Join IIUG
 for   
 

Informix News
18 Nov 13 - ZDNet - Top 20 mobile skills in demand... Read
09 Sep 13 - telecompaper - Shaspa and Tatung have shown a new smart home platform at Ifa in Berlin. Powered by the IBM Informix software... Read
06 Sep 13 - IBM data magazine - Mission Accomplished - Miami, Florida will be the backdrop for the 2014 IIUG Informix Conference... Read
01 Feb 13 - IBM Data Magazine - Are your database backups safe? Lester Knutsen (IBM Champion) writes about database back up safety using "archecker"... Read
14 Nov 12 - IBM - IBM's Big Data For Smart Grid Goes Live In Texas... Read
3 Oct 12 - The Financial - IBM and TransWorks Collaborate to Help Louisiana-Pacific Corporation Achieve Supply Chain Efficiency... Read
28 Aug 12 - techCLOUD9 - Splunk kicks up a SaaS Storm... Read
10 Aug 12 - businessCLOUD9 - Is this the other half of Cloud monitoring?... Read
3 Aug 12 - IBM data management - Supercharging the data warehouse while keeping costs down IBM Informix Warehouse Accelerator (IWA) delivers superior performance for in-memory analytics processing... Read
2 Aug 12 - channelbiz - Oninit Group launches Pay Per Pulse cloud-based service... Read
28 May 12 - Bloor - David Norfolk on the recent Informix benchmark "pretty impressive results"... Read
23 May 12 - DBTA - Informix Genero: A Way to Modernize Informix 4GL Applications... Read
9 Apr 12 - Mastering Data Management - Upping the Informix Ante: Advanced Data Tools... Read
22 Mar 12 - developerWorks - Optimizing Informix database access... Read
14 Mar 12 - BernieSpang.com - International Informix User Group set to meet in San Diego... Read
1 Mar 12 - IBM Data Management - IIUG Heads West for 2012 - Get ready for sun and sand in San Diego... Read
1 Mar 12 - IBM Data Management - Running Informix on Solid-State Drives.Speed Up Database Access... Read
26 Feb 12 - BernieSpan.com - Better results, lower cost for a broad set of new IBM clients and partners... Read
24 Feb 12 - developerWorks - Informix Warehouse Accelerator: Continuous Acceleration during Data Refresh... Read
6 Feb 12 - PRLOG - Informix port delivers unlimited database scalability for popular SaaS application ... Read
2 Feb 12 - developerWorks - Loading data with the IBM Informix TimeSeries Plug-in for Data Studio... Read
1 Feb 12 - developerWorks - 100 Tech Tips, #47: Log-in to Fix Central... Read
13 Jan 12 - MC Press online - Informix Dynamic Server Entices New Users with Free Production Edition ... Read
11 Jan 12 - Computerworld - Ecologic Analytics and Landis+Gyr -- Suitors Decide to Tie the Knot... Read
9 Jan 12 - planetIDS.com - DNS impact on Informix / Impacto do DNS no Informix... Read
8 Sep 11 - TMCnet.com - IBM Offers Database Solution to Enable Smart Meter Data Capture... Read
1 Aug 11 - IBM Data Management Magazine - IIUG user view: Happy 10th anniversary to IBM and Informix... Read
8 Jul 11 - Database Trends and Applications - Managing Time Series Data with Informix... Read
31 May 11 - Smart Grid - The meter data management pitfall utilities are overlooking... Read
27 May 11 - IBM Data Management Magazine - IIUG user view: Big data, big time ( Series data, warehouse acceleration, and 4GLs )... Read
16 May 11 - Business Wire - HiT Software Announces DBMoto for Enterprise Integration, Adds Informix. Log-based Change Data Capture... Read
21 Mar 11 - Yahoo! Finance - IBM and Cable&Wireless Worldwide Announce UK Smart Energy Cloud... Read
14 Mar 11 - MarketWatch - Fuzzy Logix and IBM Unveil In-Database Analytics for IBM Informix... Read
11 Mar 11 - InvestorPlace - It's Time to Give IBM Props: How many tech stocks are up 53% since the dot-com boom?... Read
9 Mar 11 - DBTA - Database Administration and the Goal of Diminishing Downtime... Read
2 Feb 11 - DBTAs - Informix 11.7 Flexible Grid Provides a Different Way of Looking at Database Servers... Read
27 Jan 11 - exactsolutions - Exact to Add Informix Support to Database Replay, SQL Monitoring Solutions... Read
25 Jan 11 - PR Newswire - Bank of China in the UK Works With IBM to Become a Smarter, Greener Bank... Read
12 Oct 10 - Database Trends and Applications - Informix 11.7: The Beginning of the Next Decade of IBM Informix... Read
20 Sep 10 - planetIDS.com - ITG analyst paper: Cost/Benefit case for IBM Informix as compared to Microsoft SQL Server... Read
20 Jul 10 - IBM Announcements - IBM Informix Choice Edition V11.50 helps deploy low-cost scalable and reliable solutions for Apple Macintosh and Microsoft Windows... Read
20 Jul 10 - IBM Announcements - Software withdrawal: Elite Support for Informix Ultimate-C Edition... Read
24 May 10 - eWeek Europe - IBM Supplies Database Tech For EU Smart Grid... Read
23 May 10 - SiliconIndia - IBM's smart metering system allows wise use of energy... Read
21 May 10 - CNET - IBM to help people monitor energy use... Read
20 May 10 - ebiz - IBM Teams With Hildebrand To Bring Smart Metering To Homes Across Britain... Read
19 May 10 - The New Blog Times - Misurare il consumo energetico: DEHEMS è pronto... Read
19 May 10 - ZDNet - IBM software in your home? Pact enables five-city smart meter pilot in Europe... Read
17 March 10 - ZDNet (blog) David Morgenstern - TCO: New research finds Macs in the enterprise easier, cheaper to manage than... Read
17 March 2010 - Virtualization Review - ...key components of Big Blue's platform to the commercial cloud such as its WebSphere suite of application ser vers and its DB2 and Informix databases... Read
10 February 2010 - The Wall Street Journal - International Business Machines is expanding an initiative to win over students and professors on its products. How do they lure the college crowd?... Read

