笔记

Category: Uncategorized

  • Nvme vs PCIE

    The number of NVMe disks a PCIe 4.0 slot can support at full speed depends on how many PCIe lanes are available on the slot and how the NVMe SSDs are connected through the adapter.

    PCIe 4.0 Bandwidth and Lane Configuration:

    • PCIe 4.0 can deliver 16 GT/s (Gigatransfers per second) per lane, and each lane provides a theoretical 2 GB/s of bandwidth in each direction.

    • Typically, a single NVMe SSD requires 4 PCIe lanes (x4) to operate at full speed, which provides a maximum theoretical throughput of 8 GB/s (since PCIe 4.0 x4 offers around 8 GB/s in total bandwidth).

    Scenarios for Multiple NVMe Drives:

    1. Single PCIe 4.0 x16 Slot:

    • A PCIe 4.0 x16 slot can provide 16 lanes of bandwidth. If you’re using a PCIe to NVMe adapter that supports multiple drives, the number of NVMe disks it can fully support depends on how it splits the bandwidth across the lanes.

    • Example: A PCIe 4.0 x16 slot theoretically supports 4 NVMe drives in a 4×4 configuration (one x4 for each drive), delivering full-speed performance (up to 8 GB/s per SSD).

    2. Single PCIe 4.0 x8 Slot:

    • A PCIe 4.0 x8 slot provides 8 lanes, so it can support 2 NVMe SSDs at full speed (each getting 4 lanes or x4).

    3. Single PCIe 4.0 x4 Slot:

    • A PCIe 4.0 x4 slot provides 4 lanes, which means it can support 1 NVMe SSD at full speed.

    4. PCIe 4.0 x1 Slot:

    • A PCIe 4.0 x1 slot provides just 1 lane, which can support only one NVMe SSD at a much slower speed (lower than the typical x4 configuration for NVMe).

    Conclusion:

    • A PCIe 4.0 x16 slot can fully support up to 4 NVMe drives at full speed (if the adapter is designed for this).

    • A PCIe 4.0 x8 slot can support 2 NVMe drives at full speed.

    • A PCIe 4.0 x4 slot can support 1 NVMe drive at full speed.

    So, to maximize the number of NVMe SSDs running at full speed, you need to ensure you have a PCIe 4.0 x16 slot and a multi-drive NVMe adapter capable of splitting the lanes correctly.

  • Convert Page to Post

    How to Convert a Page to a Post in WordPress

    If you need to convert a WordPress page into a post, here are the best ways to do it:

    1️⃣ Use a Plugin (Easiest Method)

    The best way to convert a page to a post is by using a plugin.

    🔹 Recommended Plugin: Post Type Switcher

    ✅ Allows easy conversion between pages and posts
    ✅ Keeps content, SEO, and formatting intact
    ✅ No coding required

    🔹 Steps to Convert a Page to a Post

    1. Install & Activate the “Post Type Switcher” plugin.
    2. Go to Pages → All Pages in the WordPress dashboard.
    3. Find the page you want to convert.
    4. Click Quick Edit and change the “Post Type” to Post.
    5. Click Update—done! 🎉

    📌 You can also bulk-edit multiple pages to convert them into posts.

    2️⃣ Convert Manually (Without a Plugin)

    If you don’t want to use a plugin, you can manually copy the page content and re-create it as a post.

    🔹 Steps:

    1. Open the page you want to convert.
    2. Copy all the content.
    3. Go to Posts → Add New and paste the content.
    4. Assign the correct category and tags.
    5. Click Publish, then delete the original page (optional).

    📌 This method is best for a small number of pages.

    3️⃣ Convert Using PHP Code (For Developers)

    If you need to bulk convert pages to posts, you can use a small PHP script.

    🔹 Add This Code to functions.php

    function convert_pages_to_posts() {
    global $wpdb;
    $wpdb->query("UPDATE $wpdb->posts SET post_type='post' WHERE post_type='page'");
}
add_action('init', 'convert_pages_to_posts');

    📌 This will convert ALL pages to posts!
    🔴 Warning: Remove the code after running it to prevent it from executing repeatedly.

