Comment 0 for bug 1361357
Revision history for this message
| Scott Moser (smoser) wrote metadata service performance regression ~100x | #0 |
© 2004
Canonical Ltd.
•
Terms of use
•
Data privacy
•
Contact Launchpad Support
•
Blog
•
Careers
•
System status
•
0f7b58d
(Get the code!)
The fix for bug 1325128 [1] included changes to the metadata service
seen at:
trunk [2]: 4a60c6a655006b2
icehouse [3]: 9f59ca751f1a392
The new code is around 100x slower. That slow down causes
excessive load on the metadata server if an instance crawls the metadata
service (which generates dozens of http requests).
Both cloud-init and cirros's boot code crawl that meta-data service. The
end result is linux instances boot time is dramatically affected. A
typical Ubuntu boot time will be < 10 seconds to executing user code, but
after this regression, I'm seeing boots in the range of 30 to 45 seconds.
--
[1] http://
[2] https:/
[3] https:/