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Full Discussion: Bad performance but Low CPU loading?
Operating Systems HP-UX Bad performance but Low CPU loading? Post 302411157 by GreenShery on Wednesday 7th of April 2010 08:58:49 PM
Old 04-07-2010
Bad performance but Low CPU loading?
There might be some problem with my server,
because every morning at 7, it's performance become bad with no DB extra deadlock.
But I just couldn't figure it out.
Please give me some advise, thanks a lot...

According to the CPU performace chart, Daily CPU loading Maximum: 42 %, Average:36%.

But I have a serious Report Delay for almost half hour.

Here is the "TOP", at the same time but the next day I collect.

Code:
Load averages: 9.60, 9.80, 6.67
682 processes: 626 sleeping, 56 running
Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 7.23 44.5% 24.0% 22.0% 9.4% 0.0% 0.0% 0.0% 0.0%
1 11.97 38.7% 29.6% 21.3% 10.5% 0.0% 0.0% 0.0% 0.0%
--- ---- ----- ----- ----- ----- ----- ----- ----- -----
avg 9.60 41.6% 26.8% 21.7% 9.9% 0.0% 0.0% 0.0% 0.0%
Memory: 628612K (144072K) real, 338672K (92712K) virtual, 2251204K free Page# 1/22
CPU TTY PID USERNAME PRI NI SIZE RES STATE TIME %WCPU %CPU COMMAND
0 ? 29917 UserA 245 22 4868K 532K run 0:04 14.44 11.38 REPORT_A
0 ? 19416 UserB 241 20 5740K 732K run 0:20 11.11 11.09 REPORT_C
0 ? 29772 UserA 245 22 4804K 464K run 0:03 11.81 9.43 REPORT_B
0 ? 1411 root -16 20 28128K 5736K run 365:05 5.09 5.08 midaemon
1 ? 26114 UserB 203 20 5224K 604K run 0:06 2.46 2.45 REPORT_F
0 ? 29539 UserB 191 20 5136K 516K run 0:00 2.42 2.21 REPORT_G
0 ? 18222 UserA 217 22 5708K 728K run 0:15 1.98 1.98 REPORT_C
0 ? 23358 UserA 216 22 5708K 736K run 0:08 1.94 1.93 REPORT_C_b
0 ? 28030 UserB 197 20 5136K 516K run 0:04 1.92 1.92 REPORT_G
0 ? 28263 UserB 194 20 5136K 516K run 0:04 1.92 1.92 REPORT_G
1 ? 23417 UserA 154 22 5708K 728K sleep 0:08 1.85 1.85 REPORT_C_b
0 ? 33 root 152 20 1856K 0K run 54:44 1.79 1.79 vxfsd
0 ? 23381 UserA 216 22 5708K 728K run 0:08 1.77 1.77 REPORT_C_b
0 ? 23361 UserA 214 22 5708K 728K run 0:07 1.76 1.76 REPORT_C
0 ? 29696 UserB 192 20 5136K 516K run 0:00 2.11 1.72 REPORT_G
0 ? 23415 UserA 215 22 5708K 728K run 0:08 1.72 1.72 REPORT_C_b
0 ? 25207 UserB 189 20 5140K 536K run 0:07 1.72 1.72 REPORT_D
0 ? 27030 UserB 188 20 4808K 488K run 0:04 1.70 1.70 REPORT_E
0 ? 25729 UserB 189 20 5140K 536K run 0:06 1.70 1.70 REPORT_D
0 ? 29471 UserB 189 20 4808K 488K run 0:00 1.77 1.68 REPORT_E
0 ? 25571 UserB 191 20 5140K 536K run 0:06 1.66 1.66 REPORT_D
0 ? 24909 UserB 188 20 5140K 536K run 0:07 1.66 1.66 REPORT_D
0 ? 25127 UserB 190 20 5140K 536K run 0:06 1.65 1.65 REPORT_D
0 ? 26399 UserB 188 20 4864K 540K run 0:04 1.65 1.65 REPORT_Z
0 ? 26532 UserB 154 20 4808K 488K sleep 0:04 1.65 1.65 REPORT_E
0 ? 26177 UserB 189 20 4864K 540K run 0:05 1.65 1.64 REPORT_Z
0 ? 23478 UserA 217 22 4840K 540K run 0:07 1.64 1.64 REPORT_E
0 ? 23350 UserA 213 22 5708K 728K run 0:07 1.63 1.63 REPORT_C
0 ? 28311 UserB 190 20 4808K 488K run 0:03 1.63 1.62 REPORT_E
0 ? 25255 UserB 188 20 5140K 536K run 0:06 1.62 1.62 REPORT_D
0 ? 26355 UserB 189 20 4864K 540K run 0:04 1.62 1.62 REPORT_Z

Last edited by pludi; 04-08-2010 at 01:54 AM..
 

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LEARN ABOUT FREEBSD

pmccontrol

PMCCONTROL(8)						    BSD System Manager's Manual 					     PMCCONTROL(8)

NAME

     pmccontrol -- control hardware performance monitoring counters

SYNOPSIS

     pmccontrol [-c cpu | -d pmc | -e pmc] ...
     pmccontrol -l
     pmccontrol -L
     pmccontrol -s

DESCRIPTION

     The pmccontrol utility controls the operation of the system's hardware performance monitoring counters.

OPTIONS

     The pmccontrol utility processes options in command line order, so later options modify the effect of earlier ones.  The following options
     are available:

     -c cpu  Subsequent enable and disable options affect the CPU denoted by argument cpu.  The argument cpu is a number denoting a CPU in the
	     system, or ``*'', denoting all unhalted CPUs in the system.

     -d pmc  Disable PMC number pmc on the CPU specified by -c, preventing it from being used till subsequently re-enabled.  The argument pmc is a
	     number denoting a specific PMC, or ``*'' denoting all the PMCs on the specified CPU.

	     Only idle PMCs may be disabled.

     -e pmc  Enable PMC number pmc, on the CPU specified by -c, allowing it to be used in the future.  The argument pmc is a number denoting a
	     specific PMC, or ``*'' denoting all the PMCs on the specified CPU.  If PMC pmc is already enabled, this option has no effect.

     -l      List available hardware performance counters and their current disposition.

     -L      List available hardware performance counter classes and their supported event names.

     -s      Print driver statistics maintained by hwpmc(4).

EXAMPLES

     To disable all PMCs on all CPUs, use the command:
	   pmccontrol -d*

     To enable all PMCs on all CPUs, use:
	   pmccontrol -e*

     To disable PMCs 0 and 1 on CPU 2, use:
	   pmccontrol -c2 -d0 -d1

     To disable PMC 0 of CPU 0 only, and enable all other PMCS on all other CPUs, use:
	   pmccontrol -c* -e* -c0 -d0

DIAGNOSTICS

     The pmccontrol utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     pmc(3), pmclog(3), hwpmc(4), pmcstat(8), sysctl(8)

HISTORY

     The pmccontrol utility first appeared in FreeBSD 6.0.

AUTHORS

     Joseph Koshy <jkoshy@FreeBSD.org>

BSD
								 November 9, 2008							       BSD
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