[icecast-dev] icecast-1.3.12 on SunOS

[Titus v. d. Malsburg]

Thomas,

unfortunately it does slow down the machine.  I am working in a chroot 
enviroment and there are other users on the same box.  Therefore it's of 
special importance that I don't consume the cpu by myself.

  Titus

Am Sonntag den, 15. September 2002, um 23:37, schrieb Thomas Vander 
Stichele:
> Apart from what probably is a bad assumption in the code, does it 
> actually
> present a problem ? Meaning, even though it indicates 100% cpu usage, 
> does
> it slow down your machine ? Maybe it's just spinning idly.  See what
> happens when other cpu eaters run.  If icecast plays nicely, it's 
> probably
> not a big deal.
...
>>> I compiled icecast-1.3.12 on a box with uname -a: SunOS star19 5.6
>>> Generic_105181-31 sun4u sparc SUNW,UltraSPARC-IIi-cEngine.  The result
>>> works properly.  The problem is that the icecast process generates 
>>> 100%
>>> cpu load even if no sources and no clients are connected.
>>>
>>> If I trace the process using truss, I get the following:
>>>
>>> ...
>>> open("/dev/zero", O_RDWR)                       = 1
>>> mmap(0x00000000, 16384, PROT_READ|PROT_WRITE|PROT_EXEC,
>>> MAP_PRIVATE|MAP_NORESERV
>>> E, 1, 0) = 0xEEBE0000
>>> close(1)                                        = 0
>>> mprotect(0xEEBE0000, 8192, PROT_NONE)           = 0
>>> lwp_create(0xEF40FAF0, 0x00C0, 0xEEBE3E04)      = 6
>>> lwp_continue(6)                                 = 0
>>> lwp_create(0x00000001, 0x4000, 0xEF40FC8C)      = 0
>>> lwp_schedctl(SC_STATE|SC_BLOCK, -1, 0xEEBE3D0C) = 0
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> ...
>>> many times
>>> ...
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> poll(0xEFFFD750, 1, 30)                         = 0
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> time()                                          = 1031909555
>>> ...
>>> time()                                          = 1031909556
>>> poll(0xEF4ABA88, 0, 500)                        = 0
>>> time()                                          = 1031909556
>>> recvfrom(2, 0xEF4AFBA0, 8191, 0, 0x00063F38, 0xEF4ADB9C) Err#11 EAGAIN
>>> time()                                          = 1031909556
>>> lwp_sema_post(0xEF4B1E78)                       = 0
>>> lwp_sema_wait(0xEF4B1E78)                       = 0
>>> lwp_mutex_unlock(0xEF56B280)                    = 0
>>> lwp_mutex_lock(0xEF56B280)                      = 0
>>> time()                                          = 1031909556
>>> time()                                          = 1031909556
>>> time()                                          = 1031909556
>>> time()                                          = 1031909556
>>> lwp_sema_post(0xEF4B1E78)                       = 0
>>> lwp_sema_wait(0xEF4B1E78)                       = 0
>>> lwp_mutex_unlock(0xEF56B280)                    = 0
>>> lwp_mutex_lock(0xEF56B280)                      = 0
>>> time()                                          = 1031909556

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