10-09-2006
Hi there,
I have been investigating the differences between a V880 and V890 as we currently have a V880 and want to get a DR box of similar spec.
As far as I can see the main difference is the fact the V890 can use the UltraSparc IV+ processors. This is a good thing as the IV+'s are multicored processors (as far as I can tell) which allow for a higher performance for a given number of processors over the V880.
Again from what I can tell the backplane is the same.
The only reason why I would push for a V890 is the potential for the awesome dualcore processors and having a much more powerful platform. Given that Solaris 10 is all pushing zones and containers this may be beneficial.
Hope that helped - it is just my thoughts - and again I am not an expert on SUN (although I would like to be one day!!).
Si
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LEARN ABOUT OPENDARWIN
get_nprocs_conf
GET_NPROCS(3) Linux Programmer's Manual GET_NPROCS(3)
NAME
get_nprocs, get_nprocs_conf - get number of processors
SYNOPSIS
#include <sys/sysinfo.h>
int get_nprocs(void);
int get_nprocs_conf(void);
DESCRIPTION
The function get_nprocs_conf() returns the number of processors configured by the operating system.
The function get_nprocs() returns the number of processors currently available in the system. This may be less than the number returned by
get_nprocs_conf() because processors may be offline (e.g., on hotpluggable systems).
RETURN VALUE
As given in DESCRIPTION.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+------------------+---------------+---------+
|Interface | Attribute | Value |
+------------------+---------------+---------+
|get_nprocs(), | Thread safety | MT-Safe |
|get_nprocs_conf() | | |
+------------------+---------------+---------+
CONFORMING TO
These functions are GNU extensions.
NOTES
The current implementation of these functions is rather expensive, since they open and parse files in the /sys filesystem each time they
are called.
The following sysconf(3) calls make use of the functions documented on this page to return the same information.
np = sysconf(_SC_NPROCESSORS_CONF); /* processors configured */
np = sysconf(_SC_NPROCESSORS_ONLN); /* processors available */
EXAMPLE
The following example shows how get_nprocs() and get_nprocs_conf() can be used.
#include <stdlib.h>
#include <stdio.h>
#include <sys/sysinfo.h>
int
main(int argc, char *argv[])
{
printf("This system has %d processors configured and "
"%d processors available.
",
get_nprocs_conf(), get_nprocs());
exit(EXIT_SUCCESS);
}
SEE ALSO
nproc(1)
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU
2017-09-15 GET_NPROCS(3)