Exception is thrown when lock previously held by a failed member is locked and then released by another one group member

Process A is write-locks "lock1", then it fails (I simulated a network crash by disabling the network adapter), view update is happened, then process B acquires write-lock (or read-lock - no matter...

Id #7 | Release: None | Updated: May 5, 2016 at 3:03 PM by birman | Created: May 3, 2016 at 10:48 AM by konst3d

Not all of the awaiting reader locks informed when writer lock is released

In case we have a process holding write lock and few processes trying to acquire read lock (waiting for some timeout), only first one reader will be informed when writer lock will be released - it ...

Id #6 | Release: None | Updated: May 5, 2016 at 8:34 AM by konst3d | Created: May 3, 2016 at 10:00 AM by konst3d

On Amazon, each computer has two IP addresses

A computer on AWS will always have two IP addresses assigned by Amazon. For external purposes, your Cloud VLAN exposes an IP address through the AWS DNS that leads to the virtual private LAN loa...

Id #5 | Release: None | Updated: Apr 19, 2016 at 2:09 PM by birman | Created: Apr 16, 2016 at 1:10 PM by birman

Why breakpoints from IDEs and debuggers don't work with Vsync

A few students in my spring cloud computing class at Cornell have been puzzled by confusing application state when they pause a program using Vsync and then look at data where Vsync is somehow invo...

Id #4 | Release: None | Updated: Apr 16, 2016 at 1:07 PM by birman | Created: Apr 13, 2016 at 3:04 PM by birman

Major issue on Mono, resolved in 2.2.2063

Theo Gkountouvas identified a serious issue on Mono, and after incredibly difficult testing ultimately tracked it down to a bug in the Mono compiler. Release 2.2.2063 fixes the problem. It arises...

Id #3 | Release: Vsync 2.2.2020- Previous general release | Updated: Jan 30, 2016 at 2:11 PM by birman | Created: Jan 30, 2016 at 2:09 PM by birman

Master/Worker startup problem

Theo Gkountouvas found a small issue in the most current release, related to the way that the master/worker system handles startup. In master/worker mode, you have one master process, perhaps pid...

Id #2 | Release: Vsync 2.2.2020- Previous general release | Updated: Dec 22, 2015 at 6:13 PM by birman | Created: Dec 22, 2015 at 4:54 PM by birman

using mono

I have a simple Program which starts the VsyncSystem and waits forever. I compiles fine under mono 4.2.1.124, but an exception is thrown when I try to start the program: MCMD SockSetup failed: err...

Id #1 | Release: Vsync 2.2.2020- Previous general release | Updated: Dec 22, 2015 at 4:56 PM by birman | Created: Dec 11, 2015 at 9:08 AM by krgn

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