- Macbook pro activity monitor spikes when on bqattery power update#
- Macbook pro activity monitor spikes when on bqattery power mac#
That could be done with for example a ping running in the background permanently. The only work around is simply to actually use the radio for something which will prevent it from going into the connected-sleep mode at all. Unfortunately there seem to be no official interface from Apple to change power saving modes manually, or to disable certain power saving modes. Other power saving modes exist that save more power, but for example the connected-sleep mode introduces an extra latency of typically 300 ms, which is more than you measure here. In this mode it introduces a small latency of less than 100 ms (typically 50-100 ms) for the first packet received after the module was put in the connected-idle mode. This you're probably experiencing is known as the "connected-idle" mode. The PSM (power saving mode) of the WiFi chipset takes many forms. This is common across WiFi chipsets on all platforms and operating systems, and is actually part of the WiFi standard itself. Yes, there is indeed such a power saving measure implemented on the Mac. But the calculated response time from the access point's point-of-view is relatively high at 71 ms, while the MBP saw < 1 ms between the request and the response. You can see the sequence number is the same. The left was captured using tcpdump on the Ubiquiti UniFi access point that my MBP is connected to, and the right was captured on the MBP.
Macbook pro activity monitor spikes when on bqattery power update#
Update 3: Here are two simultaneous packet captures with the "same" ICMP packet highlighted.
Given this, my best guess is there is some kind of power saving mechanism turning off the radio.
(while the above is running) ~> ping 192.168.1.242 -i 2ģ8 packets transmitted, 38 received, 0% packet loss, time 147ms If I rapidly send pings out, the inbound variance disappears! ~> ping 192.168.1.3 -i 0.2Ĥ17 packets transmitted, 417 packets received, 0.0% packet loss Update 2: Wireshark on the MBP shows ICMP "Response Time" as consistently ping 192.168.1.242 -i 2Ģ2 packets transmitted, 22 received, 0% packet loss, time 78ms There are a couple other anomalies present, but it's clear the high latency has been occurring for a while. Here is the last 7 days, where the orange is my MacBook. I have been constantly ingesting ping data into InfluxDB using Telegraf. I have run this test many times and for long durations. Update: Shown below is the minimal example. Location services are disabled, and I'm not clicking on the wifi icon during the test. With wifi logging enabled, nothing is logged in /var/log/wifi.log during the ping test. I've seen it on multiple access points across different vendors and channels.
Macbook pro activity monitor spikes when on bqattery power mac#
I feel strongly that this is the Mac and not the networking hardware. It seems to be causing stuttering with Steam In-Home Streaming. If you have a Mac notebook computer, you see additional information related to its battery.I'm seeing intermittent latency spikes when on wifi, but only when pinging my MBP from another machine and not when pinging from the MBP to another machine. The bottom of the window shows information about your overall energy use. Preventing Sleep: Whether this app is preventing your Mac from going to sleep. This column only appears on Mac computers with one or more graphics cards. Graphics Card: Whether the app requires a high-performance graphics card. This column only appears on Mac notebook computers.Īpp Nap: Whether App Nap is active for this app. The energy use of individual apps and their processes is displayed in the upper part of the Activity Monitor window.Įnergy Impact: A relative measure of the current energy consumption of the app (lower is better).ġ2hr Power: The average energy impact of the app in the last 12 hours, or since the Mac computer started (lower is better). To display more columns, choose View > Columns, then choose the columns you want to show. In the Activity Monitor app on your Mac, click Energy (or use the Touch Bar).
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