Benjamin Smith writes:
> So far, searching has found intel-cmt-cat-master which isn't supported
on our
> CPU and oprofile which *sounds* like it does what I want from their
website but
> I can't seem to get output that, in any way, tells me what the bandwidth
usage
> is.
>
>
Hello,
Try to install collectd and check the metrics for ram.
Best regards,
El dia 03/02/2016 2:51 a. m., "John R Pierce" va
escriure:
> On 2/2/2016 5:34 PM, Benjamin Smith wrote:
>
>> I'd like to know what the cause of a particular DB server's slowdown
>> might be.
>>
On Tue, Feb 2, 2016 at 7:34 PM, Gordon Messmer wrote:
> On 02/02/2016 05:34 PM, Benjamin Smith wrote:
>>
>> We've ruled out IOPs for the disks (~ 20%)
>
>
> How did you measure that? What filesystem are you using? What is the disk
> / array configuration?
> Which
I'd like to know what the cause of a particular DB server's slowdown might be.
We've ruled out IOPs for the disks (~ 20%) and raw CPU load (top shows perhaps
1/2 of cores busy, but the system slows to a crawl.
We're suspecting that we're simply running out of memory bandwidth but have no
way
On 2/2/2016 5:34 PM, Benjamin Smith wrote:
I'd like to know what the cause of a particular DB server's slowdown might be.
We've ruled out IOPs for the disks (~ 20%) and raw CPU load (top shows perhaps
1/2 of cores busy, but the system slows to a crawl.
We're suspecting that we're simply running
On 02/02/2016 05:34 PM, Benjamin Smith wrote:
We've ruled out IOPs for the disks (~ 20%)
How did you measure that? What filesystem are you using? What is the
disk / array configuration?
Which database?
If you run "iostat -x 2" what does a representative summary look like?
and raw CPU
On Tue, 2 Feb 2016 at 20:34 -, Benjamin Smith wrote:
> Any idea?
Wild guessing...How old a system? ~5 year old Nehalem? If so try:
echo 0 > /proc/sys/vm/zone_reclaim_mode
For some memory performance diagnosing try 'sar':
sar -B 10
There are lots of other sar options which might
7 matches
Mail list logo