CRYACC – Crypto Accelerator Activity Report

The cryptographic accelerator (CRYACC) activity report is used to investigate performance problems that are related to the usage of cryptographic hardware configured in accelerator mode.

How to request this report

To request the Crypto accelerator activity report, select S from the Primary Menu, then select 17 from the Sysplex Report Selection Menu (shown in Figure 1) or enter one of the following commands:

CRYACC
CRA

Contents of the report

For each cryptographic accelerator card in the sysplex, the cryptographic accelerator activity (CRYACC) report provides measurements about public key operations (RSA cryptography operations), both at the CPC and LPAR (cryptographic usage domain) level. The data for cryptographic accelerators is showing details for the two available algorithms, modular exponentiation (ME) and Chinese Remainder Theorem (CRT) for available key lengths (1024, 2048, and 4096 bit). Displayed are the rate at which requests are processed by an adapter card, the average execution time, and the utilization percentage.

Figure 1. Crypto Accelerator Activity Report



                    RMF 3.1  Crypto Acc Activity - ENGTEST3       Line 1 of 15
 Command ===>                                                  Scroll ===> CSR  
                                                                                
 Samples: 100     Systems: 4    Date: 04/25/2023  Time: 06.00.00  Range: 100   Sec
                                                                                
 Type   ID  --CPC---  -System-  -Key  ----- ME RSA -----   ---- CRT RSA -----   
                                 Len   Rate ExTime Util%    Rate ExTime Util%   
                                                                                
 CEX6A   9  M88                 1024   2705  0.023   6.1   64.25  0.078   0.5   
 CEX6A   9  M88                 2048  223.7  0.040   0.9   274.6  0.334   9.2   
 CEX6A   9  M88                 4096  661.6  0.122   8.0    1308  0.593  77.6   
 CEX6A   9  M88       S24       1024   2486  0.012   2.9   0.000  0.000   0.0   
 CEX6A   9  M88       S24       2048  0.000  0.000   0.0   0.000  0.000   0.0   
 CEX6A   9  M88       S24       4096  0.000  0.000   0.0   0.000  0.000   0.0   
 CEX6A   9  M88       S25       1024  218.5  0.147   3.2   64.25  0.078   0.5   
 CEX6A   9  M88       S25       2048  223.7  0.040   0.9   274.6  0.334   9.2   
 CEX6A   9  M88       S25       4096  661.6  0.122   8.0    1308  0.593  77.6   
 CEX3A   5  P88                 1024  0.000  0.000   0.0    5472  0.129  70.8   
 CEX3A   5  P88                 2048  0.000  0.000   0.0   0.000  0.000   0.0   
 CEX3A   5  P88                 4096  0.000  0.000   0.0   0.000  0.000   0.0   
 CEX5A   9  S89                 1024  0.000  0.000   0.0   0.000  0.000   0.0   
 CEX5A   9  S89                 2048  0.000  0.000   0.0   147.8  0.522   7.7   
 CEX5A   9  S89                 4096  0.000  0.000   0.0   673.0  1.371  92.2

Field descriptions

Table 1. Fields in the Cryptographic accelerator activity Report
Field Heading	Meaning
Type	Type that defines the cryptographic accelerator: Type Meaning CEX3A Crypto Express3 Accelerator. CEX4A Crypto Express4S Accelerator. CEX5A Crypto Express5S Accelerator. CEX6A Crypto Express6S Accelerator. CEX7A Crypto Express7S Accelerator.
ID	Index that specifies the cryptographic hardware function.
CPC	Name of the CPC that used the cryptographic hardware function with the respective ID.
System	Name of the partition that used the cryptographic hardware function with the respective ID.
Key Len	RSA key length for each cryptographic accelerator and for each available RSA operation format (ME or CRT).
ME RSA	Rate, average execution time (in milliseconds), and utilization percentage of all operations in ME-format (one line for each used RSA key length).
CRT RSA	Rate, average execution time (in milliseconds), and utilization percentage of all operations in CRT-format (one line for each used RSA key length).

Cursor-sensitive control on the CRYACC Report

Cursor-sensitivity on any value in the tabular part of the report links back to the Cryptographic Hardware Overview (CRYOVW) report for total numbers, showing only the lines for cryptographic accelerator functions.

Cursor-sensitive control of the sysplex name and of the Systems field in the report header leads to the Data Index screen.

Report options

The Report Options panel is exactly the same as for the CRYOVW report shown in Figure 2. The only difference is, that the Function report option is ignored in the CRYACC report.