tag:blogger.com,1999:blog-5391325129965939458.post295977245276951588..comments2024-03-18T01:53:00.753+01:00Comments on AIX for System Administrators: PERF. - BASICSaixhttp://www.blogger.com/profile/11198511213080760662noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-5391325129965939458.post-62364351963738147362014-05-29T21:00:18.423+02:002014-05-29T21:00:18.423+02:00ps -eo pid,vsz,user,comm|awk 'NR==1;{print|&qu...ps -eo pid,vsz,user,comm|awk 'NR==1;{print|"sort +1 -nr|head -20"}' will help to find which process is taking more memoryAnonymoushttps://www.blogger.com/profile/15191712788407598423noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-31815828059934947722013-10-23T07:54:26.162+02:002013-10-23T07:54:26.162+02:00When looking at "topas" we see Kern% mea...When looking at "topas" we see Kern% measurement higher than we think it should be. Often times it is on par with the size of the User% but we do see "spikes" in activity where Kern% is actually quite a bit higher then User%. What is the best way to identify which processes are be measured under this category?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-7369940024166291452013-06-08T10:59:35.558+02:002013-06-08T10:59:35.558+02:00You can find some description about zombie process...You can find some description about zombie processes here: http://aix4admins.blogspot.hu/2011/08/commands-and-processes-process-you-use.htmlaixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-69324046561840819712013-06-08T04:37:06.175+02:002013-06-08T04:37:06.175+02:00it must be zombie process... it must be zombie process... Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-50767306390971339112013-06-07T10:38:37.519+02:002013-06-07T10:38:37.519+02:00Hi, I never heard about "jumping process"...Hi, I never heard about "jumping process". Do you know what is that?aixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-82242463878328208762013-06-07T09:07:05.263+02:002013-06-07T09:07:05.263+02:00Hi admin...
In an interview i faced a question tha...Hi admin...<br />In an interview i faced a question that i am unable to answer. can you please tell me.<br /><br />The question is "what is jumping process, if a process is jumping what should i do, shall i kill it"Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-37928820167552570372013-05-13T08:29:10.420+02:002013-05-13T08:29:10.420+02:00Yes, this will do everything online, no reboot is ...Yes, this will do everything online, no reboot is needed. However I would choose a time when there is no heavy load on the system, and you can test this command on a test/development system prior to execute on prod. system to have some confidence in it.aixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-73762879385038057172013-05-13T08:03:22.465+02:002013-05-13T08:03:22.465+02:00Thanks for your reply. Can I run this command with...Thanks for your reply. Can I run this command with out taking any down time ?? as normally in the day time paging increases. Is it safe to run while users are online.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-13970050801055522812013-05-12T13:28:32.517+02:002013-05-12T13:28:32.517+02:00Hi, I can give you a workaround for this, but I ca...Hi, I can give you a workaround for this, but I can't tell you what is causing it. If you dynamically decrease the size of the paging space, AIX will create a temporary paging space with only the necessary data and then rename it as your original paging space. The command for example: chps -d 1 paging00. It will run for a long time, and in your rootvg must be enough free space, but after it finished usually paging space usage goes to a low percentage (unnecessary data will be flushed away). You can monitor its progress with nmon.<br />For the real cause I think it should be some Oracle issue...but IBM or Oracle should investigate it more.aixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-51682010895880187572013-05-12T10:57:56.100+02:002013-05-12T10:57:56.100+02:00Hi , I am Adeel. we are using Oracle Rac 10G R2 on...Hi , I am Adeel. we are using Oracle Rac 10G R2 on 2 nodes with OS 6.1 issue is with my 1 node its paging increases but its not reducing its paging itself at non-peak timings while other node releases its paging. as a result in 5,6 days its paging increases in such a way tht machine get reeboted. we have checked with IBM and Oracle but still not getting any proper response. other node behaviour is very normal. now every weak our admin stop Oracle instance on this node and then restart it in order to reduce the paging and avoid restart situation. this ractise is not gud as this is our CORE BANKING DB node. Kindly suggest. our Memory size on both machines are 16GB and paging we assigned is 18,19 GB. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-5405799893337521532013-05-10T08:06:09.537+02:002013-05-10T08:06:09.537+02:00Official page: https://www.ibm.com/developerworks/...Official page: https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Power+Systems/page/nmon_analyseraixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-70737870323149362712013-05-10T08:05:45.654+02:002013-05-10T08:05:45.654+02:00Hi, OK I try my best. The official page also can h...Hi, OK I try my best. The official page also can help you, if you download the .zip file, after unzipping it, there will be a documentation. (I would use that documentation too...)aixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-50235413723926373732013-05-10T05:48:31.364+02:002013-05-10T05:48:31.364+02:00Hi,
Can you please provide detailed information a...Hi,<br /><br />Can you please provide detailed information about default NMON Analyser output report? How can we modify it? What different parameters indicate? etc..<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-3183540559896808832012-11-19T10:34:38.644+01:002012-11-19T10:34:38.644+01:00I usually use these fields:
SYS_SUMM -for general...I usually use these fields:<br /><br />SYS_SUMM -for general overview<br />LPAR - for cpu usage<br />DISK_SUMM - for disk usage<br />FILE - for read/write <br />MEM, MEMNEW -for RAM usage<br />NET - for network usage<br />PAGE - for paging space activity<br />PROC - to see how many processes are in RunQueue<br />TOP - to see which process used how many CPU%aixhttps://www.blogger.com/profile/11198511213080760662noreply@blogger.comtag:blogger.com,1999:blog-5391325129965939458.post-32937274922064827362012-11-18T03:55:50.384+01:002012-11-18T03:55:50.384+01:00What are fields we need to monitor in NMON Analyse...What are fields we need to monitor in NMON Analyser report through which we point out the bootelnecks?Anonymousnoreply@blogger.com