Checking for kernel lock contention in OEL 5.5

Is there a lockstat utility for Enterprise Linux 5? Or how could I check for kernel lock contention?
I found a lockstat rpm for RHEL and Centos 4 at http://packages.sw.be/lockstat/, but I could not find it in the distribution of version 5?
The rpm package installs, but the command "lockstat on" shows /proc/lockmeter: No such file or directory
I found an interesting document named "Linux Kernel Lock Profiling with LockStat" at:
http://dolavim.us/blog/2007/11/06/linux-kernel-lock-profiling-with-lockstat/
The document outlines the use of /proc/lock_stat, which is a text file - not using a "lockstat" utility.
From what I understand, I have to rebuild the kernel with "CONFIG_LOCK_STAT=y", or wait for kernel 2.6.24 to be released?
Do I have to build a custom kernel to check for lock contention, or are there perhaps other options?
Thanks!
Edited by: Markus Waldorf on Aug 28, 2010 8:55 PM

SQL> SELECT INDEX_NAME,INDEX_TYPE,UNIQUENESS FROM DBA_INDEXES WHERE TABLE_NAME='DATA_DATA';
INDEX_NAME INDEX_TYPE UNIQUENES
CIDX BITMAP NONUNIQUE
VIDX BITMAP NONUNIQUEYou have bitmap indexes here on a table being inserted into. Bitmap Indexes are another source of lock(and deadlock) in OLTP application. You said that the SQLloader was the unique active program but may be you are also triggering another procedure after the load. Procedure in which you might be using also automomous transactions and so on...
Check first if your table is subject to DML operation in a a multi-user concurrent accesss and in which case you have to get rid of those bitmap indexes
http://hourim.wordpress.com/2011/03/14/deadlock-%e2%80%93-part-1-bitmap-index/
Best regards
Mohamed Houri
www.hourim.wordpress.com

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We have deployed a new Version of our Software on the test-system of our customer.
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SQL ID: Plan Hash: 3934983510
SELECT ts.message_id_t235
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call     count       cpu    elapsed       disk      query    current        rows
======= ====== ======== ========== ========== ========== ========== ==========
Parse        0      0.00       0.00          0          0          0           0
Execute      8      0.01     *137.55*          0          8          5           0
Fetch        8      0.00       0.00          0         60          0           8
======= ====== ======== ========== ========== ========== ========== ==========
total       16      0.01     137.55          0         68          5           8
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Parsing user id: 90     (recursive depth: 1)
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========================================   Waited ========== ============
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********************************************************************************As you can see the statement is very primitive. The Tables used are very huge (100M+ Rows) but have no bitmap indexes. How can this statement wait on enq: TX = row lock contention?
Thanks in advance!
Best regards,
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Edited by: user12182396 on Feb 4, 2011 5:43 AM
Edited by: user12182396 on Feb 4, 2011 6:02 AM

user12182396 wrote:
We have deployed a new Version of our Software on the test-system of our customer.
While the software runs fine on our Systems (Oracle EE 10.2.0.4 as well as Oracle EE 11.2.0.2 on EL 5.4 x86_64) it runs sluggish on our Customer's system (Oracle EE 10.2.0.4 on Solaris 10 x64).
During analysis of the problem I came across this:
SQL ID: Plan Hash: 3934983510
SELECT ts.message_id_t235
FROM t235_time_series ts,
t238_timeseries_reported tsr
WHERE ts.time_series_id_t235 = tsr.timeseries_id_t238
AND tsr.message_id_t238 = :b2
AND ts.current_state_t235 = :b1
AND ROWNUM = 1
call     count       cpu    elapsed       disk      query    current        rows
======= ====== ======== ========== ========== ========== ========== ==========
Parse        0      0.00       0.00          0          0          0           0
Execute      8      0.01     *137.55*          0          8          5           0
Fetch        8      0.00       0.00          0         60          0           8
======= ====== ======== ========== ========== ========== ========== ==========
total       16      0.01     137.55          0         68          5           8
Misses in library cache during parse: 0
Optimizer mode: CHOOSE
Parsing user id: 90     (recursive depth: 1)
Elapsed times include waiting on following events:
Event waited on                             Times   Max. Wait Total Waited
========================================   Waited ========== ============
*enq:* *TX* *=* *row* *lock* *contention*                 281        0.64        *137.01*
******************************************************************************** As you can see the statement is very primitive. The Tables used are very huge (100M+ Rows) but have no bitmap indexes. How can this statement wait on enq: TX = row lock contention?
Are either of these tables subject to distributed transactions through database links ? If so then it is possible for a select statement to wait on a TX enqueue in mode 4 if it's trying to read a block which is subject to change by another tranaction that is stuck between the PREPARE and COMMIT phases of a "2 phase commit".
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If this is the problem then it's generally indicative of a networking problem of some sort - possibly simple congestion because of excess traffic.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
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Brian
Below is from using a SIP build. It does offer G722, but it's way down on the list so it's never used...
m=audio 32678 RTP/AVP 0 8 18 102 9 116 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:102 L16/16000
a=rtpmap:9 G722/8000
a=rtpmap:116 iLBC/8000
a=fmtp:116 mode=20
a=rtpmap:101 telephone-event/8000
Taking Sreekanth's suggestion to try a Skinny build, I get the following when I make a call. It offers codecs in the order I SET THEM AND ONLY THE CODECS I SET! YAY!
m=audio 19374 RTP/AVP 9 0 101
a=rtpmap:9 G722/8000
a=fmtp:9 bitrate=64
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
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HI
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the RBS maintainer was run from one of web front end server And for one content database , that fine
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Now I did not found this Maintainer running in windows task scheduler, but blobs are decreasing from content database RBS storage folder, and　 also I found this maintainer running I checked from when　 run sql queriy in 　sql
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Checking for kernel lock contention in OEL 5.5

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