… that allows IRP to be allocated from one of the “precreated” IRP pools?
TIA,
Vladimir
That limit is infinite. Earlier versions of Windows used fixed-size pools,
but current versions will dynamically resize the large irp pool as needed.
Regards,
Tony
Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http: http://www.osr.com
Hope to see you at the next OSR file systems class October 7, 2002!
-----Original Message-----
From: Chtchetkine, Vladimir [mailto:xxxxx@starbase.com]
Sent: Wednesday, April 10, 2002 2:51 PM
To: File Systems Developers
Subject: [ntfsd] What is maximim IRP stack location number…
… that allows IRP to be allocated from one of the “precreated” IRP pools?
TIA,
Vladimir
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What is maximim IRP stack location number…IIRC 1 or 4. Two IRP lookasides.
Max
----- Original Message -----
From: Chtchetkine, Vladimir
To: File Systems Developers
Sent: Wednesday, April 10, 2002 10:51 PM
Subject: [ntfsd] What is maximim IRP stack location number…
… that allows IRP to be allocated from one of the “precreated” IRP pools?
TIA,
Vladimir
You are currently subscribed to ntfsd as: xxxxx@storagecraft.com
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What is maximim IRP stack location number…In the book “Inside w2k” by Solomon/Russinovich they said that max IRP stack location number is 1 or 8.
Actually 2 IRP lookasides and if need more then 8 IRP stacks, memory allocates from nonpaged pool.
Valery
You wrote to “File Systems Developers” on Thu, 11 Apr 2002 01:34:02 +0400:
MSS> What is maximim IRP stack location number…IIRC 1 or 4. Two IRP
MSS> lookasides.
MSS> Max
It is a very bad idea to rely upon the size of these data structures. It
varies BY OS VERSION. It could change dynamically during system operation.
Regards,
Tony
Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com http:
-----Original Message-----
From: Valery A. Boronin [mailto:xxxxx@novosoft.ru]
Sent: Thursday, April 11, 2002 1:37 PM
To: File Systems Developers
Subject: [ntfsd] Re: What is maximim IRP stack location number…
In the book “Inside w2k” by Solomon/Russinovich they said that max IRP stack
location number is 1 or 8.
Actually 2 IRP lookasides and if need more then 8 IRP stacks, memory
allocates from nonpaged pool.
Valery
You wrote to “File Systems Developers” on Thu, 11 Apr
2002 01:34:02 +0400:
MSS> What is maximim IRP stack location number…IIRC 1 or 4. Two IRP
MSS> lookasides.
MSS> Max
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Concerning this discussion:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\I/O System
LargeIrpStackLocations REG_DWORD 7
Is it not the size of IRPs on the second lookaside?
Max
----- Original Message -----
From: “Tony Mason”
To: “File Systems Developers”
Sent: Thursday, April 11, 2002 9:44 PM
Subject: [ntfsd] Re: What is maximim IRP stack location number…
> It is a very bad idea to rely upon the size of these data structures. It
> varies BY OS VERSION. It could change dynamically during system operation.
>
> Regards,
>
> Tony
>
> Tony Mason
> Consulting Partner
> OSR Open Systems Resources, Inc.
> http://www.osr.com http:
>
> -----Original Message-----
> From: Valery A. Boronin [mailto:xxxxx@novosoft.ru]
> Sent: Thursday, April 11, 2002 1:37 PM
> To: File Systems Developers
> Subject: [ntfsd] Re: What is maximim IRP stack location number…
>
> In the book “Inside w2k” by Solomon/Russinovich they said that max IRP stack
> location number is 1 or 8.
> Actually 2 IRP lookasides and if need more then 8 IRP stacks, memory
> allocates from nonpaged pool.
> Valery
>
> You wrote to “File Systems Developers” on Thu, 11 Apr
> 2002 01:34:02 +0400:
>
> MSS> What is maximim IRP stack location number…IIRC 1 or 4. Two IRP
> MSS> lookasides.
>
> MSS> Max
> —
> You are currently subscribed to ntfsd as: xxxxx@osr.com
> To unsubscribe send a blank email to %%email.unsub%%
>
> —
> You are currently subscribed to ntfsd as: xxxxx@storagecraft.com
> To unsubscribe send a blank email to %%email.unsub%%
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