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Svhptdaemon

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Old Unix and Linux 01-05-2017
bbbngowc bbbngowc is offline
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Svhptdaemon

Hello all and happy new year.

I have an HP-UX system running HP-UX B.11.31 U ia64 1161301486 and it has a weird process called "svhptdaemon" that's using 100% of the CPU. Anyon knows what this process is? I've tried googling the answer but even Google doesn't know Linux


Code:
CPU TTY    PID USERNAME PRI NI   SIZE    RES STATE    TIME %WCPU  %CPU COMMAND
 1   ?      28 root     152 20    72K    64K run   23992:09 100.40 100.23 svhptdaemon

Any help would be very much appreciated.
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Old Unix and Linux 01-05-2017
rbatte1 rbatte1 is offline Forum Staff  
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Can you find the executable? The path might give you a clue. Sadly I do not have an HP-UX server available any more.

I found these two hits looking for just "HP UX SVHPT". Do they help?


Robin

Last edited by rbatte1; 01-05-2017 at 11:58 AM.. Reason: Put URLs in a formatted list
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bbbngowc bbbngowc is offline
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Thanks but it doesn't really help. Such a weird process. I cannot stand HP-UX. Linux

I can't kill this process either. Kill nor Kill -9 options work. If I run which svhptdaemon - no entries. Rebooting the server, the process starts up again. Must find it!
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Old Unix and Linux 01-05-2017
jim mcnamara jim mcnamara is offline Forum Staff  
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svhpt is part of the vmunix kernel on HP. Since it has been a loong time since I did HP, we really should ask somebody like Methyl or Made in Germany.
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Old Unix and Linux 01-06-2017
MadeInGermany MadeInGermany is offline Forum Advisor  
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That explains why it cannot be killed.
While I have never met a svhptdaemon myself on HP-UX 11.31. Maybe it is associated with a certain function.
The kernel processes have PID 0. Can be listed with

Code:
pgrep -l -P 0

or

Code:
ps -ef | awk '$3==0'

Is there high %sys in sar 1 100 or vmstat 1?
Are there kernel messages in /var/adm/syslog/syslog.log ?
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Old Unix and Linux 01-06-2017
bbbngowc bbbngowc is offline
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Thanks "jim mcnamara" and "MadeInGermany" for the responses.

The service PID is 28 and the PPID is 0.

I had checked syslog but nothing related to that specific process was in the log file.

both SAR and vmstat shows about 50% usage for sys:


Code:
10:11:27    %usr    %sys    %wio   %idle
10:11:28       0      50       0      50
10:11:29       0      50       0      50
10:11:30       0      50       0      50
10:11:31       0      51       2      47


Code:
         procs           memory                   page                              faults       cpu
    r     b     w      avm    free   re   at    pi   po    fr   de    sr     in     sy    cs  us sy id
    2     1     0   127867  5713748    0    0     4    0     0    0     0    394    849    51   0 50 50
    2     1     0   127867  5713663    0    0     1    0     0    0     0    457    850    49   0 50 50
    2     1     0   127867  5713663    0    0     0    0     0    0     0    449    697    49   0 50 50

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Old Unix and Linux 01-06-2017
jim mcnamara jim mcnamara is offline Forum Staff  
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How do you attribute the 50% sys usage to that one process? That is for all processes is it not? BTW - when ANY process runs it spends time in kernel code (sys) when invoking a syscall, .e.g. open(). That means vmstat and sar would normally show a summed % sys for all processes system wide.

Doesn't mean that the daemon is or is not using most of that %.
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