3 ms·

how did you get a 6500T to idle so low? Is that CPU power or total system power? I have a T part from the next generation, I don't remember the exact model. It'

how did you get a 6500T to idle so low? Is that CPU power or total system power? I have a T part from the next generation, I don't remember the exact model. It's low but it isn't that low.

ndriscoll 1y ago
The processors themselves all seem to be pretty efficient at idle (there's apparently no real reason to get a T processor. It just caps performance). It mostly depends on everything else. The only place I know of to get this kind of info is this thread[0] where people have been building this spreadsheet[1]. Some threads on servethehome.com also report when some pcie cards have broken power management which can destroy idle efficiency. [0] https://www.hardwareluxx.de/community/threads/die-sparsamsten-systeme-30w-idle.1007101/ https://www.hardwareluxx.de/community/threads/die-sparsamste... [1] https://docs.google.com/spreadsheets/u/0/d/1LHvT2fRp7I6Hf18LcSzsNnjp10VI-odvwZpQZKv_NCI/htmlview https://docs.google.com/spreadsheets/u/0/d/1LHvT2fRp7I6Hf18L...
PhilipRoman 1y ago
Total system power (as in, drawn from the outlet) I didn't do any significant customizations, it runs Alpine Linux. Here is my powertop output: Summary: 139.6 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 0.9% CPU use Usage Events/s Category Description 100.0% Device Audio codec hwC0D0: Realtek 480.6 µs/s 38.3 Timer tick_nohz_handler 469.0 µs/s 24.6 Timer hrtimer_wakeup 330.0 µs/s 23.2 Process [PID 2121] [irq/132-iwlwifi] 281.2 µs/s 10.1 Process [PID 3278] containerd --config /var/run/docker/containerd/containerd.toml 28.9 µs/s 9.5 kWork toggle_allocation_gate 52.4 µs/s 7.5 Timer inactive_task_timer 279.3 µs/s 4.6 Process [PID 3279] containerd --config /var/run/docker/containerd/containerd.toml 363.9 µs/s 4.5 Process [PID 3306] containerd --config /var/run/docker/containerd/containerd.toml The system as a whole spends around 95-97% of time in pc8 state.
- daymanstep 1y ago
  Which main board are you using? 5W is very impressive. I'd be surprised if it was even possible to achieve with an ATX board without some serious tuning.
  - sidewndr46 1y ago
    I'm curious to know the details of this as well. 5 watts is absurdly low for an ATX system. I've definitely seen 25 watts before. Assuming you went from a 75% efficient PSU to a 90% efficient one, that'd shave off a few more watts but it won't get you that low. For perspective, I think the typical NIC consumes several watts of power.
  - PhilipRoman 1y ago
    It's a Lenovo 310B motherboard.
    - sidewndr46 1y ago
      Wait, so we're talking about a laptop?
      - PhilipRoman 1y ago
        No, it's a mini PC.

how did you get a 6500T to idle so low? Is that CPU power or total system power? I have a T part from the next generation, I don't remember the exact model. It's low but it isn't that low.

ndriscoll 1y ago

The processors themselves all seem to be pretty efficient at idle (there's apparently no real reason to get a T processor. It just caps performance). It mostly depends on everything else. The only place I know of to get this kind of info is this thread[0] where people have been building this spreadsheet[1]. Some threads on servethehome.com also report when some pcie cards have broken power management which can destroy idle efficiency. [0] https://www.hardwareluxx.de/community/threads/die-sparsamsten-systeme-30w-idle.1007101/ https://www.hardwareluxx.de/community/threads/die-sparsamste... [1] https://docs.google.com/spreadsheets/u/0/d/1LHvT2fRp7I6Hf18LcSzsNnjp10VI-odvwZpQZKv_NCI/htmlview https://docs.google.com/spreadsheets/u/0/d/1LHvT2fRp7I6Hf18L...

PhilipRoman 1y ago

Total system power (as in, drawn from the outlet) I didn't do any significant customizations, it runs Alpine Linux. Here is my powertop output: Summary: 139.6 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 0.9% CPU use Usage Events/s Category Description 100.0% Device Audio codec hwC0D0: Realtek 480.6 µs/s 38.3 Timer tick_nohz_handler 469.0 µs/s 24.6 Timer hrtimer_wakeup 330.0 µs/s 23.2 Process [PID 2121] [irq/132-iwlwifi] 281.2 µs/s 10.1 Process [PID 3278] containerd --config /var/run/docker/containerd/containerd.toml 28.9 µs/s 9.5 kWork toggle_allocation_gate 52.4 µs/s 7.5 Timer inactive_task_timer 279.3 µs/s 4.6 Process [PID 3279] containerd --config /var/run/docker/containerd/containerd.toml 363.9 µs/s 4.5 Process [PID 3306] containerd --config /var/run/docker/containerd/containerd.toml The system as a whole spends around 95-97% of time in pc8 state.

daymanstep 1y ago
Which main board are you using? 5W is very impressive. I'd be surprised if it was even possible to achieve with an ATX board without some serious tuning.
- sidewndr46 1y ago
  I'm curious to know the details of this as well. 5 watts is absurdly low for an ATX system. I've definitely seen 25 watts before. Assuming you went from a 75% efficient PSU to a 90% efficient one, that'd shave off a few more watts but it won't get you that low. For perspective, I think the typical NIC consumes several watts of power.
- PhilipRoman 1y ago
  It's a Lenovo 310B motherboard.
  - sidewndr46 1y ago
    Wait, so we're talking about a laptop?
    - PhilipRoman 1y ago
      No, it's a mini PC.