Часть 1. Обновления утилит AIX 5.2

info: 
    Description = "набор параметров настройки для сервера отдела "
	AIX_level = "5.2.0.0" 
    Kernel_type = "UP" 
    Last_validation = "2002-06-16 12:11:11 CDT current"

schedo: 
    timeslice = "2" # set timeslice to 30ms
    sched_D = "DEFAULT" # value was 123

vmo: 
    minperm = "48538"
    memory_frames = "65536" # STATIC (never restored)

ioo: 
    iotunable = "value" 

no: 
    ipforwarding = "1"
    ipsrcrouteforward = "1"
    thewall = "STATIC" # value was 131072 (never restored)

nfso: 
    nfs_allow_all_signals = "0" # DEFAULT VALUE
    nfs_device_specific_bufs = "0"

> schedo -L | more
 
Name             	Current  Default  Reboot   Minimum    Maximum    Unit       Type 
                        value	 value	  value	   value      value        Dependencies
v_repage_hi               0        0        0        0        2147483647              D
v_repage_proc             4        4        4        0        2147483647              D
v_sec_wait                1        1        1        0        2147483647 seconds      D
v_min_process             2        2        2        0        2147483647 processes    D
v_exempt_secs             2        2        2        0        2147483647 seconds      D
pacefork		 10	  10       10       10        2147483647 clock ticks  D
sched_D                  16       16       16        0        32                      D
sched_R                  16       16       16        0        32                      D
timeslice                 1        1        1        0        2147483647 clock ticks  D
maxspin                 16384    16384    16384      1        4294967295 spins        D
%usDelta	         100      100      100       0	      100		      D
affinity_lim	          7	   7	    7	     0	      100	 dispatches   D
idle_migration_barrier    4	   4	    4        0	      100	 sixteenth    D
fixed_pri_global	  0	   0	    0	     0	      1	         boolean      D

> schedo -L  maxspin

Name             	Current  Default  Reboot   Minimum    Maximum    Unit       Type 
                       	value	 value	  value	   value      value          Dependencies
maxspin      		16384    16384    16384	   1	      4294967295 spins	      D

> vmo -x

memory_frames,786432,,786432,,,4KB pages,S,                         
pinnable_frames,740146,,740146,,,4KB pages,S,                       
maxfree,128,128,128,16,204800,4KB pages,D,minfree memory_frames     
minfree,120,120,120,8,204800,4KB pages,D,maxfree memory_frames      
minperm%,20,20,20,1,100,% memory,D,maxperm%                         
minperm,149033,,149033,,,,S,                                        
maxperm%,80,80,80,1,100,% memory,D,minperm% maxclient%              
maxperm,596137,,596137,,,,S,                                        
strict_maxperm,0,0,0,0,1,boolean,D,                                 
maxpin%,80,80,80,1,99,% memory,D,pinnable_frames memory_frames      
maxpin,629146,,629146,,,,S,                                         
maxclient%,80,80,80,1,100,% memory,D,maxperm%                       
lrubucket,131072,131072,131072,65536,,4KB pages,D,                  
defps,1,1,1,0,1,boolean,D,                                          
nokilluid,0,0,0,0,2147483647,uid,D,                                 
numpsblks,131072,,131072,,,4KB pages,S,                             
npskill,1024,1024,1024,1,131071,4KB pages,D,                        
npswarn,4096,4096,4096,0,131071,4KB pages,D,                        
v_pinshm,0,0,0,0,1,boolean,D,                                       
pta_balance_threshold,50,50,50,1,99,% pta segment,D,                
pagecoloring,0,0,0,0,1,boolean,B,                                   
framesets,2,2,2,1,10,,B,                                            
mempools,2,1,2,1,2,,B,                                              
lgpg_size,0,0,0,0,268435456,bytes,B,lgpg_regions                              
lgpg_regions,0,0,0,0,,,B,lgpg_size                        
num_spec_dataseg,n/a,0,0,0,,,B,                           
spec_dataseg_int,n/a,512,512,0,,,B,                       
memory_affinity,n/a,1,1,0,1,boolean,B,                    

