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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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catman
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nstats.z
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nstats
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Text File
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1998-10-20
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7KB
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199 lines
nnnnssssttttaaaattttssss((((1111)))) nnnnssssttttaaaattttssss((((1111))))
NNNNAAAAMMMMEEEE
nnnnssssttttaaaattttssss - NUMA Memory Management Statistics
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
nstats [_n_o_d_e-_p_a_t_h] [----hhhhaaaavvvv] [----rrrr _c_o_m_m_a_n_d]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Display the absolute NUMA Memory Management statistics, or display the
relative NUMA Memory Management statistics after running a command.
OOOOPPPPTTTTIIIIOOOONNNNSSSS
----hhhh Print a small summary of usage.
----aaaa Print absolute statistics for all nodes in the system.
----rrrr Run the command specified by _c_o_m_m_a_n_d and display the relative
statistics at the end of the command. Nstats samples the absolute
statistics before running the command and after running the command.
When the command exits, nstats displays the difference between the
two samples.
OOOOUUUUTTTTPPPPUUUUTTTT
MMMMiiiiggggrrrraaaattttiiiioooonnnn TTTThhhhrrrreeeesssshhhhoooolllldddd
Current migration threshold for this node expressed as a percentage
of the maximum threshold supported by the memory reference counters.
This maximum threshold is shown by the sn(1) command, and it can be
set by the system administrator to be either 2047 or 524287. Only
machines with PREMIUMM directory memory support the higher value of
524287. The migration threshold determines how aggressively the
system is trying to migrate memory to the nodes that are issuing
most memory accesses to a page of memory. Migration is requested
when the difference between the number of local accesses and the
number of remote accesses exceeds the number defined by the
mmmmiiiiggggrrrraaaattttiiiioooonnnn tttthhhhrrrreeeesssshhhhoooolllldddd.
CCCCoooouuuunnnntttteeeerrrr IIIInnnntttteeeerrrrrrrruuuuppppttttssss
This is the number of interrupts generated by the memory reference
counters, including interrupts for migration and interrupts for
updating the extended memory reference counters (refcnt(5)).
AAAAuuuuttttoooo MMMMiiiiggggrrrraaaattttiiiioooonnnnssss TTTToooo NNNNooooddddeeee
Number of pages automatically migrated to a node.
AAAAuuuuttttoooo MMMMiiiiggggrrrraaaattttiiiioooonnnnssss FFFFrrrroooommmm NNNNooooddddeeee
Number of pages automatically migrated out of a node.
PPPPaaaaggggeeee 1111
nnnnssssttttaaaattttssss((((1111)))) nnnnssssttttaaaattttssss((((1111))))
AAAAuuuuttttoooo MMMMiiiiggggrrrraaaattttiiiioooonnnn SSSSkkkkiiiippppssss
Rejected automatic migration requests due to a page being frozen or
not in a migratable state.
UUUUsssseeeerrrr MMMMiiiiggggrrrraaaattttiiiioooonnnnssss TTTToooo NNNNooooddddeeee
Number of pages migrated to a node due to an explicit user migration
request.
UUUUsssseeeerrrr MMMMiiiiggggrrrraaaattttiiiioooonnnnssss FFFFrrrroooommmm NNNNooooddddeeee
Number of pages migrated out of a node due to an explicit user
migration request.
UUUUsssseeeerrrr MMMMiiiiggggrrrraaaattttiiiioooonnnn SSSSkkkkiiiippppssss
Rejected user migration requests due to a page being frozen or not
in a migratable state.
CCCCooooaaaallllDDDD MMMMiiiiggggrrrraaaattttiiiioooonnnnssss TTTToooo NNNNooooddddeeee
Number of pages migrated to a node due large page coalescing.
CCCCooooaaaallllDDDD MMMMiiiiggggrrrraaaattttiiiioooonnnnssss FFFFrrrroooommmm NNNNooooddddeeee
Number of pages migrated from a node due to large page coalescing.
CCCCooooaaaallllDDDD MMMMiiiiggggrrrraaaattttiiiioooonnnn SSSSkkkkiiiippppssss
Rejected large page coalescing migration requests due to a page
being frozen or not in a migratable state.
FFFFrrrroooozzzzeeeennnn PPPPaaaaggggeeeessss IIIInnnn NNNNooooddddeeee
Pages frozen due to excessive migration.
MMMMeeeelllltttteeeedddd PPPPaaaaggggeeeessss IIIInnnn NNNNooooddddeeee
Pages melted (unfrozen) after having been frozen for a period of
time.
EEEEXXXXAAAAMMMMPPPPLLLLEEEE
To display the NUMA statistics for all nodes
$ nstats -a
To run a command and display NUMA statistics at the end
$ nstats -r ls -l
PPPPaaaaggggeeee 2222
nnnnssssttttaaaattttssss((((1111)))) nnnnssssttttaaaattttssss((((1111))))
RESTRICTIONS
All statistics are global.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
nnnnuuuummmmaaaa(5), rrrreeeeffffccccnnnntttt(5), ggggrrrr____ssssnnnn(1), ssssnnnn(1), ggggrrrr____nnnnssssttttaaaattttssss(1).
PPPPaaaaggggeeee 3333