syslog
5Nov/130

Live-blog from SOSP 2013 – Day 2

Posted by Ionel Gog

The second day of the 24th ACM Symposium on Operating Systems Principles has just started.  Several of us are here and will be live-blogging the talks and Q&A sessions.

22Jun/120

HotCloud 2012 — Day 2

Posted by Malte Schwarzkopf

With some delay owed to a laptop battery running out and a busy travel schedule following the event, here are my summaries for (part of) the second day of HotCloud in Boston.

Again, I had to duck out of parts of some of the sessions in order to do last-minute work on an imminent paper submission, but I at least covered two complete sessions.

Some of these summaries are going to turn up in USENIX's ;login: magazine (albeit in a more polished form); I am very grateful to USENIX for supporting my attendance at HotCloud with a generous travel grant.

12Jun/120

HotCloud 2012 — Day 1

Posted by Malte Schwarzkopf

I am a visiting preacher at HotCloud today, delivering a sermon about the seven deadly sins of cloud computing research. Of course, syslog provides you with the usual live-blogging service, although some sessions may be missing, as I nip out to work on a soon-to-be-submitted paper!

Here goes the first day...

26Apr/121

NSDI 2012 Day 3

Posted by Jon Crowcroft

10 New Architectures and Platformsjail break

 

 

 

13Apr/120

Liveblog: EuroSys 2012 — Day 3

Posted by Malte Schwarzkopf

EuroSys 2012Various people from Cambridge are currently in Bern für EuroSys 2012, and will be reporting live from the conference here, as well as summarizing the trends and highlights afterwards.

The final day of the conference starts with a keynote from Steve Furber, followed by two more sessions. Click the link to read the details!

12Apr/120

Liveblog: EuroSys 2012 — Day 2

Posted by Malte Schwarzkopf

EuroSys 2012Various people from Cambridge are currently in Bern für EuroSys 2012, and will be reporting live from the conference here, as well as summarizing the trends and highlights afterwards.

The second day has kicked off, and we will be providing the usual live update service below the fold -- click "continue reading" to get there!

11Apr/122

Liveblog: EuroSys 2012 – Day 1

Posted by Malte Schwarzkopf

EuroSys 2012 Various people from Cambridge are currently in Bern für EuroSys 2012, and will be reporting live from the conference here, as well as summarizing the trends and highlights afterwards.

So here goes -- we're kicking off. Read more below the fold!

13Apr/110

EuroSys 2011, day three

Posted by Derek Murray

Session 7: Better Clouds

Kaleidoscope: Cloud Micro-Elasticity via VM State Coloring

The problem is that load on internet services fluctuates wildly throughout the day, but the bursts are very short (median around 20 minutes) and cloud providers are becoming "less elastic" (bigger VMs up for longer), and cannot support such short bursts because VMs are too heavyweight. The solution is based on VM cloning (SnowFlock), but the lazy propagation of state in SnowFlock leads to lots of blocking after the clone (for TPC-H). The solution is to do page coloring to work out the probable role of the page (code vs data, kernel vs user, etc.), and then tune the prefetching by color (such as read-ahead for cached files). Kaleidoscope also reduces the footprint of cloned VMs by allocating memory on-demand, and performing de-duplication. Most server apps tolerate cloning (only change is a new IP for the clones), and SPECweb, MySQL, httperf work fine. The experiments involved running Apache and TPC-H. Blocking decreases from 2 minutes to 30 seconds. TPC-H takes 80 seconds on a cold Xen VM, 20 seconds on a warm one, 130 seconds on a SnowFlock clone, and 30 seconds on a Kaleidoscope clone. Based on a simulation of an AT&T hosting service, Kaleidoscope achieved 98% fewer overheads using a 50% smaller data center. - dgm36

10Apr/110

Systems for Future Multi-Core Architectures

Posted by Derek Murray

Today was workshop day at EuroSys 2011, and I spent the day at the inaugural SFMA workshop. The aim of the workshop was to bring together practitioners from the fields of operating system, programming language and computer architecture research, and provoke discussion about new trends in parallel computing. The most notable thing about the workshop was the number of practitioners that it attracted, starting off with standing room only at 9am in the morning, and maintaining a respectable audience of 35 people through to 5pm. I was on the program committee for the workshop, and Ross did a great job of organising the whole thing.