[Spacewalk-list] Spacewalk slow opens full list of nodes (Systems) 250nodes

Tue Mar 29 02:31:42 UTC 2016

I have this values for JAVA_OPTS

tomcat   20101  0.3  0.7 4277092 513852 ?      Ssl  Mar25  16:36 java -ea
-Xms256m -Xmx256m -Djava.awt.headless=true
-Dorg.xml.sax.driver=org.apache.xerces.parsers.SAXParser
-Dorg.apache.tomcat.util.http.Parameters.MAX_COUNT=1024 -XX:MaxNewSize=256
Tried to increase Xms & Xmx, but didn't find any advantages

On Fri, Mar 25, 2016 at 8:09 PM, Matt Moldvan <matt at moldvan.com> wrote:

> You mentioned you did some Tomcat tuning, but what are your values set
> to?  I noticed some considerable speed up when I tinkered with PermSize and
> similar variables, like below.  I think the defaults are pretty low and not
> enough memory is allocated off the bat.  Also while the page is loading
> what do you notice in top or atop or htop?
>
> tomcat    2161     1  0 Mar24 ?        00:04:59 /usr/lib/jvm/java/bin/java
> -XX:NewRatio=4 -XX:PermSize=1024m -XX:MaxPermSize=2048m -XX:NewSize=2048m
> -XX:MaxNewSize=2048m -Xms8g -Xmx8g -XX:+UseParNewGC -XX:+UseConcMarkSweepGC
> -Dsun.rmi.dgc.client.gcInterval=3600000
> -Dsun.rmi.dgc.server.gcInterval=3600000...rest truncated
>
> On Fri, Mar 25, 2016 at 9:07 PM Konstantin Raskoshnyi <konrasko at gmail.com>
> wrote:
>
>> Sorry, Asking again...Any possibilities to fix this bug, without
>> upgrading the system?
>> It's a physical host. Today it's almost not working (Systems menu), even
>> if i list 25 hosts or search for a specific one. The top doesn't show any
>> processes locking the system.
>> Thanks!
>>
>> On Fri, Mar 25, 2016 at 10:41 AM, Matt Moldvan <matt at moldvan.com> wrote:
>>
>>> Yes I think the way the dependencies are set in the packages updating
>>> one will potentially update the rest, so best to do the update off hours,
>>> and if possible (if it's a VM for example) take a snapshot or back up of
>>> your config and database first.
>>>
>>> On Fri, Mar 25, 2016 at 12:14 PM Konstantin Raskoshnyi <
>>> konrasko at gmail.com> wrote:
>>>
>>>> Yep. I double checked the version, and it's 2.3.
>>>> Is it necessary to update the whole packages with yum?
>>>> It's the main deployment server. Don't want to get any troubles :).
>>>> Thanks!
>>>>
>>>>
>>>> On Friday, March 25, 2016, Matt Moldvan <matt at moldvan.com> wrote:
>>>>
>>>>> Cool, I was thinking you were already at 2.4 from your earlier reply.
>>>>> Either way good luck and let us know if it solves your issue in case anyone
>>>>> has the same question in the future.
>>>>>
>>>>> > The spacewalk version is 2.4, Oct 7th, 2015 Thanks!
>>>>>
>>>>> On Thu, Mar 24, 2016 at 11:15 PM Konstantin Raskoshnyi <
>>>>> konrasko at gmail.com> wrote:
>>>>>
>>>>>> Hi Matt!
>>>>>>
>>>>>> I tried to tune tomcat, but looks like here's my problem
>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1214437
>>>>>>
>>>>>> Going to upgrade to version 2.4..
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>> On Thu, Mar 24, 2016 at 8:06 PM, Matt Moldvan <matt at moldvan.com>
>>>>>> wrote:
>>>>>>
>>>>>>> What are your tomcat settings like?  We have maxThreads set to 2048
>>>>>>> for the 8009 and 8080 connectors in /etc/tomcat6/server.xml:
>>>>>>>
>>>>>>>     <Connector port="8080" protocol="HTTP/1.1"
>>>>>>> connectionTimeout="20000" redirectPort="8443" maxThreads="2048"
>>>>>>> maxKeepAliveRequests="1024" URIEncoding="UTF-8" address="127.0.0.1"/>
>>>>>>>     <Connector port="8009" protocol="AJP/1.3" redirectPort="8443"
>>>>>>> URIEncoding="UTF-8" address="127.0.0.1" maxThreads="2048"
>>>>>>> maxConnections="2048" connectionTimeout="600" keepAliveTimeout="600"/>
>>>>>>>
>>>>>>> Also, /etc/tomcat6/tomcat6.conf has some settings for JAVA_OPTS that
>>>>>>> are interesting for tuning purposes:
>>>>>>>
>>>>>>> JAVA_OPTS="-XX:NewRatio=4 -XX:PermSize=1024m -XX:MaxPermSize=2048m
>>>>>>> -XX:NewSize=2048m -XX:MaxNewSize=2048m -Xms8g -Xmx8g -XX:+UseParNewGC
>>>>>>> -XX:+UseConcMarkSweepGC -Dsun.rmi.dgc.client.gcInterval=3600000
>>>>>>> -Dsun.rmi.dgc.server.gcInterval=3600000"
>>>>>>>
>>>>>>> Listing 500 systems on our master took ~10.22 seconds on an 8
>>>>>>> vCPU/32GB RAM VMware VM, with an external Postgres database VM that has 8
>>>>>>> vCPU/16GB RAM, so yours could be much quicker with some additional tuning,
>>>>>>> I would think.
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Mar 24, 2016 at 10:01 PM Konstantin Raskoshnyi <
>>>>>>> konrasko at gmail.com> wrote:
>>>>>>>
>>>>>>>> The spacewalk version is 2.4, Oct 7th, 2015
>>>>>>>>
>>>>>>>> Thanks!
>>>>>>>>
>>>>>>>> On Thu, Mar 24, 2016 at 6:21 PM, William H. ten Bensel <
>>>>>>>> WHTENBEN at up.com> wrote:
>>>>>>>>
>>>>>>>>> What version of spacewalk are you running?
>>>>>>>>>
>>>>>>>>> Bill
>>>>>>>>>
>>>>>>>>> On Mar 24, 2016, at 20:15, Konstantin Raskoshnyi <
>>>>>>>>> konrasko at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>> This email originated from outside of the company. Please use
>>>>>>>>> discretion if opening attachments or clicking on links.
>>>>>>>>> ------------------------------
>>>>>>>>>
>>>>>>>>> Hi Community!
>>>>>>>>> We have a spacewalk server on SCLinux 7.1, Java 1.7 and postgres
>>>>>>>>> When I open Systems menu (list servers) and list whole 250 nodes -
>>>>>>>>> it takes about 90 seconds.
>>>>>>>>> The java process shows 400%.
>>>>>>>>> The server has 64Gb of Ram and 24 cores.
>>>>>>>>> Thought the problem in postgres, actually i got the query from the
>>>>>>>>> log file, the query runs about 8seconds.
>>>>>>>>> All other time Java doing something...
>>>>>>>>> Any solutions?
>>>>>>>>>
>>>>>>>>> Thanks!
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> **
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>>>
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>>>>>>>>
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