Re: [qmailtoaster] Re: concerning server for qmailtoaster

Fri, 27 Nov 2009 08:22:23 -0800

Rajesh,

He is referring to an addition to cars that increase the horsepower with nitrous oxide injected into the intake.  This is a very popular way to increase performance in street cars and drag race cars.  See http://en.wikipedia.org/wiki/Nitrous   So he's saying that Jake's tweaks act like adding "nitrous".

Cheers,

CJ

Rajesh M wrote: 
hi eric

here is the SMART DATA as you wished to view.

Also forgive my ignorance but what exactly is a "nitrous" kit

thanks
rajesh


##################################
Location 	SCSI device C
Drive size 	232.88 GB
Make and model 	ATA WDC WD2500AAJS-0
Supports SMART? 	Yes
SMART enabled? 	Yes
Errors logged 	7934 errors detected
Passed drive check? 	Yes
Offline data collection status 	Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status 	The previous self-test completed having
the read element of the test failed.
Total time to complete Offline data collection 	4980 seconds.
Offline data collection capabilities 	SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities 	Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability 	Error logging supported.
General Purpose Logging supported.
Short self-test routine recommended polling time 	2 minutes.
Extended self-test routine recommended polling time 	61 minutes.
Conveyance self-test routine recommended polling time 	5 minutes.
Raw Read Error Rate 	0
Spin Up Time 	2250
Start Stop Count 	6
Reallocated Sector Ct 	0
Seek Error Rate 	0
Power On Hours 	11833
Spin Retry Count 	0
Calibration Retry Count 	0
Power Cycle Count 	6
Power-Off Retract Count 	5
Load Cycle Count 	6
Temperature Celsius 	34
Reallocated Event Count 	0
Current Pending Sector 	19
Offline Uncorrectable 	16
Multi Zone Error Rate 	0

#################################




  
Jake Vickers wrote:
    
Rajesh M wrote:
      
hello

i have a centos server
2 X dual core 1.6 ghz
with 4 gb ram
with around 4200 email boxes

i was facing problems of high load during office hours -- top command
used
display load ranging from 5 to 35.  I log server load every minute.

i increased ram from 4 gb to 8 gb and processor from 1.6 ghz to 2 ghz
but
However it did not make any significant change in the load.

Then i upgraded from the 250 gb sata drive to a 1 TB sata drive

there was a huge change in the load -- the load came down dramatically
it
is now between 1 - 2.5 even during peak working hours

what could be reasoning for this ?

is this related to disk i/o ?

        
I think you answered your own question there. The load dropped after you
changed the drive, so I think it would be safe to say that your drive
was introducing latency.
I also have some videos (http://video.qmailtoaster.com) that show some
tips on how to increase throughput on your system.


      
Right.

Do you still have the old drive? It might be interesting to check the
SMART data on it for indications of problems.

I also suspect that when your load was high that the cpu wait % was
rather high. Did you happen to notice cpu wait % at the time?

Everyone with a QMT that does any kind of volume should check out Jake's
tuning videos. The stock QMT is exactly that - stock. One of Jake's tips
in particular is like adding a "nitrous" kit to your QMT. Be sure to
check it out!

--
-Eric 'shubes'


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installations.
      If you need professional help with your setup, contact them today!
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---------------------------------------------------------------------------------
Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com)
    Vickers Consulting Group offers Qmailtoaster support and installations.
      If you need professional help with your setup, contact them today!
---------------------------------------------------------------------------------
     Please visit qmailtoaster.com for the latest news, updates, and packages.
     
      To unsubscribe, e-mail: [email protected]
     For additional commands, e-mail: [email protected]


  

-- 
Cecil Yother, Jr. "cj"
cj's
2318 Clement Ave
Alameda, CA  94501

tel 510.865.2787 | fax 510.864.7300
http://yother.com
--------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]

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