Frans Grotepass> Frans Grotepass wrote:
> > Hi, Firstus postus We use Net-SNMP for system health inspection. We
> > noticed that our 64 bit apps did not report their pr_size variable from
> > the psinfo struct correctly. Some info on the web shows that checking
> > with a 32 bit application give incorrect values for 64 bit applications.
> > What is the method to get correct values for these variables?
>
> OK, reading my previous post, I realise there is some missing info...
>
> This variable in psinfo translates to the hrSWRunPerfMem variable. This
> variable returns correct
> values for 32bit applications but goes to 0 for 64bit apps on Solaris 10.
>
> A 32bit compiled test C program using code similar to that in
> agent/mibgroup/host/hr_swrun.c also
> validates this behaviour. If this same application is compiled as 64bit,
> it gives correct return
> values of the 64 bit apps.
>
> I couldn't find any information on the net-snmp to explain this
> behaviour. Should I file a bug or
> must net-snmp be built as a 64 bit binary to solve this problem?
>
> We could build a work around using the pr_pctmem in the solaris psinfo
> struct, but I can not find a
> matching value in the mibs. It could be that it is not available via
> net_snmp This value
> translates to the used memory in a 15 bit fraction.
>
> Hope this clarifies my first message a little
>
Bump...
I received no response on this question... I dove into the code and added the
following patch. This results in suitable behaviour with a 32 bit build
accessing the data from 64 bit applications. The patch was done on v5.4.2 and
tested on Solaris 10. Hopefully this could be added to the main branch.
>>>>>PATCH START
--- hr_swrun_old.c 2008-12-05 09:49:08.760274490 +0100
+++ hr_swrun.c 2008-12-05 13:36:59.631522030 +0100
@@ -84,6 +84,11 @@
#include <net-snmp/agent/auto_nlist.h>
#include "kernel.h"
#ifdef solaris2
+#if _SLASH_PROC_METHOD_ && defined _ILP32
+#include <net-snmp/agent/cache_handler.h>
+#include <net-snmp/agent/hardware/memory.h>
+#endif
+
#include "kernel_sunos5.h"
#endif
#if defined(aix4) || defined(aix5) || defined(aix6)
@@ -1151,7 +1156,30 @@
long_return = (lowpsinfo.pr_rssize * MMU_PAGESIZE) / 1024;
#elif defined(solaris2)
#if _SLASH_PROC_METHOD_
+#ifdef _ILP32
+ if(0 == proc_buf->pr_rssize)
+ { /* Odds on that we are looking with a 32 bit app at a 64 bit
psinfo.*/
+ netsnmp_memory_info *mem;
+ mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
+ if (!mem)
+ {
+ long_return = 0;/* Tried my best, giving up.*/
+ }
+ else
+ {/* 0x8000 is the maximum range of pr_pctmem. devision of 1024 is
to go from B to kB*/
+ uint32_t pct_unit = (mem->size/0x8000) * (mem->units/1024);
+ long_return = proc_buf ? proc_buf->pr_pctmem * pct_unit : 0;
+ }
+ }
+ else
+ {
+ long_return = proc_buf ? proc_buf->pr_rssize : 0;
+
+ }
+#else /*_LP64*/
long_return = proc_buf ? proc_buf->pr_rssize : 0;
+#endif /*_LP64*/
+
#else
long_return = proc_buf->p_swrss;
#endif
>>>>>PATCH END
Best regards,
Frans Grotepass
>
>
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