How to calculate transaction units per second (TPS)

TPS can be calculated for IPGW, IPLIM, and IPSG cards. If E5-ENET-B cards are used as IPSG cards, then the TPS is calculated depending on whether the E5-ENET-B IPSG High Throughput feature is ON or OFF.

• Calculating TPS for IPGW and IPLIM Cards
• Calculating TPS for IPSG Cards: E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET
• Calcuating TPS for IPSG Cards: E5-ENET-B IPSG High Throughput Feature ON

Calculating TPS for IPGW and IPLIM Cards

Refer to Table 5-12 to follow the process.

1. Determine which application will carry the traffic (IPGWx, IPLIMx).
2. Determine the adapter protocol type of the association(s) that will carry the traffic. For IPGW and IPLIM cards the adapter is always M3UA.
3. Determine how many distinct categories of traffic will be carried by the card. Characteristics that distinguish categories include:
   • Average SIF size
   • Whether or not the traffic is monitored (all rows have monitoring by E5IS)
   • How many connections per card will carry the traffic (2)
   • Whether Signal Transfer Point SLAN or SCCP Conversion is applied to the traffic (3)

   Distinct traffic categories are identified by rows (A, B).

4. Select the TU value that applies to each distinct category of traffic (6)
5. If the total bi-directional MSU rate of each category ((A7), (B7)) is known in advance, then the:
   • Total TU rate for a category = MSU rate x TU value ((A7) x (A6))
   • Total TU rate to be carried by the card = Sum of all TU rates of the traffic categories ((A6) x (A7) + (B6) x (B7))

   Then compare that value to the Base Card Capacity (7).

6. If the fraction of total traffic that applies to each category is known, then the maximum total MSU rate, that is, the actual Advertised Capacity, can be determined by dividing the Base Advertised Capacity (7) by the total TU value of the traffic mix (6).

Table 5-12 Calculating TPS for IPGW and IPLIM Cards

	1 MSU SIF Size	2 # of Open Conns (1)	3 SLAN and/or SCCP Conver- sion	4 Base TU	5 Adjust- ment	6 Total TU	7 Max MSU/s 2000	Max MSU/s 4000	Max MSU/s 5000(2)
A	0..140	<=8	No	1.0	0.43	1.43	1400	2800	3500
	0..140	<=8	Yes	1.0	0.67	1.67	1200	2400	3000
	0..140	>8	No	1.0	0.82	1.82	1100	2200	2750
	0..140	>8	Yes	1.0	1.00	2.00	1000	2000	2500
	141..272	<=8	No	1.43	0.80	2.23	900	1800	2250
B	141..272	<=8	Yes	1.43	1.24	2.67	750	1500	1875
	141..272	>8	No	1.43	1.65	3.08	650	1300	1620
	141..272	>8	Yes	1.43	1.91	3.34	600	1200	1500

^Footnote 1 Open Connections and Active SLKs are not always synonymous, depending on the GPL. For IPLIM, one SLK equals one connection. For IPGW, one SLK can equal up to 50 connections. For IPSG, one connection equals at least one SLK.

^Footnote 2 E5IS Data Feed refers to STC-style monitoring. Fast Copy does support Large MSUs and has a zero transaction unit cost.

Calculating TPS for IPSG Cards: E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET

Refer to Table 5-13 to follow the process:

1. Determine whether an E5-ENET or E5-ENET-B card is used.
2. Determine the adapter protocol type of the association(s) that will carry the traffic .
3. Determine how many distinct categories of traffic will be carried by the card. Characteristics that distinguish categories include:
   • Average SIF size (1)
   • Whether or not traffic is monitored
   • How many connections per card will carry the traffic (2)
   • Whether Signal Transfer Point SLAN or SCCP Conversion applies to the traffic (4)
   • Whether the MSU is copied by E5IS Data Feed (5)

   Distinct traffic categories are identified by rows (A, B)

4. Select the TU value that applies (7).
5. The maximum total MSU rate, (actual Advertised Capacity), can be determined by dividing the Max MSU/s for the card by the total TU (7).

Table 5-13 Calculating TPS for IPSG Cards: E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET

	1MSU SIF Size	2Number of links	3Protocol	4MSU Triggers SLAN or SCCP copy	5MSU Copied by E5IS Data Feed	6 TU Adjust- ment Factor	7Total TU	8Max MSU/s 5000 (E5- ENET)	9Max MSU/s 6500 (E5- ENET-B)
A	0..160	<=16	M2PA	No	No	0	1.0	5000	6500
	0..160	<=16	M3UA	No	No	0	1.0	5000	6500
	0..160	<=16	M2PA	Yes	No	0.00143 * MSU Size	1 + (0.00143 * MSU Size)	-- (MSU size dependent)	5687
	0..160	<=16	M3UA	Yes	No	0.00143 * MSU Size	1 + (0.00143 * MSU Size)	-- (MSU size dependent)	5687
	0..160	<=16	M2PA	No	Yes	0.43	1.43	3496	4545
	0..160	<=16	M3UA	No	Yes	0.43	1.43	3496	4545
	0..160	>16	M2PA	No	No	0.135	1.135	4405	5727
	0..160	>16	M3UA	No	No	0.135	1.135	4405	5727
B	161..272	<=16	M2PA	No	No	0.15	1.15	4348	5652
	161..272	<=16	M3UA	No	No	0.15	1.15	4348	5652
	161..272	<=16	M2PA	Yes	No	0.00143 * MSU Size	1 + (0.00143 * MSU Size)	-- (MSU size dependent)	5687
	161..272	<=16	M3UA	Yes	No	0.00143 * MSU Size	1 + (0.00143 * MSU Size)	-- (MSU size dependent)	5687
	161..272	<=16	M2PA	No	Yes	0.43	1.43	3496	4545
	161..272	<=16	M3UA	No	Yes	0.43	1.43	3496	4545
	161..272	>16	M2PA	No	No	0.15	1.15	4348	5652
	161..272	>16	M3UA	No	No	0.15	1.15	4348	5652

Calcuating TPS for IPSG Cards: E5-ENET-B IPSG High Throughput Feature ON

Refer to Table 5-14 to follow the process for an IPSG card when the E5-ENET-B IPSG High Throughput feature is turned on.

1. Determine whether the card meets the standards shown in Table 5-5. If the card does not meet the optimized configuration, determine whether the card is being de-rated.
2. Determine the adapter protocol type of the association(s) that will carry the traffic (4).
3. Select the TU value that applies (6).
4. The maximum total MSU rate, (actual Advertised Capacity), can be determined by dividing the Max MSU/s for the card by the total TU (6).

Table 5-14 Calculating TPS for E5-ENET-B IPSG Cards: E5-ENET-B IPSG High Throughput Feature ON

1 Avg MSU SIF size (excluding large MSUs)	2Association Round Trip Time RTT (ms)	3Number of Links	4Protocol	5TU Adjust- ment Factor	6Total TU	8Max MSU/s 5000 (E5- ENET)	7Max MSU/s 9500(E5- ENET-B)
0..120	<=50	<=4	M2PA	0	1.0	5000	9500
0..120	<=50	<=4	M3UA	0.05	1.05	5000	9048
160	<=50	<=4	M2PA	0.048	1.048	5000	9065
1..120	70	<=4	M3UA	0.13	1.13	5000	8407
1..120	<=50	8	M2PA	0.025	1.025	5000	9268
150	90	16	M3UA	0.281	1.281	5000	7416