Thanks Gisle and petrarca for confirming that. I thought this is because of my messed-up OS only. I linked this thread to the trac's ticket #33554 to for more info on that.
On 17.04.2020 21:27, Gisle Vanem wrote:
My problem is, and long time has been, the following. Every 30-40-60-120 minutes (it varies) I suddenly see CPU consumption jumps to 100% because of tor process, so I need to stop/start it to settle things down. Also, when I start Tor after a period of inactivity, say, a few hours or night, I cannot start it reliably for the first time, ever. It goes up to "Bootstrapped 95% (circuit_create): Establishing a Tor circuit" log message and... 100% CPU. After the second start, I get 100% CPU with 50/50 probability, and after the 3rd, it finally is OK, most of the time. Then, this 30-40-60-120 minutes cycle begins... It happens with this "Bootstrapped 95% ..." message or a bit before that.
I've seen the same and patched like this:
--- a/lib/thread/compat_winthreads.c 2020-01-24 21:59:07 +++ b/lib/thread/compat_winthreads.c 2020-04-09 08:55:04 @@ -170,6 +170,8 @@ do { DWORD res; res = WaitForSingleObject(cond->event, ms);
- SleepEx(1, TRUE); EnterCriticalSection(&cond->lock); if (cond->n_to_wake && cond->generation != generation_at_start) {
That always did the trick.
I reported it here: https://trac.torproject.org/projects/tor/ticket/33411
--gv