Re: SPSS slow opening - I did some tests...

[Jeff A]

For those interested in the v25 opening speed issue...

Coincidently, I was in the process of reinstalling my W10 operating system
and reinstalling all applications on my home computer when this thread
started, so I was able to quickly make a few comparisons of opening speeds
with two different hard drive systems since I still had my old OS with SPSS
25 installed on my 3 SSD drive Raid 5 system for the original system after I
reinstalled everything to a single (larger) solid stated drive (SSD). So I
could simply switch the systems to make nearly equal comparisons of the SPSS
v25 opening speeds.  

There were huge differences with initial opening speeds but nothing
substantial on subsequent opening speeds.

On the new system that has only a single SSD drive:
SPSS v25 FP1:
Initial opening speed was 1 minute 5 seconds.
Subsequent opening speed was about 7 seconds.
Both measured from the time I clicked on the SPSS icon from the applications
list to the appearance of the empty data-editor window (e.g., I wasn't
opening a dataset or syntax file to start SPSS).
I already had FP1 installed, so couldn't test without it.

On the old system (exactly the same computer, same hardware other than the
hard drive):
SPSS v25 without FP1:
Initial opening speed was around 8 to 9 seconds.
Subsequent opening speed was around 7-8 seconds.

SPSS v25 on the old system after I installed FP1:
Initial opening speed was around 13 seconds
Subsequent opening speed was around 7-8 seconds.
(so FP1 slowed down the initial opening by several seconds, but it was still
fast)

Again, both SPSS installations were on same computer with the exact same
hardware other than the 3 SSD drive RAID 5 on my old OS install and a single
(new) SSD on the new OS install. The machine is an i5-2500 3.3 GHz 4 core
with 16 GB of Corsair DDR3 1600MHz RAM that was a relatively fast RAM when I
built this machine about 7 years ago. The SPSS installs were both release
25.0.0.1

I ran a CrystalDiskMark HD speed test that claimed that the old RAID 5
system with 3 SSDs was running around 700 MB/Sec read and 553 write. The new
single SSD drive was 553 MB/Sec read and 264 write.

The bottom line regarding HD speed is that a 700 MB/sec RAID 5 SSD HD system
took SPSS v25FP1 only 13 seconds to load
while a single 553 MB/sec SSD took 65 seconds to load on the exact same
computer.

The much newer NVMe M.2 hard drives that Tim mentioned he's running are
supposed to run around 3,500 MB/sec and he's getting 1 plus minute loads,
however.

The fact that I'm getting faster load speeds on both systems than many
others might be due to faster RAM (this is a home-built machine, not a
factory machine - I spec'ed the components myself around 7 plus years ago -
they were mostly mid-range components), but the HD system definitely had a
very substantial impact on the load times (RAID5 decreased the speed from 65
seconds down to 13 seconds). So much different that I'll likely clone the
new OS/Program install back to the RAID-5 (which was running out of storage
space) after I finish with all of my program installs. Another issue may be
whether anti-virus software might be slowing things down on some people's
computers - but I had Avast running on the old (faster) system, but haven't
yet installed on the new (slower) system yet. For some reason, FP2 isn't
available to me from my university, so I didn't install that on either
system.

Jeff













-----Original Message-----
From: SPSSX(r) Discussion <[hidden email]> On Behalf Of J.D.
Haltigan
Sent: Wednesday, March 20, 2019 10:21 PM
To: [hidden email]
Subject: Re: SPSS slow opening

Everything Tim said well put. I would also surmise most folks using SPSS
aren't running RAID multi-drive systems although there will be substantial
variation in the quality of the 'average' system it is running on. I myself
have an SSD (single SSD) on a fairly strong i7 laptop system and it takes 1
minute + cold opening so I mostly just leave it on when using it, but I
don't prefer that course of action for several reasons.

In contrast, opening Mplus or R is like under 10 seconds, every single time.




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