Re: Apache + mod_php performance

On 10/7/2024 12:47 PM, Mark Berryman wrote:

It is most definitely possible as that is precisely what the auxiliary
server in TCPIP Services does.  It listens for a connection, then
creates a process to handle it.  See the description of TCPIP$C_AUXS in
the TCPIP Services programming documentation.

>
SYS$COMMON:[SYSHLP.EXAMPLES.TCPIP]TCPIP$TCP_SERVER_SOCK_AUXS.C has:
>
    /*
     * create socket
     */
>
    if ( (sockfd = socket(TCPIP$C_AUXS, SOCK_STREAM, 0)) < 0 )
   {
   perror( "Failed to create socket" );
   exit( EXIT_FAILURE );
   }
>
but the equivalent
SYS$COMMON:[SYSHLP.EXAMPLES.TCPIP]TCPIP$TCP_SERVER_QIO_AUXS.C
gives some hints about what it is doing:
>
    struct sockchar conn_sockchar;  /* connect socket char buffer     */
...
    $DESCRIPTOR( inet_device,    /* string descriptor with logical   */
       "SYS$NET:"    ); /* name of internet pseudodevice    */
...
    /*
     * init connection socket characteristics buffer
     */
>
    conn_sockchar.prot = TCPIP$C_TCP;
    conn_sockchar.type = TCPIP$C_STREAM;
    conn_sockchar.af   = TCPIP$C_AUXS;
...
    /*
     * assign device socket
     */
>
    status = sys$assign( &inet_device,     /* device name      */
          &conn_channel,     /* i/o channel       */
          0,          /* access mode          */
          0        /* not used             */
             );
>
    if ( !(status & STS$M_SUCCESS) )
   {
   printf( "Failed to assign i/o channel to TCPIP device\n" );
   exit( status );
   }
...
    /*
     * create connection socket
     */
>
    status = sys$qiow( EFN$C_ENF,           /* event flag
    */
                       conn_channel,        /* i/o channel
    */
                       IO$_SETMODE,         /* i/o function code
    */
                       &iosb,               /* i/o status block
    */
                       0,                   /* ast service routine
    */
                       0,                   /* ast parameter
    */
                       &conn_sockchar,      /* p1 - socket char buffer
    */
                       0,                   /* p2
    */
                       0,                   /* p3
    */
                       0,                   /* p4
    */
                       0,                   /* p5
    */
                       0                    /* p6
    */
                     );
>
    if ( status & STS$M_SUCCESS )
        status = iosb.status;
>
    if ( !(status & STS$M_SUCCESS) )
        {
        printf( "Failed to create socket\n" );
        exit( status );
        }
>
But it is not clear (at least not to me) whether:
- the original TCP/IP device was made shareable and SYS$NET just points
to it
or:
- the original TCP/IP device is connected to a new pseudodevice that
  SYS$NET points to
>
The first seems by far the simplest, but the comment indicate
the second.