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Patch Name: PHKL_22986
Patch Description: s700_800 11.00 cumulative pstat patch
Creation Date: 01/01/22
Post Date: 01/01/30
Hardware Platforms - OS Releases:
s700: 11.00
s800: 11.00
Products: N/A
Filesets:
OS-Core.CORE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP
ProgSupport.C-INC,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP
Automatic Reboot?: Yes
Status: General Superseded
Critical: No
Category Tags:
defect_repair hardware_enablement enhancement
general_release
Path Name: /hp-ux_patches/s700_800/11.X/PHKL_22986
Symptoms:
PHKL_22986:
( SR:8606168994 CR:JAGad38272 )
pstat(2) system call does not provide sufficient information
on processor activation and deactivation required by the
OpenView product. As a result, the OpenView performance
tools are currently not able to maintain accurate processor
statistics in an environment where the instant processor
activation or deactivation features are being utilized.
This patch provides pstat(2) changes to support OpenView
management of processor statistics related to instant
processor activation and deactivation, such as used by the
Instant Capacity On Demand (iCOD) product.
PHKL_22588:
( SR: 165309203 DTS: JAGab25292 )
This is an enhancement to enable access to the POSIX message
queues and named semaphores. This patch provides the kernel
support; the commands patch PHCO_22592 provides the user
interface.
PHKL_22413:
( SR: 8606160396 CR: JAGad29718 )
When a processor is deallocated, pstat_getproc() or
pstat_getlwp() may return a process or thread which shows
that it is sleeping on the deallocated processor.
PHKL_21684:
( SR: 5003460949 DTS: JAGab15326 )
This is an enhancement for increasing the SysV IPC MSGMNB
message queue capacity from a 16bit(ushort) limit to a
32bit(int) limit for re-compiled applications which are
designed specifically to take advantage of this feature.
The enhancement is contained in three patches; this one
(providing pstat(2) support) plus PHKL_21518 (SysV IPC
changes) and PHKL_21778 (new tunables range limits, used by
SAM). PHKL_21518 must be installed for this patch to be
enabled and it is strongly advised that all three patches be
installed if this feature is desired. Without installing
this patch and PHKL_21518, this change will have no impact
on the system.
PHKL_21700:
( SR: 8606127468 DTS: JAGac77753 )
The pstat_dynamic structure (pstat(2) pstat_getdynamic())
always returns the total processor number in psd_proc_cnt,
which is incorrect when processors are deallocated.
The calculation of values psd_avg_1_min, psd_avg_5_min,
psd_avg_15_min and psd_cpu_time[] in pstat_dynamic structure
(pstat(2) pstat_getdynamic()) are incorrect in the case
where processors are deallocated.
pstat_getlwp() (pstat(2)) returns array elements which
includes threads that are not recognized by user.
PHKL_20943:
( SR: 8606112164 DTS: JAGab84450 )
Enhancement: Performance changes for corner case in RTSCHED
scheduling. This patch has no impact on most systems.
PHKL_19573:
pstat_getlv() fails to get information on volumes in groups
other than 0.
PHKL_19186:
The command 'fuser' takes a long time because it calls
pstat_getprocvm(), where a lot of system time is spent
calculating/gathering the variable-sized pages statistics.
Defect Description:
PHKL_22986:
( SR:8606168994 CR:JAGad38272 )
Although instant processor activation and deactivation
functionality already exists in HP-UX, information about
processors in this environment, including processor logical
id, activation and deactivation status, and interrupt flag,
is currently unavailable from pstat(2). This information is
needed by the OpenView performance tools to maintain
accurate processor statistics.
Resolution:
Add psp_logical_id, psp_processor_state, and
"PSP_INTERRUPT_ENABLED/PSP_INTERRUPT_DISABLED" psp_flags
fields to the __pst_processor data structure.
PHKL_22588:
( SR: 165309203 DTS: JAGab25292 )
Enhancement to provide kernel support for access to the
information about POSIX message queues and named semaphores.
The commands patch, PHCO_22592, must be installed to display
the information about POSIX message queues and named
semaphores as well as to remove POSIX message queues and
named semaphores.
Resolution:
New functionality to retrieve information about POSIX
message queues and named semaphores has been added to
pstat(). After the patch is installed, kernel information
about POSIX message queues and named semaphores can be
accessed through the pstat() system call.
PHKL_22413:
( SR: 8606160396 CR: JAGad29718 )
A kernel thread maintains information (kt_spt) which
indicates the processor it was running on. If the processor
is deallocated, this information is not changed until the
thread actually wakes up. So pstat_getproc() or
pstat_getlwp() can return the deallocated processor index if
the thread is still sleeping.