End of Support Dates
IDS 11.10 - 30 Sep 2012
Subscribe to notifications

IIUG on Facebook IIUG on Twitter

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum

Re: Threat : swth:sbt_subclass_lpgsrc_ol_796

Posted By: Alberto Romeu Pessonio Filho
Date: Wednesday, 1 November 2017, at 9:07 a.m.

In Response To: Threat : swth:sbt_subclass_lpgsrc_ol_796 (LEY PATRICK)

Hi Ley!

Probably you're facing a kind of memeory bottleneck.

I had a similar issue related to memory contention on my environment (that
was shown through onstat -g wmx) and it lead to a defect. Also, I had many
other memory contention issues during my IBM journey on huge customer.

The following steps were used to track this issue:

1- When you have a "memory" thread showed on "onstat -g act/ onstat -g rea"
outputs, check the mutexes info from "onstat -g lmx/onstat -g wmx"

Im my case(RR_ID hash), the contention happened on routine resolution cache:

[informix@valencia01 ~]$ onstat -g wmx IBM Informix Dynamic Server Version
12.10.FC5X2 -- On-Line (Prim) -- Up 21 days 04:48:56 -- 25811176 Kbytes
Mutexes with waiters: mid addr name holder lkcnt waiter waittime 9950
6207faa8 RR_ID hash 396 117437832 0 117437835 0 117437850 0 117432874 0
117437843 0 117386806 0 117417336 0 117437838 0 117437847 0 117437837 0
117437844 0 117437851 0 117437829 0 117437836 0 117386802 0 117432841 0
117432878 0 117432861 0 Number of mutexes on VP 1 free list: 127929 Number
of mutexes on VP 2 free list: 0 Number of mutexes on VP 3 free list: 0
Number of mutexes on VP 4 free list: 0 Number of mutexes on VP 5 free list:
0 Number of mutexes on VP 6 free list: 0 Number of mutexes on VP 7 free
list: 0 Number of mutexes on VP 8 free list: 0 Number of mutexes on VP 9
free list: 127986 Number of mutexes on VP 10 free list: 127990 Number of
mutexes on VP 11 free list: 127994 Number of mutexes on VP 12 free list:
127836 Number of mutexes on VP 13 free list: 127993 Number of mutexes on VP
14 free list: 127997 Number of mutexes on VP 15 free list: 127999 Number of
mutexes on VP 16 free list: 127997 Number of mutexes on VP 17 free list:
127966 Number of mutexes on VP 18 free list: 127979 Number of mutexes on VP
19 free list: 127978 Number of mutexes on VP 20 free list: 127997 Number of
mutexes on VP 21 free list: 128000 Number of mutexes on VP 22 free list:
127982 Number of mutexes on VP 23 free list: 0 Number of mutexes on VP 24
free list: 0 Number of mutexes on VP 25 free list: 0 Number of mutexes on
VP 26 free list: 0 Number of mutexes on VP 27 free list: 0 Number of
mutexes on VP 28 free list: 0 Number of mutexes on VP 29 free list: 0
Number of mutexes on VP 30 free list: 0 Number of mutexes on VP 31 free
list: 0 Number of mutexes on VP 32 free list: 0

In this case, we can see a "mutex id" thread locking a memory resource, and
several threads are waiting to acquire that resource.

