 2015 MacBook Pro with 2.9 GHz Dual-Core Intel Core i5, running on latest Transmission 2.94

Transmission was on ~10% CPU usage, which isn't low but acceptable. But causes Kernel_Task to be constantly at 25% to 35% usage. Stopping All transfer immediately drops down to normal 5-10% range. No Memory Pressure so this shouldn't be an memory issue.

Was downloading from WiFi, Destination being my NAS. So this is full Wireless Downloading and Uploading at the same time. Speed was around 3-5 MB/s. I have Gigabit Fibre so 5MB/s isn't exactly fast.

ksec
Posts: 13
Joined: Tue May 29, 2007 2:46 pm

Re: High CPU and Kernel_Task Usage.

Post by ksec » Sun Apr 19, 2020 8:03 am

Having Same issues again. In current slow speed 300KB/s everything is ok, Once it goes up to MB/s or a few MB/s things start heating up.

ksec
Posts: 13
Joined: Tue May 29, 2007 2:46 pm

Re: High CPU and Kernel_Task Usage.

Post by ksec » Sun May 24, 2020 6:29 pm

I think the issues is definitely less of a problem on Transmission 3.0 Just tested it out, Transmission CPU usage is lower even at 3 - 6 MB/s. but Kernel_Task is still fairly high at 30-40%.

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