Hi,
Intermittently between approximately 16:00 and 21:00Z today (2nd
Jan), a host which runs one of BitFolk's caching DNS resolvers
(212.13.194.71) was overloaded, causing poor performance for many of
you.
The cause was recent changes in the data transfer monitoring
scripts as previously discussed and detailed in:
https://tools.bitfolk.com/redmine/issues/15
It seems that the more heavyweight method of estimating data
transfer is in some cases slow enough to still be running when the
next scheduled invocation of the script runs, causing both to run
slower, and the problem to spiral.
Since no hosts or critical services were actually reported down, we
weren't made aware of the issue as quickly as might have been
desired.
I have now made some modifications:
- It's now not possible for multiple copies of these scripts to run
at once.
- If system load is too high then the expensive checks will now be
skipped entirely.
There is also the fact that this host is simply doing too much - it
shouldn't be running these scripts in addition to being a resolver.
In the next few days I will be provisioning an additional resolver
and eventually this one will be retired.
Apologies for any disruption this may have caused for you.
Cheers,
Andy
--
http://bitfolk.com/ -- No-nonsense VPS hosting
_______________________________________________
announce mailing list
announce(a)lists.bitfolk.com
https://lists.bitfolk.com/mailman/listinfo/announce
Hi,
There's been a request for a read-only announcements list for
BitFolk, so I have decided to try this out.
I've created the "announce" list:
https://lists.bitfolk.com/mailman/listinfo/announce
In future any sort of announcement that I would normally send to the
"users" list will instead be directed to "announce", and
automatically copied to the "users" list.
The "announce" list will not accept any discussion, and posts
sent through it will have Reply-To set to the "users" list.
Therefore if you're happy with the content and level of traffic on
the "users" list you need not do anything, as all announcements will
continue to end up there.
If on the other hand you would prefer to only see announcements from
BitFolk and not any user issues, following comments or debate, you
may wish to subscribe to "announce" and remove yourself from
"users".
Cheers,
Andy
--
http://bitfolk.com/ -- No-nonsense VPS hosting
_______________________________________________
announce mailing list
announce(a)lists.bitfolk.com
https://lists.bitfolk.com/mailman/listinfo/announce
