Hi,
I am working on an application which I previously tested on Centos6.6 and
now after compiling same application on centos7.3.1611 and running I am
observing a high load average. load avg with centos 6.6 remained to be 1.5
in same test where it remains >4.5 in centos 7.3.1611. The application us
On Thu, 27 Mar 2014 17:20:22 -0500
Matt Garman wrote:
> Any thoughts or ideas?
Start digging into your array. Perhaps you're starting to lose a drive and it's
running daily integrity checks or
something. ie, dropping in and out of the array or the like.. /var/log/messages
might have some clues
Am 28.03.2014 um 15:30 schrieb Matt Garman :
> On Fri, Mar 28, 2014 at 9:01 AM, Mr Queue wrote:
>
>> On Thu, 27 Mar 2014 17:20:22 -0500
>> Matt Garman wrote:
>>
>>> Anyone seen anything like this? Any thoughts or ideas?
>>
>> Post some data.. This public facing? Are you getting sprayed down b
On Thu, 27 Mar 2014 17:20:22 -0500
Matt Garman wrote:
> Anyone seen anything like this? Any thoughts or ideas?
Post some data.. This public facing? Are you getting sprayed down by packets?
Array? Soft/hard? Someone have screens
laying around? Write a trap to catch a process list when the loads
On Fri, Mar 28, 2014 at 9:37 AM, John R. Dennison wrote:
>
> On Fri, Mar 28, 2014 at 09:30:17AM -0500, Matt Garman wrote:
> >
> > How can the loadavg shoot up (from ~1 to ~20) without a corresponding
> > uptick in number of tasks?
>
> loadavg is based on number of processes vying for cpu time on t
From: Matt Garman
> I did a little research on the loadavg number, and my understanding is that
> it's simply a function of the number of tasks on the system. (There's
> some fancy stuff thrown in for exponential decay and curve smoothing and
> all that, but it's still based on the number of s
On Fri, Mar 28, 2014 at 10:30 AM, John Doe wrote:
> Any USB device?
> Each time I access USB disks, load goes through the roof.
Nope, it's a rack server in a secure remote location, with no
peripherals at all attached. Only attached cables are power and
network.
_
On Fri, Mar 28, 2014 at 9:01 AM, Mr Queue wrote:
> On Thu, 27 Mar 2014 17:20:22 -0500
> Matt Garman wrote:
>
> > Anyone seen anything like this? Any thoughts or ideas?
>
> Post some data.. This public facing? Are you getting sprayed down by
> packets? Array? Soft/hard? Someone have screens
> la
On Fri, Mar 28, 2014 at 09:30:17AM -0500, Matt Garman wrote:
>
> How can the loadavg shoot up (from ~1 to ~20) without a corresponding
> uptick in number of tasks?
loadavg is based on number of processes vying for cpu time on the runq; the
number of over-all processes on the system is not really
On 2014-03-27, Miranda Hawarden-Ogata wrote:
> On 2014/03/27 12:20, Matt Garman wrote:
>> Anyone seen anything like this? Any thoughts or ideas?
>
> Something of a shot in the dark, but when we had a server with a high
> load average where nothing obvious was causing it, it turned out to be
> m
On 2014/03/27 12:20, Matt Garman wrote:
> Anyone seen anything like this? Any thoughts or ideas?
>
> Thanks,
> Matt
Something of a shot in the dark, but when we had a server with a high
load average where nothing obvious was causing it, it turned out to be
multiple df cmds hanging on a stale nf
I have a dual Xeon 5130 (four total CPUs) server running CentOS 5.7.
Approximately every 17 hours, the load on this server slowly creeps up
until it hits 20, then slowly goes back down.
The most recent example started around 2:00am this morning. Outside of
these weird times, the load never excee
On 25/04/2012 07:09, Kaushal Shriyan wrote:
> Hi
>
> Is there a way to nail down the issue of high load on a server basically
> trying to understand the reason behind high load at a specific time period.
> I use top command but it does not have history.