    🎯 Which Method Should You Use?

    • ✅ Use a Plugin if you want a quick and easy way.
    • ✅ Copy & Paste Manually if you only need to convert a few pages.
    • ✅ Use PHP Code if you want to bulk-convert many pages.

    Would you like help choosing the best option for your case? 😊

  • Post List

    • Lightroom – Library shortcuts

      https://helpx.adobe.com/lightroom-classic/help/keyboard-shortcuts.html Lightroom Classic Library Module Shortcuts Here are some of the most useful keyboard shortcuts for the Library Module in Lightroom Classic: 📌 Navigation & View Modes 📌 Photo Selection & Organization 📌 Filtering & Searching 📌 Keywording & Metadata 📌 Miscellaneous ✅ Tip: You can customize shortcuts in Lightroom Classic by using third-party software…

    • Lightroom: Catlog, Folder, Collection

      In Adobe Lightroom Classic, Catalogs, Folders, and Collections serve different purposes in organizing and managing your photos. Here’s a breakdown of what each one does: 1. Catalog (The Database) 📂 A Lightroom Catalog (.lrcat file) is the database where all your edits, metadata, and organization settings are stored. It does not contain the actual photo…

    • Query Loop – Inline items

      In WordPress, when using the Query Loop block in the Block Editor, the default behavior is that each item (post) appears on a new line. However, if you want the items to appear inline (following the flow of the previous item instead of starting on a new line), you can achieve this by customizing the…

    • WordPress: Image on Image

      Yes, you can absolutely place an image on top of another image in WordPress. There are several ways to achieve this, depending on your desired effect and level of technical comfort: 1. Using the WordPress Block Editor (Gutenberg):

    • New Post Type template using blockeditor

      先读这个 Post Type – 笔记 To enable the block editor (Gutenberg) for your custom post type “book” (or whatever your post type is), you need to modify the register_post_type arguments within your functions.php file or custom plugin. Specifically, you need to add or modify the supports argument. Here’s how you can do it: 1. Modify…

    • Post Type

      The single-{post-type}.php template in WordPress allows you to create a custom layout for individual posts of a specific custom post type. Here’s a step-by-step guide on how to add and use it: 1. Create Your Custom Post Type (If You Haven’t Already): PHP 2. Create the single-{post-type}.php Template File: 3. Add Content to Your Template:…

    • Nvme vs PCIE

      The number of NVMe disks a PCIe 4.0 slot can support at full speed depends on how many PCIe lanes are available on the slot and how the NVMe SSDs are connected through the adapter. PCIe 4.0 Bandwidth and Lane Configuration: • PCIe 4.0 can deliver 16 GT/s (Gigatransfers per second) per lane, and each…

    • 可以加背景图像的块

      Blocks That Support Background Images in WordPress Gutenberg In the WordPress Block Editor (Gutenberg), some blocks allow you to set a background image directly. Here are the best options: 1️⃣ Cover Block (Best for Full-Width Backgrounds) ✅ Supports: Background images & videos ✅ Best for: Hero sections, headers, call-to-action areas 🔹 How to Use: 1. Add a “Cover” block (+ → Search for “Cover”). 2. Click “Upload” or…

    • Web Site Design

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    • List Posts Grouped by Tag or Category

      How to List WordPress Posts Grouped by Tag or Category If you want to display WordPress posts grouped by category or tag, here are the best ways: 1️⃣ Use a Plugin (Easy Method) If you prefer a no-code solution, try Display Posts or WP Show Posts plugin. 🔹 Steps to Use Display Posts Plugin 2️⃣…

  • WordPress Theme

    URLs

    Reference

    Learning

    Theme Handbook

    theme.json

    2025 theme.json

    https://notes.zj1963.com/wp-content/uploads/2025/02/theme-json.svg