Starting hal daemon incredibly decrease my hard drive performance

[Kay Sievers]

On Mon, 2004-11-01 at 18:39 +0100, Alexis Muller wrote:
> On Mon, 2004-11-01 at 12:01 -0500, David Zeuthen wrote:
> [...]
> > Not sure, it doesn't happen for me and I haven't got any reports from
> > either Fedora or Ubuntu users about this so I'm not convinced hal is
> > causing this to happen. FWIW, we don't even poll these drives anymore as
> > hal as of 0.2.98 or something respects the /sys/block/hda/removable
> > file. 
> 
> I've just try with 0.2.98, i've the same problem.
> I've also try to compile hal with no optimization (CFLAGS="") but also
> the same :-(
> 
> I've done my tests with no other program or daemon running (except
> dbus).
> 
> The problem not happened with my external hard drive (firewire)
> 
> > If you find out what is causing this please let us know.
> 
> I don't know exactly who works hald... 
> Have you any idea what other tests can i do ? Older kernel ?

No idea. I can't believe as well that this is caused by hald.
Please look with:

  [root at pim ~]# lsof -p 29989
  COMMAND   PID USER   FD   TYPE     DEVICE    SIZE    NODE NAME
  hald    29989 root  cwd    DIR        3,2    4096       2 /
  hald    29989 root  rtd    DIR        3,2    4096       2 /
  hald    29989 root  txt    REG        3,2  211048 3149715 /usr/sbin/hald
  hald    29989 root  mem    REG        3,2  108332 3817500 /lib/ld-2.3.3.so
  ...

and:
  [root at pim ~]# strace -s 1000 -p 29989
  Process 29989 attached - interrupt to quit
  gettimeofday({1099332125, 636651}, NULL) = 0
  gettimeofday({1099332125, 636962}, NULL) = 0
  poll([{fd=6, events=POLLIN}, {fd=13, events=POLLIN|POLLPRI}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=8, events=POLLIN}], 5, 1329) = 0
  gettimeofday({1099332126, 968549}, NULL) = 0
  open("/dev/hdc", O_RDONLY|O_NONBLOCK|O_EXCL|O_LARGEFILE) = 3
  ioctl(3, CDROM_DRIVE_STATUS, 0x7fffffff) = 1
  close(3)                                = 0
  time(NULL)                              = 1099332127
  gettimeofday({1099332127, 27646}, NULL) = 0
  poll([{fd=6, events=POLLIN}, {fd=13, events=POLLIN|POLLPRI}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=8, events=POLLIN}], 5, 1940) = 0
  gettimeofday({1099332128, 972347}, NULL) = 0
  open("/dev/hdc", O_RDONLY|O_NONBLOCK|O_EXCL|O_LARGEFILE) = 3
  ioctl(3, CDROM_DRIVE_STATUS, 0x7fffffff) = 1
  close(3)                                = 0
  time(NULL)                              = 1099332129
  ...

if hald is doing something with your device.

Kay


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