|
#1
|
|||
|
|||
Backup (very) slow on iBook G4
Hello.
I have been trying to clone my iBook G4 (1.42 GHz, 512 MB)'s hard drive to my new FW 400 external drive, yet have had to give up because it was taking much longer than expected. I had heard of copying rates of 1 GB per minute, but the copying rate on my computer was only about 0.80 MB/s... The FireWire transfer rate clearly is not to blame : copying a 500 MB file to the external HD via the Finder only takes a few seconds, as it should. SD itself does not seem to be the culprit either : I attempted Restoration to my external HD via Disk Utility, with about the same (non-)result... My questions are : - Is this copying rate normal given my configuration (a bit outdated, I suppose...) ? - If not, what can I do to improve it ? Does it have anything to do with the external HD being journaled ? Thank you in advance for any help. |
#2
|
||||
|
||||
Anything other than the FW drive attached to FireWire? What specific brand/model of drive is it?
__________________
--Dave Nanian |
#3
|
|||
|
|||
Thanks for your answer.
No, nothing else is attached to the FW port. My external HD is a 250 GB LaCie d2 with triple interface. When copying via the Finder, the transfer rate seems to be OK (a few seconds for a 450 MB iDVD project for example). I only seem to have this slowness problem when backing up my entire HD, whether via SuperDuper or Disk Utility. |
#4
|
||||
|
||||
There's certainly a big difference between copying a single very large file (like an iDVD project) and hundreds of thousands of small ones, so it's hard to generalize from Finder's behavior.
So, the overall speed at the end of the copy operation is less than 1MB/s?
__________________
--Dave Nanian |
#5
|
|||
|
|||
Quote:
Quote:
I'll run it tonight in its entirety and post back with the average copying rate. P.S.: Could the relative slowness of the processor be responsible? It's only a 1.42 GHz G4, but is not 100% active when backing up (according to MenuMeters).
__________________
Config.: 14" G4 iBook, 1.42 GHz, 512 MB (Sept '05) + 250 GB LaCie d2 via FW 400. |
#6
|
||||
|
||||
In general, a large copying operation is not CPU-bound, it's I/O bound, and is more affected by the speed of that subsystem. If you're running any kind of low-level tool like AntiVirus, though, that'll affect things very severely.
__________________
--Dave Nanian |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | Rate This Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
slow backup speed | ncm | General | 3 | 11-25-2006 09:15 PM |
How to verify a Scheduled Backup? | tuqqer | General | 3 | 12-06-2005 06:50 PM |
(Zero-length) File caused SuperDuper to abort backup | alancfrancis | General | 7 | 08-31-2005 10:42 AM |
Smart Backup is very slow | macgruder | General | 1 | 07-19-2005 09:09 AM |
Smart Backup Error | bill s | General | 20 | 02-04-2005 09:46 AM |