Date: Wed, 12 Apr 2023 20:13:51 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 270785] Performance and power efficiency regression due to pthread_cond_timedwait() changes Message-ID: <bug-270785-227-h6LIx3ojut@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-270785-227@https.bugs.freebsd.org/bugzilla/> References: <bug-270785-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270785 --- Comment #2 from bllcha013@myuct.ac.za --- (In reply to Alexander Motin from comment #1) I ran truss for about 5 seconds against two java processes, one running Uni= Fi Controller and another running Minecraft server. UniFi 13.1-RELEASE: syscall seconds calls errors thr_set_name 0.001021075 2 0 kevent 13.369956893 13 0 fstatat 0.001887292 5 5 getrusage 0.003297147 14 0 _umtx_op 51.382037072 210 111 ------------- ------- ------- 64.758199479 244 116 UniFi 13.2-RELEASE: syscall seconds calls errors __sysctlbyname 0.000062617 3 0 write 0.000054957 1 0 fstatat 0.000652984 6 6 getrusage 0.001700589 21 0 thr_set_name 0.000423376 4 0 kevent 24.622512777 24 0 _umtx_op 55.068817041 262 194 ------------- ------- ------- 79.694224341 321 200 Minecraft 13.1-RELEASE: syscall seconds calls errors getrusage 0.012089758 74 0 sched_yield 0.088819070 726 0 _umtx_op 22.515308049 838 838 ------------- ------- ------- 22.616216877 1638 838 Minecraft 13.2-RELEASE: syscall seconds calls errors getrusage 0.002642594 106 0 sched_yield 0.750417219 37623 0 _umtx_op 28.945530935 37797 37797 ------------- ------- ------- 29.698590748 75526 37797 A few lines from Minecraft on 13.1-RELEASE: _umtx_op(0x801066458,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x7fffdd2ac688) ERR= #60 'Operation timed out' sched_yield() =3D 0 (0x0) _umtx_op(0x8010661d0,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x7fffdecebd68) ERR= #60 'Operation timed out' _umtx_op(0x801066458,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x7fffdd2ac688) ERR= #60 'Operation timed out' sched_yield() =3D 0 (0x0) _umtx_op(0x801066458,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x7fffdd2ac688) ERR= #60 'Operation timed out' sched_yield() =3D 0 (0x0) A few lines from Minecraft on 13.2-RELEASE: _umtx_op(0x18defb81b470,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x18e0d4980728) ERR#60 'Operation timed out' sched_yield() =3D 0 (0x0) _umtx_op(0x18defb81b470,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x18e0d4980728) ERR#60 'Operation timed out' sched_yield() =3D 0 (0x0) _umtx_op(0x18defb81b470,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x18e0d4980728) ERR#60 'Operation timed out' sched_yield() =3D 0 (0x0) _umtx_op(0x18defb81b470,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x18,0x18e0d4980728) ERR#60 'Operation timed out' sched_yield() =3D 0 (0x0) This is my first time using truss, or doing any sort of "debugging" so I'm = not very familiar, if I didn't do something right please tell me and I'll try d= o it again properly. I hope this helps with understanding. --=20 You are receiving this mail because: You are the assignee for the bug.=
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