Yes, fragmentation is a problem not really attributable to the drive
itself. Of course an SSDs don't have a head flitting around to gather up
the random bits of your file from all over the platter so fragmentation
doesn't matter on those. In Linux, and I'm assuming OSX, fragmentation
on spinning disks isn't as much of an issue as the filesystem attempts
to distribute files all over the disk. So if you edit a file and make it
a bit bigger, there should be nearby empty sectors available. Of course
that model breaks down if you're running a nearly full disk.
CB
On 3/23/17 1:45 PM, Scott Granados wrote:
The problem is the old fragmentation problem, not to tricky. The files start
getting written in noncontiguous blocks and the more large files you store the
more fragmentation over time you get.
A reformat and reinstall generally clears this up. I don’t mean physical
degradation as much as I mean file system degradation.
On Mar 23, 2017, at 9:56 AM, 'Chris Blouch' via MacVisionaries
<macvisionaries@googlegroups.com> wrote:
Interesting. I had not heard about spinning disks degrading over time. I've
heard of operating systems getting loaded up with goo from old files left
behind and such, but not the drive. There is the stuff about drives remapping
bad blocks over time, but I wouldn't expect that to make an impact with all the
on-drive caching these days.
CB
On 3/23/17 4:43 AM, Scott Granados wrote:
Ok, remember that spinning drive will degrade over time and make that Mac crawl
so make sure you’re backing up regularly because a reformat and reinstall does
fix the problem. (As does replacing it with an SSD).
Good luck and glad it’s sorted out.
On Mar 22, 2017, at 5:20 PM, 'Jim Fettgather' via MacVisionaries
<macvisionaries@googlegroups.com> wrote:
This is a spinning hard drive, but a brand new Mac.
Fortunately, as others have suggested, it settled itself in after a day or so
and is now running lightning fast.
Thanks.
-----Original Message-----
From: macvisionaries@googlegroups.com [mailto:macvisionaries@googlegroups.com]
On Behalf Of Scott Granados
Sent: Wednesday, March 22, 2017 10:44 AM
To: macvisionaries@googlegroups.com
Subject: Re: New iMac, A Bit slow and Sluggish
What kind of disk are you using, SSD or regular rotating/. Also is this a new
IMAC or a used older model?
Thank you
On Mar 20, 2017, at 9:55 AM, 'Jim Fettgather' via MacVisionaries
<macvisionaries@googlegroups.com> wrote:
Hello.
I had tested out the $999 21 inch iMac running Sierra in the Apple Store, and
it had run with impressive speed and responsiveness.
Applications opened quickly, web pages loaded quickly, and there was no lag or "busy
signals" at all.
I purchased the unit, and set it up with my Apple ID and iCloud account, there
were a couple of software updates, so the machine restarted twice.
It is not as fast ore responsive as in the Apple store. There are occasional
pauses or delays.
It is interesting, I have a 3 year old MacBook Air that is just as fast as the
day it was purchased.
Yet, this new iMac is not quite running as smoothly as I would have expected,
especially after having seen it running so beautifully in the Apple store.
Any suggestions at all for tweaking this Mac to run as might be expected?
Thanks a lot.
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