Hints:
  FreeBSD:
    If you want use POSIX semaphores you must include P1003_1B_SEMAPHORES option
    in kernel and make changes below in /boot/loader.conf
    increase maximum available semaphores
    p1003_1b.sem_nsems_max=60
    allow semaphores removing
    kern.ipc.shm_allow_removed=1
    If POSIX semaphores not compiled in kernel then using SystemV semaphores
    maximum number of semaphores sets
    kern.ipc.semmni=50
    maximum number of semaphores per set
    kern.ipc.semmsl=60
    maximum number of semaphores should be kern.ipc.semmni * kern.ipc.semmsl
    kern.ipc.semmns=3000
    async IO kernel module must be loaded or you get `Bad system call` message.
    add line aio_load="YES" to /boot/loader.conf
    and if you get message add line debug.mpsafenet=0
    Or if you want, you may compile module in kernel.

  Windows:
    At this time /RTC1 or /RTCsu option must be set under
    Microsoft Visual C++ Studio for 'Release' configurations.
    Follow these steps to enable the IP_TOS option for the Winsock setsockopt
    function and the -v option for the ping utility on Windows 2000, Windows XP,
    or Windows Server 2003:
      1. Start Registry Editor (Regedt32.exe).
      2. Go to the following key: 
         HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TcpIp\Parameters
      3. If you are running Windows 2000, follow these steps:
           a. On the Edit menu, click Add Value.
           b. In the Value name box, type DisableUserTOSSetting. 
           c. In the Data Type list, click REG_DWORD, and then click OK.
           d. In the Data box, type a value of 0 (zero), and then click OK.
         If you are running Windows XP or Windows Server 2003, follow these steps:
           a. On the Edit menu, point to New, and then click DWORD Value. 
           b. Type DisableUserTOSSetting as the entry name, and then press ENTER.
         When you add this entry, the value is set to 0 (zero). Do not change the value.
       4. Quit Registry Editor, and then restart the computer.
    See original of this instruction on http://support.microsoft.com/kb/248611

