Hi,
I can see this line in the startup log:
[windows.PerfCounterWildcardQuery] - Disabling further attempts to query Processor Information.
Could it mean that disabling is not successful, or is there still something else to disable?
-Jukka-
···
Lähettäjä: Andrea Aime <andrea.aime@…6887…>
Lähetetty: lauantai 18. syyskuuta 2021 18.58
Vastaanottaja: Rahkonen Jukka (MML) <jukka.rahkonen@…4189…>
Kopio: geoserver-devel@lists.sourceforge.net
Aihe: Re: [Geoserver-devel] Geoserver 2.20.RC generating high CPU load
Had a quick look… the slow bit of code is likely this one:
The OSProcess needs to be fetched in order to the updated info about CPU
There is a history of OSHI being slow on Windows. Some of the timings in there are scary, 300ms spent on that
call are kind of crazy. Some of that slowness has been fixed, but I don’t know how much better it is now.
Reading the report, the fix may be language-specific too, it’s checking for English keys in the registry,
and may not find them:
The loop is there to accumulate the CPU time spent by the JVM running GeoServer process…
gets the info and sleeps for one second. Working 300ms and then sleep 1000ms is not exactly
“background” work indeed.
I guess we could make the sleep longer? Or have it configurable, even with just a system variable?
Maybe have a longer default sleep time on Windows?
Cheers
Andrea
On Fri, Sep 17, 2021 at 4:00 PM Andrea Aime <andrea.aime@…6887…> wrote:
Ok, it is what I was expecting: OSHI.
This is the thread that has accumulated more time on the CPU, as reported by the “cpu=121484.38ms” stat.
“Thread-11” #91 prio=5 os_prio=0 cpu=121484.38ms elapsed=229.76s tid=0x000001d8ec5cd800 nid=0xa890 runnable [0x00000069cd1fe000]
java.lang.Thread.State: RUNNABLE
at com.sun.jna.Native.invokeInt(Native Method)
at com.sun.jna.Function.invoke(Function.java:426)
at com.sun.jna.Function.invoke(Function.java:361)
at com.sun.jna.Library$Handler.invoke(Library.java:265)
at com.sun.proxy.$Proxy109.WTSEnumerateProcessesEx(Unknown Source)
at oshi.driver.windows.registry.ProcessWtsData.queryProcessWtsMapFromWTS(ProcessWtsData.java:85)
at oshi.driver.windows.registry.ProcessWtsData.queryProcessWtsMap(ProcessWtsData.java:74)
at oshi.software.os.windows.WindowsOperatingSystem.processMapToList(WindowsOperatingSystem.java:327)
at oshi.software.os.windows.WindowsOperatingSystem.getProcess(WindowsOperatingSystem.java:304)
at org.geoserver.system.status.OSHISystemInfoCollector.lambda$new$0(OSHISystemInfoCollector.java:75)
at org.geoserver.system.status.OSHISystemInfoCollector$$Lambda$412/0x00000008008d4c40.run(Unknown Source)
at java.lang.Thread.run(java.base@…7060…/Thread.java:829)Any OSHI expert around? Do we have to keep this thing running all the times (as opposed to, when the monitor tab is open?),
If so, would it be possible:
- To drastically reduce its CPU consumption (I’m guessing it’s polling the system too much?)
- Ignore it and move on when hitting a platfom that is not supported? (has happened a couple of times already)
Cheers
Andrea
On Fri, Sep 17, 2021 at 2:48 PM Rahkonen Jukka (MML) <jukka.rahkonen@…4189…> wrote:
Hi,
Re-sending to correct developer list. I attach also the output from jstack .
-Jukka-
Lähettäjä: Rahkonen Jukka (MML)
Lähetetty: perjantai 17. syyskuuta 2021 9.29
Vastaanottaja: ‘gdal-dev@…1232…’ <gdal-dev@…1232…>
Aihe: Geoserver 2.20.RC generating high CPU loadHi,
I installed and started GS 2.20 yesterday on Windows and now the corresponding OpenJDK 11 process shows constant high CPU usage (12-17%). Service is started at localhost:8080 and I do not generate any requests for the service. I do not understand what happens and how to investigate the situation. Any suggestions?
-Jukka Rahkonen-
Geoserver-devel mailing list
Geoserver-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-devel–
Regards,
Andrea Aime
==
GeoServer Professional Services from the experts!Visit http://bit.ly/gs-services-us for more information.
Ing. Andrea Aime
@geowolf
Technical LeadGeoSolutions Group
phone: +39 0584 962313fax: +39 0584 1660272
mob: +39 333 8128928
https://www.geosolutionsgroup.com/
http://twitter.com/geosolutions_it
Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia.
This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail
–
Regards,
Andrea Aime
==
GeoServer Professional Services from the experts!
Visit http://bit.ly/gs-services-us for more information.
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions Group
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928
https://www.geosolutionsgroup.com/
http://twitter.com/geosolutions_it
Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia.
This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail