How many segments a process can have in operating system employing Segmentation for memory management

Some facts about “Segmented Paging”

1) Each process has one segment table.
2) There is one-page table per segment.

Fact about “Paged segmentation”

3) Contains page table of segment table.

Now consider following problem

In a paged segmented scheme of memory management, the segment table itself must have a page table because. (A) The segment table is often too large to fit in one page.
(B) Each segment is spread over a number of pages.
(C) Segment tables point to page tables and not to the physical locations of the segment.
(D) The processor’s description base register points to a page table

Given solution is:

Here option (A) is true , as segment table are sometimes too large to keep in one pages. So, segment table divided into pages. Thus page table for each Segment Table pages are created.

My Doubt

I believe a page can contain several hundreds of segment table entries of form

  <segment base, limit> 

I only came across code, data, stack and heap segments. I believe a process can have only these “four” segments. And also, we know each process has a segment table (Fact 1). Then how a segment table can grow so large that it cannot be fitted in a single page?

AWS Redshift Workload Management

I am planning an AWS Redshift (RS) data warehouse and expect to have mix of longer-term jobs (60%) and short-term jobs (40%). The plan is to use workload management (WLM) and create multiple queues to manage the jobs (easy). Recently I saw an architecture that creates dedicated RS DB’s for specific users as a way to manage workload, but this seems expensive and inefficient. Question: Any experiences where dedicated RS DB’s were a better choice than using single RS DB with WLM?

Diesel / Commercial Truck / Fleet Management Website

Why are you selling this site?
Money. I have other projects I am working on and don't have time to work on this one anymore.

How is it monetized?
There is an "Advertise with us" page for Central FL trucking companies and part stores to advertise on the site. The website is attracting the right audience for these companies and selling ad space should be easy.

Does this site come with any social media accounts?
No, I was going to make social pages and start promoting…

Diesel / Commercial Truck / Fleet Management Website

Shim UEFI MOK management countdown key press ignored

I have a system with Windows 10 with UEFI, and secure boot enabled. I have installed Ubuntu 18.04 in a dual boot configuration. I installed a driver in Ubuntu which required setting up of an MOK and a new password.

After rebooting, the UEFI MOK management screen is shown, which instructs the user to press any key to enter MOK management. However, pressing any key does not work, the countdown gets over and the screen proceeds to the grub menu. Further reboots do not bring up the Shim UEFI countdown screen.

I tried uninstalling and installing the driver followed by rebooting, but the issue persists. Is there another way to manually enter MOK management to confirm the password? Or should I just disable secure boot?

Dependency management for facades/adapters to cloud services (SemVer?)

Suppose I have a library, that basically works as a facade to some cloud service (e.g. JavaScript API that wraps around network calls to some RESTfull service). And once that service introduces a backward-incompatible change.

There are two possible scenarios I can think of, and I’m not really sure how to handle both the best way.

  1. In simpler case, my library somehow manage to handle that backward-incompatibility (and now became an adapter). So I ship an patch version because API of my library did not change, and previous version is now have some kind of a buggy behavior (relies on external API that does not exists any more). The problem here is that all already built programs, as well as ones that uses some kind of dependency locks are now broken and must update their dependencies. Well, I can say that that’s not a my problem, but it bugs me a bit.

  2. In more complex and more real case, my library can’t abstract that backward-incompatibility and it leaks through it, so I have to change a public API of my library too. So, I ship a major version. The problem is that it breaks the whole point of SemVer, where the user suppose to have the freedom to decide where they want to have a major update or do not, because a previous major version supposed to work along with the new one. But it does not and can’t be patched.

I understand that SemVer approach is not supposed to handle such cases. But I have no idea what is supposed to. Is there any approaches to such cases out there?

Hierarchical nodes management

We want to start managing hierarchical relationships between products using (hopefully) boilerplate tree algoritms, datamodel and GUI software (involving Java and Angular).

Verticaly bound products will limit child nodes to have a price higher then a parent (or within a % % upper limit).

Nodes on a same level AND which are manually bound to each other are considered ‘horizontically’ bound and will give the same sales price to each other (according to a ‘horizontal’ rule which uses ‘lowest’ or ‘average’ or ‘most common’ price.

We only support ‘x’ hierarchy levels (like 3 or 4)

Does these type of requirements feel familiar to some one? Can you refer me some existing documentation (database models) or existing software (Java backend and/or angular JavaScript libraries)?

SocialBu: A social media management and automation platform

Hi there,

I recently launched a new social media management and automation platform. It helps you manage all your social media accounts in one place. Currently supports facebook, twitter, instagram and linkedin. More networks are also coming soon.

You can publish content, respond to your messages+comments, analyze, automate and collaborate on your social media as a team too, all using SocialBu.

It recently got instagram story scheduling.

I am looking for feedback on it. What do you…

SocialBu: A social media management and automation platform

Is order management a pain in the ass?

Do you want to let advanced technology manage your orders?

I'm building Bountium, a tool that leverages smart contracts to help you track orders and react automatically to them.

You can automate order fulfillment for a dropshipping business, or set up more complex reactions – restocking a product after a certain number of orders, placing supply orders to a multi-step supply chain, or even creating unique customised products for every single customer.

We're building lots more features…

Is order management a pain in the ass?

Are there any good examples or case studies of Project Management SharePoint sites on Modern Experience?

I am looking to implement a PMO site in my tenant and one of the requirements I have is to be able to aggregate project status updates in a dashboard from multiple projects.

We are running in Modern Experience, so I am wondering if there are any examples or case studies if anyone has implemented project SharePoint sites on SharePoint Online?

Previously, I would have used Content Search web parts with stylings. I assume Highlighted Content webpart may serve me here, but I wanted to see if anyone else has done something similar.

Management of ARM and build templates on Azure DevOps

As part of more automation in deployments, we would like to use Azure DevOps as the main build- and release-tool. As our main goal at the moment is to serve mostly Azure and also make the templates reusable, we would like to use YAML templates in the build-process and ARM (Azure Resource Manager) ones for the setup of the Resources in Azure.

One interesting part we have no solution so far, is how to handle the management of these templates: It is technically quite easy to set up a distinct repository and target the templates there, it seems like it doesn’t scale that well:

  • How to handle project-specific steps or ones, which aren’t needed?
  • How to handle customization of the templates of any sorts, yet without having to copy them to each repo?
  • How does one find the correct template he seeks?

In my previous company, we went with the approach to manage it centrally and to add a lot of parameters, but it didn’t scale well even for a way smaller number of templates and we also lost a lot of the benefits.

I guess I’m not the first person to ask these questions, yet I didn’t find any good articles about the management best practices. I would therefore like to know, if anyone has experience regarding that topic and what is working and what isn’t?