ipc | Go wrapper for System V message queue | Messaging library

I am trying to run Oracle db in docker on M1 Mac. I have tried images from both store/oracle/database-enterprise:12.2.0.1-slim and container-registry.oracle.com/database/enterprise:12.2.0.1-slim but getting the same error.

docker run -d -it --name oracle -v $(pwd)/db/oradata:/ORCL store/oracle/database-enterprise:12.2.0.1-slim

I also tried non-slim version and by providing the --platform linux/amd64 to the docker command. Result is same.

Here's the result of docker logs -f oracle

In a Python 3.8 application a parent process is responsible for creating child processes (workers) and forwarding messages to them via IPC (tasks).

Parent process has its own logger that uses FileHandler to write to a file main.log but it also opens one logger per child process with a unique file for each of them to log IPC activity and errors.

Child processes are created via system call fork. IPC is done via OS queues. See below diagram that illustrates the situation.

The problem: while it is beneficial to log IPC activity on the parent process side and keep it in a dedicated file, this opens a lot of File Descriptors (FDs) which are all inherited by each and every subsequent child process.

Question: how to manage these FDs? Manually find and close them in each child process on run()? Is there a better way?

I'm trying to run a Structured Streaming program on GCP Dataproc, which accesses the data from Kafka and prints it.

Access to Kafka is using SSL, and the truststore and keystore files are stored in buckets. I'm using Google Storage API to access the bucket, and store the file in the current working directory. The truststore and keystores are passed onto the Kafka Consumer/Producer. However - i'm getting an error

Command :

I've been using VS coed for some years now and I loved the experience so far, but one of my most recent projects is suddenly slowdowns the VS code drastically, I couldn't figure out why yet. And amazingly other projects do not give me this headache at the moment, with VS code. So I suspect there's something with the particular project I was mentioned before giving me the trouble. I tried deleting the repo and cloning it again in a new place, uninstalled and installed VS code again, but still no luck. It's really laggy, It takes upto a minute or so to update something I wrote in the editor.

Here's the status report of VS code when the problem occurs

I'm trying to setup a webpack dev server but for a reason, I'm running into an error.

[webpack-cli] Invalid options object. Dev Server has been initialized using an options object that does not match the API schema. options has an unknown property 'contentBase'. These properties are valid: object { allowedHosts?, bonjour?, client?, compress?, devMiddleware?, headers?, historyApiFallback?, host?, hot?, http2?, https?, ipc?, liveReload?, magicHtml?, onAfterSetupMiddleware?, onBeforeSetupMiddleware?, onListening?, open?, port?, proxy?, server?, setupExitSignals?, static?, watchFiles?, webSocketServer? }

I did install all the needed packages globally and tried some other suggestions but I cannot get it to work.

This is the config:

I would like to use GPG without Gpg4win installed on Windows because Git for Windows includes the binary for GPG we well, so I would like to use it instead of installing an extra application.

However, when I setup the GPG (e.g adding Path etc), I have encountered the following error:

I have a strange "problem" in a Java project. This is the method where the error is:

I would just like to ask what could be the meaning of this error?

[Although I'm working in perl I believe that this question relate to Linux System V IPC APIs and limits rather that the anything perl-specific.]

I have two Centos machines, each at CentOS Linux release 7.9.2009 (Core).

I have a program that forks a child and then uses System V IPC messages to communicate with the child, the child prepares answers ands sends them to the parent.

On one machine we see expected behaviour. The child produces batches of messages, the parent consumes them. Occasionally the child works a little faster than the parent, and so may fill the queue, the child then waits until the parent consumes some messages and proceeds.

We can inspect the queue sizes with ipcs -q and see that the default limit of 10 messages per queue is occasionally reached, the child pauses, and then we see the queue empty as expected.

We believe that the queue limits are specified in files in /proc/sys/fs/mqueue/ and for example msg_max is seen to be the expected 10. These values are identical on both machines.

We also can view user ulimits relating to queue using ulimit -q and see a value in excess of 800,000 bytes on both machines.

The puzzle is that on our second machine we see the child write three messages to the queue and attempt to write the fourth and wait - we deliberately set no timeout. It is as though the writer believes that the queue is full, even though ipcs -q shows only 3 items in the queue. At this point in time the parent is not yet attempting to read the messages.