Hi,
yes indeed, since I need I quick solution I try to identify if any
system performs kind of a throttling. Ceph FS serves as a secondary
storage which in turn is served by the NFS service. The download rate
drops significantly around 100GB and maintains ~100kbit/s before the
connection gets lost for almost 15 minutes.
What is interesting is that I currently download a large template
(1.2TB) this behaviour does not occur. So either there is a throttling
configuration which I cannot find, that shrinks every possible volume
download to 100GB or it has something to do with the System VM. Further,
If the download takes too long due to wget retries (~5-6h), the download
link disappears (404 Not Found).
I have created another system offering for Secstorage VM with more CPU
and RAM capabilities and I will try this again.
Best, Mevludin
Am 25.08.2025 um 05:19 schrieb Jayanth Reddy:
Hi,
I see that you've asked this on Ceph ML as well.
A few questions:
1. Where are you downloading this to? Is this a VM?
2. Please explain how CephFS is coming into the picture.
Like someone pointed out on Ceph ML, this may also be a server side issue.
Thanks
On Sun, Aug 24, 2025 at 4:18 PM Mevludin Blazevic <mejd...@yahoo.com.invalid>
wrote:
Hello all,
we are experiencing an issue where downloads are throttled to around
100GB with very slow performance, regardless of the available bandwidth.
My questions are:
- Is there a configuration setting in CloudStack that could be
responsible for throttling the download rate?
- Or is this behavior more likely related to CephFS?
Best, Mevludin
