Yesterday I installed the new SIMMs. As stated they were 60 ns SIMMs and
there were no problems mixing them with the 70 ns SIMMs already installed.
As expected, the performance boost was dramatic. I deleted the link to
/dev/rz0b so I could run in lazy swap mode. Now my swap constantly looks
like this:
# /sbin/swapon -s
Swap partition /dev/rz0b:
Allocated space: 16384 pages (128MB)
In-use space: 1 pages ( 0%)
Free space: 16383 pages ( 99%)
Total swap allocation:
Allocated space: 16384 pages (128MB)
In-use space: 1 pages ( 0%)
Available space: 16383 pages ( 99%)
I wish I had done this a year ago.
>>I have an AlphaStation 200 with 32MB of memory. I am planning to add an
>>additional 128MB. According to the user guide, this machine will take
both
>>70 ns or 60 ns SIMMs. I'm pretty sure it has 70 ns SIMMs now. I can get
>>60 ns SIMMs immediately will have to wait if I want the 70 ns SIMMs. Can
I
>>mix 60 ns and 70 ns SIMMs? If not, will I create any problems by
removing
>>the 70 ns SIMMs and using just the 60 ns SIMMs? I'd like to add to my
>>current memory rather than simply replacing it but if mixing the SIMMs
will
>>cause a problem I'll remove the old SIMMs.
>>
>>My next question concerns swap space. My current swap space looks like
>>this:
>>
>># /sbin/swapon -s
>>Swap partition /dev/rz0b (default swap):
>> Allocated space: 16384 pages (128MB)
>> In-use space: 2648 pages ( 16%)
>> Free space: 13736 pages ( 83%)
>>
>>
>>Total swap allocation:
>> Allocated space: 16384 pages (128MB)
>> Reserved space: 4017 pages ( 24%)
>> In-use space: 2648 pages ( 16%)
>> Available space: 12367 pages ( 75%)
>>
>>
>>After I install the new SIMMs what do I have to do to the swap space?
>>
>>
>>Finally, are there any things that aren't obvious that I need to know
about
>>when upgrading memory. I've done this on other operating systems without
a
>>problem but never on a unix system. It seems like this should be a
simple
>>process but I've been surprised in the past and am suspicious that this
>>might not be as simple as it seems.
Bill Bergman
Westinghouse Communications
(412) 247-6206
wrb_at_wcsmail.com
Received on Thu Apr 17 1997 - 16:06:27 NZST