Deadlocked In Time [v0.10] [EXCLUSIVE]
This is the story of a boy who no longer appreciates life, after which his father sent him from private school to public, everything just changed for him. As a result, he is bullied by his classmates, his grades are so bad that even his future is in danger, and he is constantly skipping school. The only people who get along with him are his friends and girlfriend who, like him, have no interest in school and share the same views. One day, when his life is slowly but surely improving, something strange happens, time stands still, the sun doesn't set anymore and night never falls. Everyone is in a kind of Stasys and can't move anymore, except you.
Deadlocked in Time [v0.10]
On Linux, the runtime now uses MADV_FREE to release unused memory. This is more efficient but may result in higher reported RSS. The kernel will reclaim the unused data when it is needed. To revert to the Go 1.11 behavior (MADV_DONTNEED), set the environment variable GODEBUG=madvdontneed=1.
#986 Allow to save some startup & sync time in store gateway as it is no longer needed to compute index-cache from block index on its own for larger blocks. The store Gateway still can do it, but it first checks bucket if there is index-cached uploaded already. In the same time, compactor precomputes the index cache file on every compaction.
While your code processes a message, it can send one or more messages to other actors, or create new actors. An underlying runtime manages how, when and where each actor runs, and also routes messages between actors.
Invocation of actor methods and reminders reset the idle time, e.g. reminder firing will keep the actor active. Actor reminders fire whether an actor is active or inactive, if fired for inactive actor, it will activate the actor first. Actor timers do not reset the idle time, so timer firing will not keep the actor active. Timers only fire while the actor is active.
The idle timeout and scan interval Dapr runtime uses to see if an actor can be garbage-collected is configurable. This information can be passed when Dapr runtime calls into the actor service to get supported actor types.
The Dapr actor runtime manages distribution scheme and key range settings for you. This is done by the actor Placement service. When a new instance of a service is created, the corresponding Dapr runtime registers the actor types it can create and the Placement service calculates the partitioning across all the instances for a given actor type. This table of partition information for each actor type is updated and stored in each Dapr instance running in the environment and can change dynamically as new instance of actor services are created and destroyed. This is shown in the diagram below.
Actors can deadlock on each other if there is a circular request between two actors while an external request is made to one of the actors simultaneously. The Dapr actor runtime automatically times out on actor calls and throw an exception to the caller to interrupt possible deadlock situations.
A turn consists of the complete execution of an actor method in response to a request from other actors or clients, or the complete execution of a timer/reminder callback. Even though these methods and callbacks are asynchronous, the Dapr actor runtime does not interleave them. A turn must be fully finished before a new turn is allowed. In other words, an actor method or timer/reminder callback that is currently executing must be fully finished before a new call to a method or callback is allowed. A method or callback is considered to have finished if the execution has returned from the method or callback and the task returned by the method or callback has finished. It is worth emphasizing that turn-based concurrency is respected even across different methods, timers, and callbacks.
The Dapr actor runtime enforces turn-based concurrency by acquiring a per-actor lock at the beginning of a turn and releasing the lock at the end of the turn. Thus, turn-based concurrency is enforced on a per-actor basis and not across actors. Actor methods and timer/reminder callbacks can execute simultaneously on behalf of different actors.
The following example illustrates the above concepts. Consider an actor type that implements two asynchronous methods (say, Method1 and Method2), a timer, and a reminder. The diagram below shows an example of a timeline for the execution of these methods and callbacks on behalf of two actors (ActorId1 and ActorId2) that belong to this actor type.
These objects store a variety of metadata about each task, including various timestamps.We can validate that the dependencies were respected by checking that each task wasstarted after all of its predecessors were completed:
A hook that does something in before_step() can often beimplemented equivalently in after_step().If the hook takes non-trivial time, it is strongly recommended toimplement the hook in after_step() instead of before_step().The convention is that before_step() should only take negligible time.
This hook uses the time between the call to its before_step()and after_step() methods.Under the convention that before_step() of all hooks should onlytake negligible amount of time, the IterationTimer hook should beplaced at the beginning of the list of hooks to obtain accurate timing.
The standard implementation of BatchNorm uses EMA in inference, which issometimes suboptimal.This class computes the true average of statistics rather than the moving average,and put true averages to every BN layer in the given model.
Ok, it happened again and this time I saved the file before, after and the created .png image file.I can repeat this only if running inkscape through gdb. If do the exact same things under inkscapec it doesn't happen.
just a sample from a superficial (short of time, have to go now) googling after "debugger bug clipboard"... does this make sense in relation to your bug? AFAIU it says there's an interaction between the debugger - clipboard - application... it's an old blog post but maybe a hint to those who think in code? 041b061a72