AISBackup Taking Way Too Long to Backup

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Duncan
Posts: 10
Joined: Sat Oct 20, 2007 5:59 pm

AISBackup Taking Way Too Long to Backup

Post by Duncan »

Background Info:
AISBackup Version 2.9.0.395
Windows XP SP3
Backup source: c:\
Destination: [XD]:\Backup5\backup3.zip
***************************************************
Hi All: Something is recently causing AISBackup to run at a snail's pace on my computer. I have been using this program for many years, and have a good feel for how fast it should run. _Something_ (not a virus) is substantially interfering with it now. I would appreciate any suggestions about how to locate the source of this problem and fix it. TIA. Duncan
Barry
Site Admin
Posts: 1529
Joined: Tue Aug 20, 2002 3:16 pm

Slow PC during backup

Post by Barry »

There are several reasons why a PC may slow down, including:

memory usage; where the PC is using more than the installed RAM. The best solution is to install more RAM. Check with Ctrl, Alt & Delete / Task Manager / Performance Tab

On older PC's the disk interface may have reverted from DMA mode to PIO:

http://aiscl.co.uk/How_to_SetorRemoveDMAXP.php

and if the disk controller is set as PIO:

http://aiscl.co.uk/how_to_forcedma.php

If the backup is running quite quickly until a certain point there may be bad blocks on the disk, it may be possible to fix this kind of problem by running a CHKDSK with the check for bad blocks flag:

CHKDSK C: /R

This option will require a reboot.

Was the priority or CPU utilisation changed in AISBackup? Press Pause during a backup and click Show CPU priority bar, move the bar left to improve performance of AISBackup, if the bar is already to the left then this is not the problem.

'Slow PC' Google questions may yield some more suggestions.

If this happened after an upgrade try the previous version of AISBackup, the url take the form http://aiscl.co.uk/dl.php?d=nnn where nnn is the build number.

Barry
Duncan
Posts: 10
Joined: Sat Oct 20, 2007 5:59 pm

Post by Duncan »

These are all good suggestions.

Thank you.
Duncan
Posts: 10
Joined: Sat Oct 20, 2007 5:59 pm

Post by Duncan »

Barry:

I have worked through all of your suggestions, and am now wondering if the problem may be too much data on my system drive (157 GB). Would it be normal for AISBackup to take 10 hours to back up that much data to a USB drive (including high compression and verification)? I can e-mail you my system information if it would help for you to look at it.

Thanks.

Duncan
Barry
Site Admin
Posts: 1529
Joined: Tue Aug 20, 2002 3:16 pm

Backup time

Post by Barry »

Subsequent backup only backup differences so should be fairly quick. This scenario is backing up 571,251 Files of 144,517.00 Megabytes; the backup destination is a USB drive. The same backup to a SATA drive took 2 hours 40 minutes less. compare the MB per minute values with your own system.

This is part of the log from the first run


00:02:46 DEST Backup destination: G:\Backups\C Drive to External 2_5\C Drive to External 2_5.zip, Volume ID: [EXTERNALWD2], Signature: [8A400F000000100000000000]
00:02:46 INF Backing up: 571,251 Files of 144,517.00 Megabytes
00:02:46 INF Excluding: 20 Files (See Modify Files and Folders/Exclusions)
00:02:46 INF Already on Backup: 0 Files
00:02:47 STAT Estimated Size of Backup: 97.70 GB
10:22:14 RESULT Completed successfully
10:22:52 STAT Time Calculating Backup: 23 Minutes 24 Seconds
10:22:52 STAT Time Backing up: 8 Hours 17 Minutes 7 Seconds
10:22:52 STAT Time Testing Backup: 2 Hours 2 Minutes 16 Seconds
10:22:52 STAT Total Time: 10 Hours 42 Minutes 48 Seconds
10:22:52 STAT Time Deleting Old Versions: 3 Seconds
10:22:52 STAT Backed up at 290.71 MB per minute
10:22:52 STAT Compression Ratio: 41%
10:22:52 STAT Not Compressible 37198.07 MB 26% (Not included in compression ratio)
10:22:52 STAT Tested backup at 1,181.94 MB per minute

This is part is the log from the second run:

20:56:41 INF Backing up: 2,887 Files of 9,509.00 Megabytes
20:56:41 INF Excluding: 26 Files (See Modify Files and Folders/Exclusions)
20:56:41 INF Already on Backup: 569,402 Files
20:56:42 STAT Estimated Size of Backup: 7.53 GB
20:58:48 INF Using Media: [EXTERNALWD2]
21:16:52 INF Backing up 114 Exclusively Opened Files
21:21:23 INF 73 hard links updated
21:21:49 INF Testing Backup
21:27:20 RESINF 3 Files were deleted prior to backup
21:27:20 RESINF 2884 Files were backed up and tested successfully
21:27:20 RESULT Completed successfully
21:28:02 STAT Time Calculating Backup: 26 Minutes 17 Seconds
21:28:02 STAT Time Backing up: 24 Minutes 41 Seconds
21:28:02 STAT Time Testing Backup: 5 Minutes 53 Seconds
21:28:02 STAT Total Time: 56 Minutes 52 Seconds
21:28:02 STAT Time Deleting Old Versions: 3 Seconds
21:28:02 STAT Backed up at 385.00 MB per minute
21:28:02 STAT Compression Ratio: 69%
21:28:02 STAT Not Compressible 7035.26 MB 74% (Not included in compression ratio)
21:28:02 STAT Tested backup at 1,615.91 MB per minute

Barry
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