HP-UX kernel for SAP

本帖最后由 spain.yx 于 2011-3-31 17:40 编辑

本文档只针对HP-UX 11.31

o CHECK a kernel parameter: "kctune "
o SET a kernel parameter: "kctune ="
o check DEFAULT parameter value: "kctune -v "
o To check VxFS version use one of the following commands:
# /sbin/fs/vxfs/subtype -v
(Output "50:0" means VxFS 5.0 and "50:1" means VxFS 5.0.1)
or (if "subtype" command not installed)
# swlist -l product |grep -i "base vxfs"
o The attached script "HP-UX_1131_Kernel_Parms_for_SAP.txt" may be
used to set the parameters as recommended below.
NOTE: The script does not include the sections "Filesystem Caching"
or "Miscellaneous" since these depend on customer choices, e.g. I/O
Type.

Message parameters
msgtql 4096
msgmnb 65535
msgmni 4096
Semaphores
semmns 16384
semmni 8192
semmnu 4092
Shared Memory
shmmax 0x40000000000 (Maximum)
shmmni 4096
shmseg 512
Filesystem
maxfiles_lim 63488
maxfiles 4096
nflocks 8192
vx_ninode 131072 (for VxFS 4.x and VxFS 5.x)
40000 (for VxFS 3.x)
vxfs_ifree_timelag -1
(only in combination with vx_ninode as above)
Process Management
maxdsiz_64bit 17179869184
maxssiz_64bit 1073741824
maxuprc 4096
max_thread_proc 3000 (Due to Java, see note 534867)
nkthread 250000 (Due to Java, see note 534867)
Memory Management
vps_ceiling 64
mprotect_reduce_protid_on 0 (PHSS_40130 onwards)
Filesystem Caching
filecache_max 8% (Use "Percent" symbol with kctune)
                            (or lower if using direct I/O, see note 1077887)
filecache_min 5% (Use "Percent" symbol with kctune)
                           (or lower if using direct I/O, see note 1077887)
                           (If the HP-UX Server has >4GB RAM, then lower settings for Filecache size could be more appropriate.)
Miscellaneous
process_id_max default (30000)
(SAP PIDs are restricted to 8 digits.
process_id_max must not exceed "99999999")
process_id_min default (0)
base_pagesize 4 (Itanium >= 11.31 Update 3, see note 1329878)
lcpu_attr 1 (Itanium only, see note 1329360 for details)