Resolution:
If the thread's processor field (kt_spu) indicates a
processor that is deallocated, pstat_getproc() and
pstat_getlwp() will return the monarch processor index
instead. (When the thread wakes up, it will be schedualed
there.)
PHKL_21684:
( SR: 5003460949 DTS: JAGab15326 )
This is a companion patch to PHKL_21518 and PHKL_21778,
which are designed to increase the SysV IPC MSGMNB message
queue capacity from the 16bit(ushort) limit to a 32bit(int)
maximum. This patch provides the pstat(2) enhancements to
support this feature.
Please see the PHKL_21518 documentation for details and
installation notes. Installation of this patch without
PHKL_21518 will not enable this feature and of no effect on
the system.
Note: installing PHKL_21518 (sysV_msg.o), but not this
patch, means that applications compiled with the #define
__BIGMSGQUEUE_ENABLED may not run or may not run correctly.
PHKL_21700:
( SR: 8606127468 DTS: JAGac77753 )
pstat_dynamic is returning a psd_proc_cnt that is always the
same as psd_max_proc_cnt. This should not be the case when
processors have been deallocated because psd_proc_cnt is
supposed to reflect the number of active processors.
psd_avg_1_min, psd_avg_5_min, psd_avg_15_min and
psd_cpu_time[] are based on the number of processors in the
system instead of the number of active processors.
pstat_getlwp incorrectly includes threads that are in state
TSUNUSED and TSIDL. Customers will see threads that should
not be exposed to their applications.
Resolution:
pstat_dynamic: psd_proc_cnt reflects the number of
allocated processors instead of total number of processors
installed on the system. This is done by checking the state
of each processor before incrementing psd_proc_cnt.
The following list of commands use psd_proc_cnt incorrectly:
sadc, vmstat, iostat, top and uptime. If processors are
deallocated after this patch is installed, these commands
will display incorrect data in fields that are based on the
psd_proc_cnt value (i.e. load average, active processors).
Note: The system online diagnostics interface is the only
application currently able to deallocate a processor (and is
used to deallocate a processor that has detected LPMCs).
This problem applies to processor "deactivation" thru HP-UX,
not processor "deconfiguration" thru a BCH or OBP firmware
prompt.
The calculation of psd_avg_*_min and psd_cpu_time[] in
pstat_dynamic the structure now excludes deallocated
processors.
pstat_getlwp: check that thread state is not in either of
these two states before incrementing the count.
PHKL_20943:
( SR: 8606112164 DTS: JAGab84450 )
This is an enhancement for a corner case in RTSCHED
scheduling.
Resolution:
Code added to fine tune RTSCHED thread scheduling code path.
PHKL_19573:
For most configurations, the searching code in pstat_getlv()
was getting stuck in volume group 0.
Resolution:
Re-worked the searching code to look at all appropriate
volume groups.
PHKL_19186:
To reproduce the problem, create a very large shared memory
segment. Fork about 1000 children and have each child
attach to it. Then reboot the machine and run 'fuser'.
The defect itself can be described as a performance problem
when running 'fuser' in the above scenario. The problem
lies in the fact that pstat_getprocvm() takes a long time
to calculate the variable-sized statistics. These
statistics were gathered no matter what, since they are
components of the pst_vm_status structure.
Resolution:
These variable-sized statistics will only be gathered if
the application wishes to gather them. The application can
exercise this option by requesting the right 'size' (an
argument to the pstat system call) of information that it
is requesting to be returned. For example, the pstat
interface will only return the first 'n' bytes of info-
mation when the 'size' argument is 'n'. Therefore,
'fuser' can provide a 'size' less than the offsets of
these variable-sized fields in the pst_vm_status structure
to skip the process of gathering these statistics.
