On 2014-09-28 09:00, Edward Ned Harvey (lopser) wrote: >> From: Derek Balling [mailto:[email protected]] >> Sent: Sunday, September 28, 2014 10:46 AM >> >> Wild-ass Speculation: With Amazon's commitment to cloud computing, and >> with SDN use on the rise... is it possible they're rebooting "virtualized >> network gear"? > > Extremely possible. But that ... might not? ... explain the wildly variable > network performance during times when everything is up and operational, yet > horribly performant. (Such as downloading/uploading files, sometimes going > 30Mbit and sometimes 15KB/sec, such as ping response being sometimes 20ms, > and sometimes 800ms or straightup timeout).
This is not new. A few years ago we had to stop using some data store clusters that worked perfectly in data centers but kept losing their mind on AWS because of small network glitch. For monitoring instances, increase the number of retries before declaring an instance as dead and alerting about it. -- Yves. _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
