A fix is available
APAR status
Closed as new function.
Error description
new function
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: RMF users. * **************************************************************** * PROBLEM DESCRIPTION: RMF support for Synchronous I/O Link * * Statistics. * * * * Following RMF reports were changed: * * - Postprocessor Enterprise Disk * * Systems (ESS) * * - Postprocessor Cache Subsystem * * Activity (CACHE) * * * * Following SMF records are modified: * * - SMF 74 subtype 5: RAID rank/ * * Extent pool Data Section * * - SMF 74 subtype 8: Synchronous I/O * * Link Statistics Data Section added * **************************************************************** * RECOMMENDATION: * **************************************************************** New function APAR to provide RMF support for Synchronous I/O Link statistics. +--------------------------------------------------------------+ >>>>>>>>>> POSTPROCESSOR CACHE ACTIVITY REPORT <<<<<<<<<<<<<< The Postprocessor Cache Activity report is enhanced to report synchronous I/O cache request statistics. Added report fields in a new SYNCH I/O ACTIVITY section: SYNCH I/O ACTIVITY REQ/SEC The average number of synchronous I/O read and write requests per second. HITS/REQ Ratio of cache hits for synchronous I/O read and write requests. >>>>>>>>>>>>>>>>> POSTPROCESSOR ESS REPORT <<<<<<<<<<<<<<<<<<< The Postprocessor Enterprise Disk Systems report is enhanced to provide statistics about the occurred synchronous I/O operations on defined synchronous I/O links in a new ESS Synchronous I/O Link Statistics report section. Fields in the new report section: SIID Synchronous I/O link identifier. LINK TYPE Combined presentation of synchronous I/O link type (e.g. Optical PCIe), link speed (e.g. Gen1) and link width by number of PCIe lanes (e.g. 8). CACHE READ OPERATIONS OPS/SEC Number of synchronous I/O cache read operations per second. BYTES/OP Average number of bytes read per synchronous I/O cache read operation. RTIME/OP Average response time (in milliseconds) per synchronous I/O cache read operation. %SUCC Percentage of synchronous I/O cache read operations that performed successfully. CACHE WRITE OPERATIONS OPS/SEC Number of synchronous I/O cache write operations per second. BYTES/OP Average number of bytes written per synchronous I/O cache write operation. RTIME/OP Average response time (in milliseconds) per synchronous I/O cache write operation. %SUCC Percentage of synchronous I/O cache write operations that performed successfully. NVS WRITE OPERATIONS OPS/SEC Number of synchronous I/O write operations to the NVS node per second. BYTES/OP Average number of bytes written per NVS write operation. RTIME/OP Average response time (in milliseconds) per NVS write operation. %SUCC Percentage of NVS write operations that performed successfully. +-------------------------------------------------------------- >>>>> SMF RECORD TYPE 70 TO 79 - RMF PRODUCT SECTION <<<<< The SMF record level change number SMFxxSRL at offset 51 (x33) changes to 131 (x83) The Header/Self-defining section for SMF record type 74 is extended by a new triplet: OFFSET NAME LEN FORMAT DESCRIPTION 76 4Cx SMF748SO 4 binary Offset to Synchronous I/O Link Statistics data section. 80 50x SMF748SL 2 binary Length of Synchronous I/O Link Statistics data section. 82 52x SMF748SN 2 binary Number of Synchronous I/O Link Statistics data sections. >>>>> SMF RECORD TYPE 74 SUBTYPE 5 - CACHE ACTIVITY <<<<< Field descriptions in the RAID rank/ Extent pool Data section are added or changed: OFFSET NAME LEN FORMAT DESCRIPTION ... 2 x2 R7451INC 1 binary Flag Bit Meaning when set 0-2 Reserved. 3 Synchronous I/O cache data are valid. .... 104 X68 R7451SRR 4 s-float Number of synchronous I/O cache read requests. (Valid if bit 3 of R7451INC is set.) 108 X6C R7451SRH 4 s-float Number of synchronous I/O cache read request hits. (Valid if bit 3 of R7451INC is set.) 112 X70 R7451SWR 4 s-float Number of synchronous I/O cache write requests. (Valid if bit 3 of R7451INC is set.) 120 X74 R7451SWH 4 s-float Number of synchronous I/O cache write request hits. (Valid if bit 3 of R7451INC is set.) >>>>> SMF RECORD TYPE 74 SUBTYPE 8 - ESS ACTIVITY <<<<< A new Synchronous I/O Link Statistics data section is added. There is one section per synchronous I/O link. Field descriptions in the new section are: OFFSET NAME LEN FORMAT DESCRIPTION 0 x0 R748SIID 2 binary Synchronous I/O link interface ID. 2 x2 R748STYP 1 binary Synchronous I/O link type. Value Meaning 00 Not used 01 Optical PCIe 02-FF Not used 3 x3 R748SSPD 1 binary Synchronous I/O link speed. Value Meaning 00 Not used 01 PCIe Gen 1 02 PCIe Gen 2 03 PCIe Gen 3 04 PCIe Gen 4 05-FF Not used 4 x4 R748SWDH 1 binary Synchronous I/O link width. This number is the number of PCIe lanes. 