GUI for RHEL5 on low memory system

Operating Systems Linux Red Hat GUI for RHEL5 on low memory system

10-23-2013

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I bet someone has managed to hack a solution for hardware accelerated remote X.

I was amazed when I discovered mplayer ASCII video support; I have no idea why anyone would even bother implementing such functionality but it is there.

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cpc_event

cpc_event(3CPC) 				    CPU Performance Counters Library Functions					   cpc_event(3CPC)

NAME

       cpc_event - data structure to describe CPU performance counters

SYNOPSIS

       #include <libcpc.h>

DESCRIPTION

       The libcpc interfaces manipulate CPU performance counters using the cpc_event_t data structure. This structure contains several fields that
       are common to all processors, and some that are processor-dependent. These structures can be declared by a consumer of the  API,  thus  the
       size  and  offsets  of  the  fields  and  the  entire data structure are fixed per processor for any particular version of the library. See
       cpc_version(3CPC) for details of library versioning.

   SPARC
       For UltraSPARC, the structure contains the following members:

	 typedef struct {
		 int ce_cpuver;
		 hrtime_t ce_hrt;
		 uint64_t ce_tick;
		 uint64_t ce_pic[2];
		 uint64_t ce_pcr;
	 } cpc_event_t;

   x86
       For Pentium, the structure contains the following members:

	 typedef struct {
		 int ce_cpuver;
		 hrtime_t ce_hrt;
		 uint64_t ce_tsc;
		 uint64_t ce_pic[2];
		 uint32_t ce_pes[2];
	 #define ce_cesr ce_pes[0]
	 } cpc_event_t;

       The APIs are used to manipulate the highly processor-dependent control registers (the ce_pcr, ce_cesr, and ce_pes fields);  the	programmer
       is  strongly  advised not to reference those fields directly in portable code. The ce_pic array elements contain 64-bit accumulated counter
       values.	The hardware registers are virtualized to 64-bit quantities even though the underlying hardware only supports 32-bits (UltraSPARC)
       or 40-bits (Pentium) before overflow.

       The  ce_hrt field is a high resolution timestamp taken at the time the counters were sampled by the kernel.  This uses the same timebase as
       gethrtime(3C).

       On SPARC V9 machines, the number of cycles spent running on the processor is computed from samples of the processor-dependent  %tick regis-
       ter,  and placed in the	ce_tick field. On Pentium processors, the processor-dependent time-stamp counter register is similarly sampled and
       placed in the ce_tsc field.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gethrtime(3C), cpc(3CPC), cpc_version(3CPC), libcpc(3LIB), attributes(5)

SunOS 5.11							    12 May 2003 						   cpc_event(3CPC)

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