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This way the frequency is read from sysfs only once per update cycle instead of every time the UI is redrawn. This also changes the code to read from /proc/cpuinfo instead. This is because reading from scaling_cur_freq stalls for 10ms if the previous read for the file was more than one second ago. [1] Since htop's update cycle is longer than that, it would cause the read of each CPU's scaling_cur_freq file to block the UI for 20ms. This easily led to a noticeable half-second lag on a 20+ CPU machine. /proc/cpuinfo also has a 10ms delay, but this applies for the whole file so the delay does not scale with the number of CPUs. [2] [1]: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4815d3c56d1e10449a44089a47544d9ba84fad0d [2]: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=7d5905dc14a87805a59f3c5bf70173aac2bb18f8 |
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| .. | ||
| Battery.c | ||
| Battery.h | ||
| IOPriority.c | ||
| IOPriority.h | ||
| IOPriorityPanel.c | ||
| IOPriorityPanel.h | ||
| LinuxCRT.c | ||
| LinuxCRT.h | ||
| LinuxProcess.c | ||
| LinuxProcess.h | ||
| LinuxProcessList.c | ||
| LinuxProcessList.h | ||
| Platform.c | ||
| Platform.h | ||