| From: | Don Cox |
| Date: | 30 Sep 2001 at 14:18:04 |
| Subject: | [amigactive] Re: Buffers |
Hello Ken
On 30-Sep-01, Ken Walsh wrote:
> On 25-Sep-01, Neil Bothwick wrote:
>
>> Ken Walsh said,
>>
>>> I thought I was over the top with 128mb on a Amiga. You must scan
>>> some big pictures if not do you ever use it all!
>>
>> If you ever use it all, you don't have enough.
>>
>> You can always use more memory. Increase your hard drive buffers,
>> make more programs resident. There are many ways to use RAM to speed
>> up the overall operation of an Amiga. The last thing you should use
>> it for is to increase the numbers in the title bar.
>
> I thought about this and went to HDTools and changed my buffers in my
> settings. Workbench was on 80 and all the other 3 partitions were on
> 500
>
> I made them a 1000 what would be a good setting seeing I have 128 fast
> ram, I use shapeshifter/netscape a lot so that does use a lot up.
It depends on what block size you have on each partition and how much
RAM you can spare.
The following applies to FFS only, not SFS or PFS.
1000 1k blocks is 1 Meg of RAM, 1000 16k blocks is 16 Megs.
There's no simple rule about block size, but doing "list all" on a partition
will tell you how many files there are, how many blocks are used, and
thence how many blocks the average file is using. HDToolbox will tell
you the block size on that partition.
Bigger blocks give faster access, but each file will on average waste
half a block of disk space, so for a partition with thousands of small
files it makes sense to use smaller blocks, such as 2k. A partition for
big audio files should always use 16k blocks. As drives get bigger,
wasted space gets less important, so you can go for bigger blocks.
Icon files can waste a lot of space if you are using big blocks.
To change the block size on a partition, you have to back it up,
set block size in HDToolbox, reformat, and restore. There are doubts as
to whether 32k blocks are safe (FFS bugs), but 16k ones certainly are.
Regards
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