/proc/meminfo

[Dan Am <sendmail@lonx.net>]

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Hello,
running rhas2.1 with 2.4.18-e.31smp  (stock-redhat) on a rx2600. I noticed 
that the figures from /proc/meminfo and thus top seem to add somewhat 
different to i386:
"Shared" and "buffers" and "free" add up  to only 1.6 GB with 2GB available   
In i386 all three add up to the total available. 
I include two listings. Does that make sense and if so how ? I did search this 
lists archive for hints on "top" and "meminfo" . 

Tia & regards 

Dan 

[-- Attachment #2: meminfoi386 --]
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        total:    used:    free:  shared: buffers:  cached:
Mem:  1057861632 678666240 379195392        0 198885376 366485504
Swap: 789618688        0 789618688
MemTotal:      1033068 kB
MemFree:        370308 kB
MemShared:           0 kB
Buffers:        194224 kB
Cached:         357896 kB
SwapCached:          0 kB
Active:         191296 kB
Inactive:       381736 kB
HighTotal:      130992 kB
HighFree:         2044 kB
LowTotal:       902076 kB
LowFree:        368264 kB
SwapTotal:      771112 kB
SwapFree:       771112 kB
BigFree:             0 kB
        total:    used:    free:  shared: buffers:  cached:
Mem:  1057861632 678674432 379187200        0 198893568 366485504
Swap: 789618688        0 789618688
MemTotal:      1033068 kB
MemFree:        370300 kB
MemShared:           0 kB
Buffers:        194232 kB
Cached:         357896 kB
SwapCached:          0 kB
Active:         191320 kB
Inactive:       381720 kB
HighTotal:      130992 kB
HighFree:         2044 kB
LowTotal:       902076 kB
LowFree:        368256 kB
SwapTotal:      771112 kB
SwapFree:       771112 kB
BigFree:             0 kB

[-- Attachment #3: meminfoia64 --]
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        total:    used:    free:  shared: buffers:  cached:
Mem:  2092859392 2026700800 66158592        0 49397760 1532116992
Swap: 2147450880        0 2147450880
MemTotal:      2043808 kB
MemFree:         64608 kB
MemShared:           0 kB
Buffers:         48240 kB
Cached:        1496208 kB
SwapCached:          0 kB
Active:         975584 kB
Inact_dirty:    749392 kB
Inact_clean:     36448 kB
Inact_target:   352272 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2043808 kB
LowFree:         64608 kB
SwapTotal:     2097120 kB
SwapFree:      2097120 kB
Committed_AS: 49680752 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:    262144 kB