Hi Strahil,
For the sake of completeness I am reporting back that your suspicions
seem to have been validated. I talked to the data center, they made
some changes. we talked again some days later, and they made some more
changes, and for several days now load average on both machines is
staying consistently below 5 on both servers. I still have some issues
to deal with, but the performance of the machines are now no longer a
problem.
I owe you a steak and a beer, at the least; I sincerely hope chance
allows me to pay up on that at some point in the future.
On 2020-08-21 12:02 a.m., Computerisms Corporation wrote:
Hi Strahil,
You can use 'virt-what' binary to find if and what type of
Virtualization is used.
cool, did not know about that. trouble server:
root@moogle:/# virt-what
hyperv
kvm
good server:
root@mooglian:/# virt-what
kvm
I have a suspicion you are ontop of Openstack (which uses CEPH), so I
guess you can try to get more info.
For example, an Openstack instance can have '0x1af4' in
'/sys/block/vdX/device/vendor' (replace X with actual device letter).
Another check could be:
/usr/lib/udev/scsi_id -g -u -d /dev/vda
This command returns no output on the bad server. Good server returns:
root@mooglian:/# /usr/lib/udev/scsi_id -g -u -d /dev/vda
-bash: /usr/lib/udev/scsi_id: No such file or directory
And also, you can try to take a look with smartctl from smartmontools
package:
smartctl -a /dev/vdX
Both servers return:
/dev/vda: Unable to detect device type
When I asked them about this earlier this week I was told the two
servers are identical, but I guess there is something different about
the server giving me trouble. I will go back to them and see what they
have to say. Thanks for pointing me at this...
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