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Windows 7: Tweaking boot time (classpnp.sys?)


06 Aug 2010   #1

Windows 7 Home Premium (x64)
 
 
Tweaking boot time (classpnp.sys?)

I'm looking for ways to reduce my reboot time (102 seconds according to this script). I've pruned BIOS routines and startup items, which leaves the bit in the middle.

I realise on HDDs (3 x F3s in RAID0; 6.1 WEI; 350MB/s sequentials) I'll never see the sub-60 second reboot times of SSDs, but I get the feeling Windows is dithering when it hits classpnp.sys (the last driver I see loading).

Since \Windows\ntbtlog.txt has no time stamps I'm testing with safe mode so I can watch the drivers as they load. Everything up to classpnp has no delay, loading about 10 per second, but after this final driver there's ~35 seconds of no HDD activity before a black screen then welcome screen.

Short of unplugging loads of hardware, is there a way I can analyse what it's doing?

Cheers

My System SpecsSystem Spec
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06 Aug 2010   #2

Windows Server 2008 R2
 
 

Normally I wouldn't just link to a site outside of sevenforums, but this is not a shameless plug - there's a very good thread on MSFN's forums on how to use xperf to trace boot time issues (amongst other things) here that you might want to have a look at.
My System SpecsSystem Spec
07 Aug 2010   #3

Windows 7 Profession 64-bit
 
 

Your computer boots in less than 2 minutes and you are complaining? Why? There's nothing wrong with 102 seconds, especially with a RAID. And besides, longer boot times are no indication of system performance once the system is booted - and that's where it counts.
My System SpecsSystem Spec
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07 Aug 2010   #4

Windows 7 Home Premium (x64)
 
 

Quote   Quote: Originally Posted by cluberti View Post
Normally I wouldn't just link to a site outside of sevenforums, but this is not a shameless plug - there's a very good thread on MSFN's forums on how to use xperf to trace boot time issues (amongst other things) here that you might want to have a look at.
Thanks for that, some very detailed info it spits out!

Quote   Quote: Originally Posted by Digerati View Post
Your computer boots in less than 2 minutes and you are complaining? Why? There's nothing wrong with 102 seconds, especially with a RAID. And besides, longer boot times are no indication of system performance once the system is booted - and that's where it counts.
Doesn't everyone here (this section at least!) strive to get 7 running best as possible? Even when I briefly had an SSD (RealSSD 256GB - died on day 1) it was a disappointing 89 seconds, up to triple the time of some of these times.
My System SpecsSystem Spec
07 Aug 2010   #5

Windows Server 2008 R2
 
 

Wow. I've got a rather "old" setup (admittedly 2x WD Raptor 10K 74GB drives for the OS) that boots in ~45 seconds, from right after the POST to usable desktop. 102 seconds is a long time, even for a single-drive system - sounds like either your filesystem isn't configured for the correct cluster size, or you have a ton of boot drivers, or services starting automatic, etc. 102 seconds isn't "bad", but it's not good either.
My System SpecsSystem Spec
07 Aug 2010   #6

Windows 7 Profession 64-bit
 
 

Quote:
Doesn't everyone here (this section at least!) strive to get 7 running best as possible?
"Running" yes, but boot times is not an indication of performance! And it is immaterial once the system boots completely. And I disagree with cluberti's comment that 102 is not good. Once again you are setting up a RAID during boot and that is a big thing. Also we don't know what else you are loading at start - and that depends entirely on your specific hardware configuration. Many systems take 3 or 4 minutes or longer to fully boot and load up everything at start.

Once again, performance after the full boot is the key factor in determining system performance. After all, most people only boot once a day, if that.
My System SpecsSystem Spec
08 Aug 2010   #7

win7
 
 

[QUOTE=Digerati;886546]
Quote:
. Once again you are setting up a RAID during boot and that is a big thing. .

Is the raid not in hardware, most motherboards have onboard raid these days, my raid needs nothing, its even visible from a cd boot.
My System SpecsSystem Spec
08 Aug 2010   #8

Windows 7 Profession 64-bit
 
 

Quote:
my raid needs nothing
Not true! It is setup in the BIOS and is loaded every time it boots.
My System SpecsSystem Spec
08 Aug 2010   #9

Windows 7 Home Premium (x64)
 
 

It does add 10-15s to my boot time, not much I can do about that.
My System SpecsSystem Spec
08 Aug 2010   #10

 

IMHO, if it takes more than one minute to boot after POST, either something is wrong or there are too many processes running at startup. I have yet to see a system capable of running 7 that I couldn't tweak to boot in less than a minute without reducing any of it's functionality
My System SpecsSystem Spec
Closed Thread

 Tweaking boot time (classpnp.sys?)




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