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--- aix [2018/09/11 15:38]
ss_wiki_admin
+++ aix [2019/09/16 16:09] (current)
@@ Line 14: / Line 14: @@
 </code>
+<code bash>
+ proctree 8196
+ ps -fk | grep wait
+vmstat -v
+              5505024 memory pages
+              5331905 lruable pages
+free pages
+memory pools
+              1302902 pinned pages
+.0 maxpin percentage
+.0 minperm percentage
+.0 maxperm percentage
+.0 numperm percentage
+file pages
+.0 compressed percentage
+compressed pages
+.0 numclient percentage
+.0 maxclient percentage
+client pages
+remote pageouts scheduled
+pending disk I/Os blocked with no pbuf
+paging space I/Os blocked with no psbuf
+filesystem I/Os blocked with no fsbuf
+client filesystem I/Os blocked with no fsbuf
+              2882029 external pager filesystem I/Os blocked with no fsbuf
+.3 percentage of memory used for computational pages
+[srvbd1]root]/]>vmstat -tw 1
+System configuration: lcpu=4 mem=7952MB
+ kthr          memory                         page                       faults           cpu       time
+------- --------------------- ------------------------------------ ------------------ ----------- --------
+  r   b        avm        fre    re    pi    po    fr     sr    cy    in     sy    cs us sy id wa hr mi se
+   0     702600    1052811     0     0     0     0      0     0     2   6268  7339  0  1 99  0 11:52:31
+   0     702602    1052809     0     0     0     0      0     0     4   5902  7045  0  1 99  0 11:52:32
+   0     702602    1052809     0     0     0     0      0     0     5   5991  6883  0  1 99  0 11:52:33
+   0     702602    1052809     0     0     0     0      0     0     4   5913  6100  0  1 99  0 11:52:34
+  [srvbd1]root]/]>svmon -G
+               size      inuse       free        pin    virtual
+memory      2035712     982932    1052780     384894     702631
+pg space    2097152       2404
+               work       pers       clnt      other
+pin          314839          0          0      70055
+in use       702631        240     280061
+PageSize   PoolSize      inuse       pgsp        pin    virtual
+s   4 KB          -     935236       2404     361214     654935
+m  64 KB          -       2981          0       1480       2981
+[srvbd1]root]/]>lscfg
+INSTALLED RESOURCE LIST
+</code>
+==== Monitoring ====
+nmon
+mpstat
+sar
+== Processor Binding ==
+<code bash>
+bindprocessor -q
+The available processors are:  0 1
+bindprocessor 14662 1
+ps -emo THREAD | grep p1
+#unbind
+bindprocessor -u 14662
+</code>
+== SMT (Simultaneous Multithreading) ==
+You can enable or disable SMT by running the smtctl command.\\
+<code bash>
+smtctl [ -m off | on [ -w boot | now]]
+The following options are available:
+-m off
+    Sets SMT mode to disabled.
+-m on
+    Sets SMT mode to enabled.
+-w boot
+    Makes the SMT mode change effective on next and subsequent restarts if you run the bosboot command before the next system restart.
+-w now
+    Makes the SMT mode change immediately but the change does not persist across restart.
+</code>
+If neither the -w boot or the -w now options are specified, the mode change is made immediately. It persists across subsequent restarts if you run the bosboot command before the next system restart.
+== Processor control ==
+Setting this tunable to a value greater than -1 will enable the scheduler to enable and disable virtual processors based on the partition's CPU utilization.\\
+If vpm_xvcpus is greater than or equal to zero, processor folding is enabled. Otherwise, if it is equal to -1, folding is disabled\\
+Use below command to enable folding:\\
+<code bash>
+schedo -o vpm_xvcpus=0
+//Setting vpm_xvcpus to 0
+schedo -L vpm_xvcpus
+schedo -o vpm_fold_policy=0
+schedo -L vpm_fold_policy
+</code>
+Note: By default processor folding enabled in AIX\\
+== Smitty ==
+[[http://www.redbooks.ibm.com/redpapers/pdfs/redp0105.pdf| AIX System Management Interface Tool (SMIT) Redbook]]

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