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Questions tagged [defragmentation]

The process of decreasing the amount of fragmented files on a computer's system hard drive.

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Defrag indexes on very large production tables

I want to defrag indexes on a very large production table. This table is used by clients and the downtime will create a problem. What is th ebest methid to defrag indexes on such SQL server tables. If I rebuild indexes it will lock table. Should I…
Prateek
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Is there a possibility of creating a visual defrag scrip in python3.x?

I have been looking for a script that could defrag a HDD but also display what it is defragmenting and what was defragged, through with os.walk(). But i've found nothing. import os def run(): filestoscan = 0 list =…
LethDev2019
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Can LockFileEx be used with Volume Handles?

I'm experimenting with FSCTL_MOVE_FILE. Mostly everything is working as expected. However, sometimes if I try to re-read (via FSCTL_GET_NTFS_FILE_RECORD) the Mft record I just moved, I'm getting some bad data. Specifically, if the file record says…
David Wohlferd
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Mariadb table defragmentation using OPTIMIZE

We are running MariaDB v 10.1.30, testing a script to run database maintenance script for defragmenting tables and rebuilding indexes using OPTIMIZE TABLE command by using the new 10.1.1 patch of setting innodb_defragment = 1. I've tested Alter…
vak
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how to perform defragmentation on cassandra table

I am playing around with Python and some of NoSql DBs to create file store(mainly because of built in replication), i tried it with MongoDB and its working but due to "Write Greedy" nature of MongoDB i moved to cassandra and implemented the same…
Ninad Mhatre
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Does anyone know of a way to turn off Windows Defragmenter's default schedule using a batch file?

I would like to use a batch file to stop Windows Disk Defragmenter from running on a schedule. By default it is enabled and I would like to disable it on Windows 7 Right now it is turned off but you get the idea. Does anyone know how to do this? I…
Justin
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Is defragging tough on replication?

I've been told that defragging causes the log to grow tremendously. Is this true? If so, is there something better to do than defragging that will not impact the log as much? We are running SQL Server 2005 replicating between 2 sites.
Jim
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Programmatically determine a file's fragmentation status

Is it possible to determine a specific file's fragmentation status (that is, the amount of distinct fragments this file occupies)? If so, how can this be done using .net? The motivation is this: my application is keeping data in a FileStream,…
M.A. Hanin
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SQLite databases and operating system defrag

I have seen some applications using proprietary databases crash or experience data corruption if the application was running when the OS (Windows in this case) performs a disk defragmentation. My question is this: Does SQLite (sqlite3) suffer from…
Brian Minton
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Windows defrag is not recognized as an internal or external command, operable program or batch file

I'm working on making a tech-toolkit program, and included in this 'toolkit' will be a button which runs a defrag on the local disk. Currently the batch file I've made for this is simple, it just runs a basic fragmentation analysis: defrag C:…
James Litewski
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VB.NET Defrag Complete Notification

Is there an event or other means by which a VB.NET program can be notified when a Windows 7 defrag has completed (so the program can instruct the PC to shut down)?
Matthew Constance
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Efficient list compacting

Suppose you have a list of unsigned ints. Suppose some elements are equal to 0 and you want to push them back. Currently I use this code (list is a pointer to a list of unsigned ints of size n for (i = 0; i < n; ++i) { if (list[i]) …
Patrik
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Defragmenting very large db4o database files

I have a very large ( 102gb ) db4o .yap file that i am trying to defragment. I keep getting a java heap space error. Is there something i can do to tweak the settings to prevent this? I am already setting the objectCommitFrequency to 10000. I am…
Andy Rayne
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Move OS files to the begin of the disk

I would like to know if it's possible to move the files on a given partition to the begin of the disk, where the read/writes are faster. I currently have Windows Vista installed on the first partition of the disk with a few more partitions for work…
smartins
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CLI RPI: How to fdisk and defrag your flashdisk

Hey does anoybody knows a site or command to fdisk your flashcard on your raspberry? Secondly i want to defrag it. Anybody help? Greets, Wouter PS: It is mounted in this enclosure. You can always ask for further explanation of my project
Wouter van Wegen
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