Does Ready Boost use a lot of CPU?

[Guest]

I have a 2 gig flash drive that vista says is usable for Ready Boost and I
have allowed vista to allocate the recommended amount on the drive.
As soon as I plug it in my CPU which was at 5% goes crazy. Jumping from 8
to 50% constantly.
It seems that my performance has actually decreased. Is this possible?
As soon as I unplug the flash drive my CPU settles down to 5%.
Specs:
Microprocessor 2.0 GHz AMD Turionâ„¢ 64 Mobile Processor ML-37 with
PowerNow!â„¢ Technology
Microprocessor Cache 1MB L2 Cache
Memory 2048MB 333MHz DDR System Memory (2 Dimm)
Video Graphics ATI RADEON® XPRESS 200M IGP
Video Memory 128MB DDR (shared)
Hard Drive 120GB (4200RPM) Hard Drive

 

[AJR]

How are you checking usage? By the Performance Monitor or the CPU "gadget"?

 

[Byron Hinson]

The first time you plug it in (its best just left in) it creates the cache
which bumps up the CPU speed. Certainly for the first 10/15 minutes or so of
having a new ReadyBoost stick the CPU will go up and down as it also runs
alongside SuperFetch

 

[Guest]

Byron,

Thank you! Good to know. It's been driving me crazy. I searched everywhere
for info about this.
Is there anything else I should know? Will it behave with lots of CPU
activity after every boot?

 

[Guest]

If you never take that USB drive out, you'll have good boost performance with
it until you take it out again, even across reboots (although shortly after
login after a reboot, it will be working on the cache creation... but it'll
be fine). The CPU usage spike is worth it. I ran RC2 on a not-quite-new (2
years old) low-end (well, by todays standards -- 2.5ghz p4 and 1 gb ram) HP
laptop, and my 1gb flash drive did wonders with readyboost.

- skeene

 

[Guest]

Shawn,

All is well with Ready boost but its use causes this error in my event
viewer after resuming from a "sleep" state. Not a big problem, just a
nuisance.

Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 11/02/2007 6:06:44 AM
Event ID: 351
Task Category: Standby Performance Monitoring
Level: Error
Keywords: Event Log
User: LOCAL SERVICE
Computer: Compaq
Description:
This driver responded slower than expected to the resume request while
servicing this device:
Driver File Name : \Driver\WUDFRd
Driver Friendly Name : Windows Driver Foundation - User-mode Driver
Framework Reflector
Driver Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Driver Total Time : 606ms
Driver Degradation Time : 206ms
Incident Time (UTC) : 11/02/2007 12:06:42 PM
Device
Name : WpdBusEnumRoot\UMB\2&37c186b&0&STORAGE#VOLUME#1&19F7E59C&0&_??_FLASHMEDIA#SDDEVICE3#5&154272BB&1&001#
Device Friendly Name : Microsoft WPD FileSystem Volume Driver
Device Total Time : 606ms
Device Degradation Time : 206ms