5 x5 R748SSTE 1 binary Synchronous I/O link state. Value Meaning 00 Not used 01 Link not Trained 02 Link handshake incomplete 03 Link handshake complete and link operational 04 Link in service mode (i.e. link quiesced) 05-FF Not used 6 x6 R7451INC 1 binary Flag Bit Meaning when set 0 Unit of bytes indeterminable. Byte values incorrect. 1 Unit of time indeterminable. Time values incorrect. 7 x7 1 Reserved. 8 x8 R748SCBR 8 l-float Synchronous I/O cache bytes read in units of 128K bytes. 16 x10 R748SCRO 8 l-float Total number of synchronous I/O cache read operations. 24 x18 R748SCRS 8 l-float Number of successful synchronous I/O cache read operations. 32 x20 R748SCRT 8 l-float Synchronous I/O cache read accumulated time in milliseconds. 40 x28 R748SCBW 8 l-float Synchronous I/O cache bytes written in units of 128K bytes. 48 x30 R748SCWO 8 l-float Total number of synchronous I/O cache write operations. 56 x38 R748SCWS 8 l-float Number of successful synchronous I/O cache write operations. 64 x40 R748SCWT 8 l-float Synchronous I/O cache write accumulated time in milliseconds. 72 x48 R748SNBW 8 l-float NVS bytes written in units of 128K bytes. 80 x50 R748SNWO 8 l-float Total number of NVS write operations. 88 x58 R748SNWS 8 l-float Number of successful NVS write operations. 96 x60 R748SNWT 8 l-float NVS write accumulated time in milliseconds. >>>>>>>>>>>>> POSTPROCESSOR OVERVIEW CONDITIONS <<<<<<<<<<<<<<< Overview conditions provided for SMF record type 74 subtype 5: Following synchronous I/O related conditions are added : Condition CondName Qualifier Source Algorith --------------------------+--------+----------+--------+------- Synch I/O Activity - Read Requests per Second CASSRR SSID(ssid) R7451SRR SRR/INT CADSRR DEVN(devn) Read Hit Rate CASSRH SSID(ssid) R7451SRH SRH/SRR CADSRH DEVN(devn) R7451SRR Write Requests per Second CASSWR SSID(ssid) R7451SRR SWR/INT CADSWR DEVN(devn) Write Hit Rate CASSWH SSID(ssid) R7451SWH SWH/SWR CADSWH DEVN(devn) R7451SWR Overview conditions provided for SMF record type 74 subtype 8: A new qualifier is defined: siid Synchronous I/O link interface ID Following synchronous I/O related conditions are added : Condition CondName Qualifier Source Algorith --------------------------+--------+----------+--------+------- Synch I/O Cache Read ESSOSCR SERN(sern) R748SCRO CRO/INT Operations per Second SIID(siid) Synch I/O Cache Write ESSOSCW SERN(sern) R748SCWO CWO/INT Operations per Second SIID(siid) Synch I/O NVS Write ESSOSNW SERN(sern) R748SNWO NWO/INT Operations per Second SIID(siid) Number of Bytes per ESSBOCR SERN(sern) R748SCBR CBR/CRO Synch I/O Cache Read OP SIID(siid) R748SCRO Number of Bytes per ESSBOCW SERN(sern) R748SCBW CBW/CWO Synch I/O Cache Write OP SIID(siid) R748SCWO Number of Bytes per ESSBONW SERN(sern) R748SNBW NBW/NWO NVS Write Operation SIID(siid) R748SNWO Average Response Time per ESSRTOCR SERN(sern) R748SCRT CRT/CRO Synch I/O Cache Read OP SIID(siid) R748SCRO Average Response Time per ESSRTOCW SERN(sern) R748SCWT CWT/CWO Synch I/O Cache Write OP SIID(siid) R748SCWO Average Response Time per ESSRTONW SERN(sern) R748SNWT NWT/NWO Synch I/O NVS Write OP SIID(siid) R748SNWO Percentage of Successful ESSPSOCR SERN(sern) R748SCRS CRS/CRO Synch I/O Cache Read OPs SIID(siid) R748SCRO *100 Percentage of Successful ESSPSOCW SERN(sern) R748SCWS CWS/CWO Synch I/O Cache Write OPs SIID(siid) R748SCWO *100 Percentage of Successful ESSPSONW SERN(sern) R748SNWS NWS/NWO Synch I/O NVS Write OPs SIID(siid) R748SNWO *100
Problem conclusion
Temporary fix
Comments
KEYWORDS: E3906/K SMFREC/K
APAR Information
APAR number
OA53411
Reported component name
RMF
Reported component ID
566527404
Reported release
790
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2017-07-17
Closed date
2018-01-25
Last modified date
2018-03-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UA95094 UA95095 UA95096
Modules/Macros
ERBCRBWS ERBCRSRS ERBCRSSS ERBDUCAC ERBDUESS ERBEXBLT ERBEXCAC ERBEXCHA ERBEXCIT ERBEXDEV ERBEXESS ERBEXIGQ ERBEXIOQ ERBEXWKL ERBLISTO ERBMFASR ERBMFBSR ERBMFDCR ERBMFDCX ERBMFICR ERBMFIZS ERBMFLBV ERBMFLZV ERBMFPDU ERBMFPER ERBMFPIR ERBMFQOP ERBMFRCA ERBMFRCC ERBMFRCM ERBMFRCO ERBMFRCS ERBMFRC1 ERBMFRDR ERBMFRSS ERBMFTCR ERBMFXCB ERBPCTBL ERBPPASS ERBPPCOM ERBPPCON ERBRMFPP ERBR745 ERBR748 ERBSCAN ERBSMFI ERBSMF74 ERB3GCOC ERB3GCTC ERB3GDAC ERB3GISS ERB3GSMF ERB3GSMM ERB3GTER ERB3RCAD ERB3RCAS ERB3ROCA ERB3RTBR ERB3XEQS
| SA380667XX |
Fix information
Fixed component name
RMF
Fixed component ID
566527404
Applicable component levels
R7A0 PSY UA95094
UP18/02/02 P F802
R7B0 PSY UA95095
UP18/02/02 P F802
R790 PSY UA95096
UP18/02/02 P F802
Fix is available
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Document Information
Modified date:
01 March 2018