> vmo -h

Usage:  ioo -h [tunable] | {-L [tunable]} | {-x [tunable]}                      
        ioo [-p|-r] (-a | {-o tunable})                                         
        ioo [-p|-r] (-D | ({-d tunable} {-o tunable=value}))                    
  -h                Display help about the command and its arguments            
  -h tunable        Display help about a tunable                                
  -L [tunable]      List information about one or all tunables in a             
                    table format                                                
  -x [tunable]      List information about one or all tunables in a             
                    comma-separated format                                      
  -a                Display value for all tunables, one per line                
  -o tunable        Display current value of a tunable                          
  -D                Reset all tunables to their default values                  
  -d tunable        Reset tunable to its default value                          
  -o tunable=value  Set tunable to value                                        
  -r        Make change(s) (-D/-d/-o) or display (-a/-o) apply to       
                    nextboot value                                              
  -p                Make change(s) (-D/-d/-o) or display (-a/-o) apply to  
                    permanent (current and nextboot) value  

> vmo –h minfree
Help for tunable minfree:                                                       
Specifies the minimum number of frames on the free list at which the VMM starts 
to steal pages to replenish the free list. Default: maxfree - 8; Range: 8 to 204
800. Page replacement occurs when the number of free frames reaches minfree. If 
processes are being delayed by page stealing, increase minfree to improve response
time. The difference between minfree and maxfree should always be equal to or
greater than maxpgahead.                                                       

> schedo –h sched_D
Sets the short term CPU usage decay rate. Default: 16; Range: 0 to 32. 
The default is to decay short-term CPU usage by 1/2 (16/32) every second. 
Decreasing this value enables foreground processes to avoid competition with
background processes for a longer time.

 > schedo -L sched_R
Name		Current	Default	Reboot   Minimum     Maximum    Unit       Type   
              	Value	value	value	 value	       value            Dependencies  
sched_R		16	16	16 	 0	       32		    D

> schedo -o sched_R=19
Setting sched_R to 19

> schedo -L sched_R
Name		Current	Default	Reboot   Minimum     Maximum    Unit       Type    
              	Value	value	value	value	     value               Dependencies 
sched_R		19	16	16	  0	       32		    D

> schedo -d sched_R
Setting sched_R to 16

> schedo -L sched_R
Name		Current	Default	Reboot   Minimum     Maximum    Unit       Type    
              	Value	value	value	value	       value         Dependencies
sched_R		16	16	16	 0	       32		    D

> ioo –o sync_release_ilock=1
Setting sync_release_ilock to 1

> ioo -o minpgahead=4
Setting minpgahead to 4

 > ioo -L  sync_release_ilock
Name		     Current	Default	Reboot   Minimum  Maximum    Unit  Type    
                     value	value	value	 value	     value    Dependencies
sync_release_ilock     1	  0	  0	   0	       1	boolean     D

> ioo -L minpgahead
Name		     Current	Default	Reboot   Minimum  Maximum    Unit  Type    
                     value	value	value	 value	     value    Dependencies
Minpgahead	  4	2	 2	   0 40964KB pages D maxpgahead

> ioo -D
Setting minpgahead to 2
Setting maxpgahead to 8
Setting pd_npages to 65536
Setting maxrandwrt to 0
Setting numclust to 1
Setting numfsbufs to 186
The numfsbufs change is only effective for future mounts

Setting sync_release_ilock to 0
Setting lvm_bufcnt to 9
Setting j2_minPageReadAhead to 2
Setting j2_maxPageReadAhead to 8
Setting j2_nBufferPerPagerDevice to 512
The j2_nBufferPerPagerDevice change is only effective for future mounts
Setting j2_nPagesPerWriteBehindCluster to 32
Setting j2_maxRandomWrite to 0
Setting j2_nRandomCluster to 0
Setting hd_pbuf_cnt to 320

> nfso -o nfs_max_threads=4
nfso: 1831-535 Error occurred trying to set nfs_max_threads to 4.

