LA_TYPE |
Define your load-average support | port, edit sendmail/conf.h |
LA_ |
Does what |
---|---|
LA_ZERO |
Always returns 0. Essentially disables load average checking. This is portable to all systems. |
LA_INT |
Read /dev/kmem for the symbol avenrun. If found, interpret the result as a native (usually long) integer. |
LA_FLOAT |
Read /dev/kmem for the symbol avenrun. If found, interpret the result as a floating-point value. |
LA_SHORT |
Read /dev/kmem for the symbol avenrun. If found, interpret the result as a short integer. |
LA_SUBR |
Call the library routine getloadavg(3) and use the result returned. |
LA_MACH |
Call the MACH-specific processor_set_info(2) routine and use the result returned. |
LA_PROCSTR |
Read the Linux-specific /proc/loadavg file and interpret the result as a floating-point value. |
LA_READKSYM |
Use the (some SysV versions) ioctl of MIOC_READKSYM to read /dev/kmem. |
LA_DGUX |
DG/UX-specific support for using the dg_sys_info(2) function to read the load average. |
LA_HPUX |
HP-UX specific support for using the pstat_getdynamic(2) function to read the load average. |
LA_IRIX6 |
Irix 6.x-specific support that adapts to 32- or 64-bit kernels. This is, otherwise, similar to LA_INT. |
LA_KSTAT |
Solaris specific support for using the kstat(2) function to read the load average. |
LA_DEVSHORT |
Read a short from a system file and scale it in the same manner as LA_SHORT. The default file is /dev/table/avenrun. |
The LA_INT, LA_SHORT, LA_FLOAT, and LA_READKSYM settings require additional tuning. For these, three additional definitions are used, as shown in Table 3-6.
Compile-time macro |
Tunes |
---|---|
FSHIFT |
Number of bits to shift right when using LA_INT, LA_SHORT, and LA_READKSYM. Default is 8. |
_PATH_UNIX |
The pathname of your kernel. This is required for LA_INT and LA_SHORT. Default is /unix for SysV; /hp_ux for HP-UX V9; /stand/unix for HP-UX V10, News, and UXP/OS; /dev/ksyms for Solaris; /dynix for DYNIX; otherwise /vmunix. |
_PATH_KMEM |
The pathname of your kernel memory. This is required for LA_INT, LA_SHORT, LA_FLOAT, and LA_READKSYM. Default is /dev/kmem. |
LA_AVENRUN |
The name of the kernel variable that holds the load average. Used by LA_INT, LA_SHORT, and LA_FLOAT. Default is averun for SysV, otherwise _averun. |
NAMELISTMASK |
The mask to bitwise-AND against the return value of nlist(3). If this is undefined, the return value is used as is. A common value is 0x7fffffff to strip off the high bit. |
New ports should be reported to sendmail@sendmail.org so that they can be folded into future releases.