On Sun, Oct 31, 2010 at 06:44:43PM +0100, Matthias Schmidt wrote: > > I compiled a new version of Firefox from pkgsrc (3.6.11) and after some > time Firefox consumes 100% CPU even if only one empty tab is open. > > The machine runs > > DragonFly hades 2.9-DEVELOPMENT DragonFly v2.9.0.90.g20134-DEVELOPMENT > #0: Sun Oct 31 08:56:28 CET 2010 > matth...@hades:/usr/obj/usr/src/sys/T42 i386 > > and is a UP machine. > > Precisely the CPU is consumed by the xulrunner process. Truss revealed > the following repeating pattern: > > poll(0x2b332ab8,0x3,0xffffffff) = 209 (0xd1) [...]
faxgetty from the comms/hylafax package also takes 100% CPU without any reason It is also always repeating the same pattern [kdump -R output]: 0.000024 CALL gettimeofday(0x7ffffffff850,0) 0.000011 RET gettimeofday 0 0.000011 CALL gettimeofday(0x7ffffffff810,0) 0.000010 RET gettimeofday 0 0.000010 CALL select(0x4,0x7ffffffffa00,0x7ffffffff980,0x7ffffffff900,0x595c80) 0.000016 RET select 1 0.000022 CALL gettimeofday(0x7ffffffff810,0) 0.000011 RET gettimeofday 0 0.000010 CALL read(0x1,0x7ffffffff030,0x7ff) 0.000012 GIO fd 1 read 0 bytes "" 0.000009 RET read 0 A quick grep at the source told me select() should be waiting at least 1 or 2 seconds : struct timeval tv; tv.tv_sec = 2; tv.tv_usec = 0; But it returns immediately (only 16 microseconds from the call). System is an Atom (4 threads) running 2.8-RELEASE/x86_64 -- Francois Tigeot