I can't be sure if it is related to large pages... Did you export
IFX_LARGE_PAGES when you started IDS after enable it at OS level?

1 - In order to get more information from the issue you're facing, look at
those outputs, and share what you think that is strange. I can support you
properly if you share it, as well.

- onconfig,
- onstat -g env
- onstat -g spi|head -n 6;onstat -g spi| sort -r -n -k 1|head -n 50
*- onstat -g con |head -n 50*
*- onstat -g lmx *
*- onstat -g wmx*
- onstat -g vpcache
- onstat -g glo
- onstat -g sch
- onstat -g scn
- some samples of vmstat or lparstat
- some samples of onstat -g stk from those thread ID (
swth:sbt_subclass_lpgsrc_ol_*)

Those output highlighted above gonna show useful info.

2 - Have you increased hardware threads/virtual cores/Entlited Capacity on
your AIX, when you enabled large pages? What is the AIX version?

3 - Some useful info to collect from AIX OS:
http://www.unixmantra.com/2013/09/aix-listing-cpu-memory-ram-harddisks-ip-address.html

Regards,
Alberto.

2017-10-31 22:19 GMT-02:00 LEY PATRICK <patrickley@gmail.com>:

> Platform : AIX 7
> Informix version: 11.70.FC7W3XC
> Config : 1 primary, 1 secondary and 4 RSS
>
> Note : We do turn on the large page on AIX level
>
> I run onstat -g rea -r 1 and occasionally see the threat name
> swth:sbt_subclass_lpgsrc_ol_796
>
> Questions:
> 1) What is this thread and the purpose of this threat?
> 2) Is this threat related to Large Page ?
>
> Snip of onstat -g rea -r 1
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:00 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 170cpu* memory
>
> [informix@obnfrmxdb01p2] /home/informix #onstat -g rea -r 1
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:04 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 21cpu* memory
> 31110 70000500a4d17f0 7000047f8046428 1 ready 22cpu sqlexec
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:05 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:06 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 63 7000047ae1814c0 0 2 ready 9cpu* soctcplst
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 239cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:07 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 20cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:08 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 172cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:09 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:10 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 115cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:11 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 115cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:12 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 220cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:13 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:14 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 131cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:15 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 230cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:16 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2323 7000047fd7f71e8 7000047f429afe8 3 ready 9cpu smxrcv sbdardbi02_tcp
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:17 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 177cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:18 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 284cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:19 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 97163 700004d3352c630 70000506246a4a8 1 ready 16cpu sqlexec
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:20 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 143cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:21 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 182cpu* memory
> 2357 7000047fd2c1c58 7000047f42944a8 3 ready 21cpu RSS_Send_sbdardbi01_tcp
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:22 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 173cpu* memory
> 4114 700004883b57028 70000487dfd6c28 1 ready 36cpu sqlexec
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:23 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 8cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:24 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 21cpu* memory
> 48019 7000055d7505220 7000050624683a8 3 ready 21cpu readahead_6
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:25 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 186cpu* memory
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:26 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 3955 700004874c08a48 7000048699f66a8 1 ready 16cpu sqlexec
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:27 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 1cpu* memory
> 2327 7000048048b45e0 7000047f429d0e8 3 ready 1cpu RSS_Send_sbdardbi02_tcp
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:28 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 79599 700005ca76912b0 70000488420e368 2 ready 179cpu* sqlexec
> 81457 700005c4d1e4370 700005931acd3a8 1 ready 30cpu
> swth:sbt_subclass_lpgsrc_ol_796
> 81489 70000582c5c9d20 7000056dd5f3428 1 ready 28cpu
> swth:sbt_subclass_lpgsrc_ol_796
> 81576 700005cac602028 700005cf5871768 1 ready 28cpu
> swth:sbt_subclass_lpgsrc_ol_797
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:29 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 193cpu* memory
> 81489 70000582c5c9d20 7000056dd5f3428 1 ready 28cpu
> swth:sbt_subclass_lpgsrc_ol_796
> 97162 700005a43d042b0 700004956f71328 2 ready 308cpu* sqlexec
>
> IBM Informix Dynamic Server Version 11.70.FC7W3XC -- On-Line (Prim) -- Up
> 05:20:30 -- 521929792 Kbytes
>
> Ready threads:
> tid tcb rstcb prty status vp-class name
> 59 7000047ae10dbb0 0 2 ready 8cpu* soctcplst
> 2034 7000047fbeb7790 7000047a307a4e8 3 ready 9cpu* memory
>
> [informix@obnfrmxdb01p2] /home/informix #uname -a
> AIX obnfrmxdb01p2 1 7 00CCBC174C00
>
> All input are welcome.
>
>
> ************************************************************
> *******************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

Messages In This Thread

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum is maintained by Administrator with WebBBS 5.12.