>
> Nagios reports saying "*[04-25-2012 10:
On 27/04/2012 02:18, Lists wrote:
> Problem isn't so much actual "speed" but causing network monitors to
> freak out due to "high" load average
> when performing backups. I can make exceptions for servers doing
> backups, but then I don't get notifications when
> the load is legitimately high. I
On Thu, Apr 26, 2012 at 8:18 PM, Lists wrote:
> >
> Problem isn't so much actual "speed" but causing network monitors to
> freak out due to "high" load average
> when performing backups.
So don't plug the USB into the server. Put them on some other machine
and run the backup over the network.
On Thu, Apr 26, 2012 at 10:18 PM, Lists wrote:
> On 04/20/2012 05:24 AM, Giovanni Tirloni wrote:
> > On Apr 20, 2012 2:42 AM, "Lists" wrote:
> >> Problem as follows:
> >>
> >> 1) Plug in an external USB drive.
> >>
> >> 2) Mount it anywhere. Doesn't matter how.
> >>
> >> 3) Copy a few GB of data
On 04/20/2012 05:24 AM, Giovanni Tirloni wrote:
> On Apr 20, 2012 2:42 AM, "Lists" wrote:
>> Problem as follows:
>>
>> 1) Plug in an external USB drive.
>>
>> 2) Mount it anywhere. Doesn't matter how.
>>
>> 3) Copy a few GB of data to the drive from a non-USB disk.
>>
>> 4) Watch the load average
From: Kaushal Shriyan
> Is there a way to nail down the issue of high load on a server basically
> trying to understand the reason behind high load at a specific time period.
> I use top command but it does not have history.
Maybe adapt something like this to your needs:
while :; do LOAD=`cat /p
On 25 April 2012 07:09, Kaushal Shriyan wrote:
> Is there a way to nail down the issue of high load on a server basically
> trying to understand the reason behind high load at a specific time period.
> I use top command but it does not have history.
Among many other solutions, my favourite is nmon
Hi
Is there a way to nail down the issue of high load on a server basically
trying to understand the reason behind high load at a specific time period.
I use top command but it does not have history.
Nagios reports saying "*[04-25-2012 10:11:00] SERVICE ALERT:
dev;LOAD;WARNING;HARD;3;WARNING - lo
On Friday, April 20, 2012 10:54:51 AM Les Mikesell wrote:
> The CPU has to do the work of the transfer over usb - which is why it
> is cheap. Real disk controllers use DMA without a lot of CPU
> involvement.
And this includes USB 3.0, incidentally. I have found that on my Fedora 14
(soon to be
On Fri, Apr 20, 2012 at 12:42 AM, Lists wrote:
> Problem as follows:
>
> 1) Plug in an external USB drive.
>
> 2) Mount it anywhere. Doesn't matter how.
>
> 3) Copy a few GB of data to the drive from a non-USB disk.
>
> 4) Watch the load average "climb" to 5.x, sometimes 10.x or more. Why?
> This
On Apr 20, 2012 2:42 AM, "Lists" wrote:
>
> Problem as follows:
>
> 1) Plug in an external USB drive.
>
> 2) Mount it anywhere. Doesn't matter how.
>
> 3) Copy a few GB of data to the drive from a non-USB disk.
>
> 4) Watch the load average "climb" to 5.x, sometimes 10.x or more. Why?
> This on an
Problem as follows:
1) Plug in an external USB drive.
2) Mount it anywhere. Doesn't matter how.
3) Copy a few GB of data to the drive from a non-USB disk.
4) Watch the load average "climb" to 5.x, sometimes 10.x or more. Why?
This on an otherwise unloaded system. Doesn't matter how many cores,
- Original Message
> From: "fortin.pie...@bell.ca"
> To: centos@centos.org
> Sent: Thu, January 14, 2010 5:47:43 PM
> Subject: Re: [CentOS] High load since passing from rhas3 to centos4.8
>
>
>
> The purpose of the server is to run NMS Telephony
On Thu, 2010-01-14 at 15:47 -0500, fortin.pie...@bell.ca wrote:
> > We are migrating HP servers from RHAS3 to centos 4.8. Since, the load
> > average is reaching really high values. Under usage we see loads of
> > 15-20 instead of the 0.5-1.5 we were used to.
> >
> > I searched a lot for informati
On Thu, Jan 14, 2010 at 3:02 PM, wrote:
>>Are you by any chance now running a CPU throttling program and weren't
>>>before?