> ioo -o minpgahead=5120
invalid tunable value 5120
maximal value for tunable minpgahead is 4096

> schedo -o pacefork=9
invalid tunable value 9
minimal value for tunable pacefork is 10

> vmo -o pagecoloring=1
Tunable pagecoloring is of type B and can't be changed without -p or -r

> ioo -L lvm_bufcnt
Name             Current	Default	Reboot	Minimum      Maximum   Unit   Type
                 value     	value	value	value	     value           Dependencies
lvm_bufcnt        9		  9	  9       1	        64     128KB/buffer  D

> cat /etc/tunables/lastboot | fgrep lvm_bufcnt
	lvm_bufcnt = "9"

> cat /etc/tunables/nextboot  | grep lvm_bufcnt
lvm_bufcnt  = "9"

> ioo -p -o lvm_bufcnt=12
Setting lvm_bufcnt to 12 in nextboot file
Setting lvm_bufcnt to 12

> ioo -L lvm_bufcnt
Name             Current	Default	Reboot	Minimum      Maximum   Unit        Typу
                 value     	value	value	value	     value  Dependencies
lvm_bufcnt        12	          9	 12       1	       64     128KB/buffer   D

> cat /etc/tunables/lastboot | fgrep lvm_bufcnt
	lvm_bufcnt = "9"

> cat /etc/tunables/nextboot  | grep lvm_bufcnt
lvm_bufcnt  = "12"

> vmo -L mempools
Name             Current     Default	Reboot	Minimum     Maximum    Unit  Type 
                 Value       value      value	value	    value      Dependencies
Mempools	   1	       1          1       1           2	       	           B

> cat /etc/tunables/lastboot | fgrep mempools
	mempools = "1"
> cat /etc/tunables/nextboot  | grep mempools
mempools = "1"

>vmo -p -o mempools=2
vmo: 1485-115 Tunable mempools is of type B and cannot be changed without –r

> vmo -r -o mempools=2
Setting mempools to 2  in nextboot file
Warning: bosboot must be called and the system rebooted for the 
mempools change to take effect
Run bosboot now? [y/n] y

bosboot: Boot image is 16773 512 byte blocks.
Changes will take effect only at next reboot

> vmo -L mempools
Name         Current     Default	Reboot	Minimum   Maximum  Unit Type 
            Value       value      value	value	    value  Dependenciest
Mempools	   1	       1          2       1           2	       	           B

> cat /etc/tunables/lastboot | fgrep mempools
	mempools = "1"

> cat /etc/tunables/nextboot  | grep mempools
mempools = "2"

> no -r -o rto_limit=10

> no -L rto_limit
Name	    Value	Default	 Boot   Min      Max   Unit Type
rto_limit     7	      7    10     1    64    roundtriptime	 D

/etc/tunables:> tunsave -f myfile

/etc/tunables:> cat myfile
info:
        Description = "tunsave -f myfile"
        AIX_level = "5.2.0.0"
        Kernel_type = "MP"
        Last_validation = "2003-06-02 09:33:06 CDT (current, reboot)"

schedo:
vmo:
        mempools = "2"
ioo:
         lvm_bufcnt="12
no:
        rto_limit = "10"
nfso:
        nfs_v2_vm_bufs = "2000"

/etc/tunables:> tuncheck -f myfile
Tunable mempools is of type B and can't be changed without -p or -r
Checking failed
Messages should have been provided

/etc/tunables> tuncheck -r -f myfile
Setting mempools to 2 in nextboot file
Warning: bosboot must be called and the system rebooted 
for the mempools change to take effect
Run bosboot now? [y/n] y

bosboot: Boot image is 16773 512 byte blocks.
Changes will take effect only at next reboot

/etc/tunables:> cat myfile
info:
        Description = "tunsave -f myfile"
        AIX_level = "5.2.0.0"
        Kernel_type = "MP"
        Last_validation = "2003-06-02 09:33:06 CDT (current, reboot)"

schedo:
vmo:
        mempools = "2"
ioo:
         lvm_bufcnt="12
no:
        rto_limit = "10"
nfso:
       nfs_v2_vm_bufs = "2000"

/etc/tunables:> tunrestore -r -f myfile
/etc/tunables:> shutdown –Fr

/etc/tunables: > cat lastboot | grep mempools
	mempools = "2"
/etc/tunables: > cat lastboot | grep rto_limit
	rto_limit = "10"
/etc/tunables: > cat lastboot | grep nfs_v2_vm_bufs
	nfs_v2_vm_bufs = "2000"

lsattr –E –l sys0 | grep pre52tune

chdev –l sys0 –apre520tune=disable|enable

/etc/tunables> tunrestore -r -f  lastboot