BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//7.2.3.1//EN
BEGIN:VEVENT
UID:301@lincs.fr
DTSTART;TZID=Europe/Paris:20170517T140000
DTEND;TZID=Europe/Paris:20170517T150000
DTSTAMP:20170405T083326Z
URL:https://www.lincs.fr/events/burstable-instances-in-the-public-cloud/
SUMMARY:Burstable Instances in the Public Cloud
DESCRIPTION:Amazon EC2 and Google Compute Engine (GCE) have recently
 introduced a new class of virtual machines called "burstable" instances
 that are cheaper than even the smallest traditional/regular instances.
 These lower prices come with reduced average capacity and increased
 variance. Using measurements from both EC2 and GCE\, we identify key
 idiosyncrasies of resource capacity dynamism for burstable instances that
 set them apart from other instance types. Most importantly\, certain
 resources for these instances appear to be regulated by deterministic\,
 though in one case unorthodox\, token bucket like mechanisms. We find
 widely different types of disclosures by providers of the parameters
 governing these regulation mechanisms: full disclosure (e.g.\, CPU capacity
 for EC2 t2 instances)\, partial disclosure (e.g.\, CPU capacity and remote
 disk IO bandwidth for GCE shared-core instances)\, or no disclosure
 (network bandwidth for EC2 t2 instances). A tenant modeling these
 variations as random phenomena (as some recent work suggests) might make
 sub-optimal procurement and operation decisions. We present modeling
 techniques for a tenant to infer the properties of these regulation
 mechanisms via simple offline measurements. We also present two case
 studies of how certain memcached workloads might benefit from our modeling
 when operating on EC2 by: (i) temporal multiplexing of multiple burstable
 instances to achieve the CPU or network bandwidth (and thereby throughput)
 equivalent of a more expensive regular EC2 instance\, and (ii) augmenting
 cheap but low availability in-memory storage offered by spot instances with
 backup of popular content on burstable instances. Work in collaboration
 with Cheng Wang\, Bhuvan Urgaonkar and Neda Nasiriani
CATEGORIES:Seminars
LOCATION:LINCS Seminars room\, 23\, avenue d'Italie\, Paris\, 75013\,
 France
GEO:48.828400;2.356897
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=23\, avenue d'Italie\,
 Paris\, 75013\, France;X-APPLE-RADIUS=100;X-TITLE=LINCS Seminars
 room:geo:48.828400,2.356897
END:VEVENT
BEGIN:VTIMEZONE
TZID:Europe/Paris
X-LIC-LOCATION:Europe/Paris
BEGIN:DAYLIGHT
DTSTART:20170326T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
END:DAYLIGHT
END:VTIMEZONE
END:VCALENDAR