ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 255

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
9.5: POOLS User Threshold and Client Active Packet Count Array
The POOLS User Threshold and Client Active Packet Count Array holds the user thresholds and active
pointer counts for each of the 16 managed pools and four (five) pointer sizes.
When a Get Pointer primitive is processed, the active count is retrieved and compared with the threshold
counts. If it falls within bounds and a pointer is available, the active count will be incremented by one reflect-
ing the additional buffer charged to that queue.
When a Free Pointer primitive is processed, the active count is retrieved, and, when the pointer is returned to
the free list, the active buffer count is decremented by one.
The user threshold may be used to check on resource utilization as opposed to resource allocation. The
Guaranteed and Total Thresholds are used when allocating resources to make decisions. The User Thresh-
old is not used to govern resource allocation directly. One such use is for high water mark indication. When a
Free Pointer primitive is processed or a Get Pointer is processed The active packet count is compared to the
user threshold. If the event interface is enabled and a boundary condition is crossed an event is issued to the
event interface.
Length
Type
Address
Power on Value
Restrictions
pnr25.chapt04.01
August 14, 2000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31-16
Bit(s)
15-0
User Threshold
Active Packet Count
User Threshold
32 bits x 16 Words
Read/Write
Buffer Size 0
Buffer Size 1
Buffer Size 2
Buffer Size 3
Virtual Packets/
Buffer Size 4
X’00000000’
None
XXXX 3600
XXXX 3640
XXXX 3680
XXXX 36C0
XXXX 3700
Description
IBM Processor for Network Resources
Active Packet Count
9
8
Buffer Pool Management (POOLS)
7
6
5
4
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