SR:
1653305326 1653309203 5003460949 8606100264 8606112164
8606127468 8606160396 8606168994
Patch Files:
OS-Core.CORE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
/usr/conf/h/pstat.h
ProgSupport.C-INC,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
/usr/include/sys/pstat.h
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
/usr/conf/lib/libhp-ux.a(pstat.o)
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
/usr/conf/lib/libhp-ux.a(pstat.o)
what(1) Output:
OS-Core.CORE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
/usr/conf/h/pstat.h:
pstat.h $Date: 2001/01/18 17:37:35 $Revision: r11ros
/6 PATCH_11.00 (PHKL_22986)
ProgSupport.C-INC,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
/usr/include/sys/pstat.h:
pstat.h $Date: 2001/01/18 17:37:35 $Revision: r11ros
/6 PATCH_11.00 (PHKL_22986)
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
/usr/conf/lib/libhp-ux.a(pstat.o):
pstat_extensions.h $Date: 2000/10/28 15:14:03 $Revis
ion: r11ros/2 PATCH_11.00 (PHKL_22588)
pstat.c $Date: 2001/01/18 16:36:41 $Revision: r11ros
/24 PATCH_11.00 (PHKL_22986)
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
/usr/conf/lib/libhp-ux.a(pstat.o):
pstat_extensions.h $Date: 2000/10/28 15:14:03 $Revis
ion: r11ros/2 PATCH_11.00 (PHKL_22588)
pstat.c $Date: 2001/01/18 16:36:41 $Revision: r11ros
/24 PATCH_11.00 (PHKL_22986)
cksum(1) Output:
OS-Core.CORE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
3191258173 83471 /usr/conf/h/pstat.h
ProgSupport.C-INC,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
3191258173 83471 /usr/include/sys/pstat.h
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
652477006 62144 /usr/conf/lib/libhp-ux.a(pstat.o)
OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
1913609318 121808 /usr/conf/lib/libhp-ux.a(pstat.o)
Patch Conflicts: None
Patch Dependencies:
s700: 11.00: PHKL_18543
s800: 11.00: PHKL_18543
Hardware Dependencies: None
Other Dependencies:
s700: 11.00: PHKL_21518 PHKL_21778
s800: 11.00: PHKL_21518 PHKL_21778
PHKL_21684, PHKL_21518, PHKL_21778 together provide
an enhancement to increase the SysV IPC MSGMNB
message queue capacity. To enable the enhancement,
both PHKL_21684 and PHKL_21518 must be installed,
and PHKL_21778 is required if SAM support is desired
to modify system tunables. Each may be installed
independently of the others.
s700: 11.00: PHCO_22592
s800: 11.00: PHCO_22592
PHKL_22588 and PHCO_22592 together provide an
enhancement so the customer is able to use commands
to display the information about POSIX message
queues and named semaphores as well as remove them.
Supersedes:
PHKL_22588 PHKL_22413 PHKL_21700 PHKL_21684 PHKL_20943 PHKL_19573
PHKL_19186
Equivalent Patches: None
Patch Package Size: 390 KBytes
Installation Instructions:
Please review all instructions and the Hewlett-Packard
SupportLine User Guide or your Hewlett-Packard support terms
and conditions for precautions, scope of license,
restrictions, and, limitation of liability and warranties,
before installing this patch.
------------------------------------------------------------
1. Back up your system before installing a patch.
2. Login as root.
3. Copy the patch to the /tmp directory.
4. Move to the /tmp directory and unshar the patch:
cd /tmp
sh PHKL_22986
5. Run swinstall to install the patch:
swinstall -x autoreboot=true -x patch_match_target=true \
-s /tmp/PHKL_22986.depot
By default swinstall will archive the original software in
/var/adm/sw/save/PHKL_22986. If you do not wish to retain a
copy of the original software, use the patch_save_files option:
swinstall -x autoreboot=true -x patch_match_target=true \
-x patch_save_files=false -s /tmp/PHKL_22986.depot
WARNING: If patch_save_files is false when a patch is installed,
the patch cannot be deinstalled. Please be careful
when using this feature.
For future reference, the contents of the PHKL_22986.text file is
available in the product readme:
swlist -l product -a readme -d @ /tmp/PHKL_22986.depot
To put this patch on a magnetic tape and install from the
tape drive, use the command:
dd if=/tmp/PHKL_22986.depot of=/dev/rmt/0m bs=2k
Special Installation Instructions:
If you wish to display the information about POSIX message
queues and named semaphores as well as to remove POSIX
message queues and named semaphores, you must install the
commands patch, PHCO_22592, in addition to this patch.
If you wish to enable the increased SysV IPC MSGMNB message
queue capacity feature delivered in patches PHKL_21518,
PHKL_21778, and PHKL_21684, it is highly recommended that
all of the Special Installation Instructions for the
PHKL_21518 (sysV_msg.o) patch be read prior to installing
this patch.
This patch depends on base patch PHKL_18543.
For successful installation please insure that PHKL_18543
is already installed, or that PHKL_18543 is included
in the same depot with this patch and PHKL_18543
is selected for installation.
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