>
> ACPI is not enabled. Other than that I couldn't tell. Sorry if it sounds noob.
> What can I check to be sure nothing is throttling the CPU?
>
Check if you're running c
> We are migrating HP servers from RHAS3 to centos 4.8. Since, the load
> average is reaching really high values. Under usage we see loads of
> 15-20 instead of the 0.5-1.5 we were used to.
>
> I searched a lot for information on such an issue. Iostat, vmstat, top,
> ps. But I don't get significan
On 1/14/2010 1:12 PM, fortin.pie...@bell.ca wrote:
> We are migrating HP servers from RHAS3 to centos 4.8. Since, the load
> average is reaching really high values. Under usage we see loads of
> 15-20 instead of the 0.5-1.5 we were used to.
>
> I searched a lot for information on such an issue. Ios
>> We are migrating HP servers from RHAS3 to centos 4.8. Since, the load
>> average is reaching really high values. Under usage we see loads of 15-20
>> instead of the 0.5-1.5 we were used to.
>>
>> I searched a lot for information on such an issue. Iostat, vmstat, top, ps.
>> But I don't get signi
On Thu, Jan 14, 2010 at 2:12 PM, wrote:
> We are migrating HP servers from RHAS3 to centos 4.8. Since, the load
> average is reaching really high values. Under usage we see loads of 15-20
> instead of the 0.5-1.5 we were used to.
>
> I searched a lot for information on such an issue. Iostat, vmst
We are migrating HP servers from RHAS3 to centos 4.8. Since, the load average
is reaching really high values. Under usage we see loads of 15-20 instead of
the 0.5-1.5 we were used to.
I searched a lot for information on such an issue. Iostat, vmstat, top, ps. But
I don't get significant hint.
Cp
Benjamin Smith wrote, On 11/18/2009 06:11 PM:
> On Tuesday 17 November 2009 15:37:24 Todd Denniston wrote:
>> Benjamin Smith wrote, On 11/17/2009 01:46 PM:
>>> See comments below...
>>>
>>> On Tuesday 17 November 2009 07:52:01 Todd Denniston wrote:
Benjamin Smith wrote, On 11/16/2009 10:56 PM:
Sorry can't suggest much about the usb issue but for such frequent
backups, as well as to enable poin-in-time-recovery (PITR) you should
consider log archiving. It should also save you heaps of load on cpu,
disk, network and postgresql server.
-Amos
On 11/17/09, Benjamin Smith wrote:
> I'm havin
On Tuesday 17 November 2009 15:37:24 Todd Denniston wrote:
> Benjamin Smith wrote, On 11/17/2009 01:46 PM:
> > See comments below...
> >
> > On Tuesday 17 November 2009 07:52:01 Todd Denniston wrote:
> >> Benjamin Smith wrote, On 11/16/2009 10:56 PM:
> >>> I have a 1TB USB drive plugged into a USB2
Benjamin Smith wrote, On 11/17/2009 01:46 PM:
> See comments below...
>
> On Tuesday 17 November 2009 07:52:01 Todd Denniston wrote:
>> Benjamin Smith wrote, On 11/16/2009 10:56 PM:
>>> I have a 1TB USB drive plugged into a USB2 port that I use to back up the
>>> production drives (which are SCSI
See comments below...
On Tuesday 17 November 2009 07:52:01 Todd Denniston wrote:
> Benjamin Smith wrote, On 11/16/2009 10:56 PM:
> > I have a 1TB USB drive plugged into a USB2 port that I use to back up the
> > production drives (which are SCSI). It's working fine, but while doing
> > backups (ho
Benjamin Smith wrote, On 11/16/2009 10:56 PM:
> I have a 1TB USB drive plugged into a USB2 port that I use to back up the
> production drives (which are SCSI). It's working fine, but while doing
> backups
> (hourly) the load average on the server shoots up from the normal 0.5 - 1.5
> or
> so u
I'm having a server report a high load average when backing up Postgres
database files to an external USB drive. This is driving my loadbalancers all
out of kilter and causing a large volume of network monitor alerts.
I have a 1TB USB drive plugged into a USB2 port that I use to back up the
pr
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