1 SHOW Displays information contained in various internal XFC data structures. 2 CONTEXT Displays the contents of one or more XFC context blocks (CTX). Format SHOW CONTEXT [address] [/BRIEF] [/FULL] [/STALLING] 3 Parameters address The address of a context block. If no address is specified, then all context blocks are displayed. 3 Qualifiers /BRIEF For each context block, displays a brief summary that includes such contents as the I/O type, the start virtual block number (VBN), and the I/O block count. /FULL Displays the complete contents of each selected context block. This is the default. /STALLING Shows only contexts that are in a stalled state (i.e., have a stall reason code other than estrNotStalling). 2 EXTENT Displays the contents of an extent control block (ECB). Format SHOW EXTENT address 3 Parameters address The address of the extent control block (ECB). 2 FILE Displays the contents of one or more cache file blocks (CFB). Format SHOW FILE [address] [/BRIEF] | [/EXTENTS] | [/FULL] | [/STATISTICS] [/CLOSED] [/CVB=] [/ID=] [/OPEN] [/DISPLAY_NAME] 3 Parameter address The address of the cache file block (CFB). If no address is specified, then all cache file blocks are displayed (subject to selection by the /CLOSED, /CVB, /ID, and /OPEN qualifiers) . 3 Qualifiers /BRIEF Displays summary information for each CFB: CFB address, CVB address, access count, active I/O count, and file specification or ID*. The /BRIEF qualifier is incompatible with each of the /EXTENTS, /FULL, and /STATISTICS qualifiers. *If the file specification is available, via LIB$FID_TO_NAME(), it is displayed; otherwise, the FID is displayed. Note that, because the volume is accessed through its logical name, if two volumes are mounted that have the same logical name (for example, one mounted /SYSTEM and one mounted privately, which results in the same logical name in two different access-mode logical name tables), the incorrect file specification might be displayed. /CLOSED Displays only CFBs whose access count is zero. /CVB /CVB=address Displays CFBs whose CVB address matches the specified one. /DISPLAY_NAME /DISPLAY_NAME (default) /NODISPLAY_NAME Controls whether the file specification is displayed. /EXTENTS /EXTENTS Displays the cache extents held in cache for any displayed files. This shows the primary and secondary cache extents along with their data state and VBNs. Also shows a summary of memory usage (pagelets used and pagelets valid) for any displayed files. The /EXTENTS qualifier is incompatible with the /BRIEF qualifier. /FULL Displays all fields for each Cache File Block except for those displayed by the /EXTENTS and the /STATISTICS qualifiers. This is the default. If the file specification is available, via LIB$FID_TO_NAME(), it is displayed; otherwise, the FID is displayed. Note that, because the volume is accessed through its logical name, if two volumes are mounted that have the same logical name (for example, one mounted /SYSTEM and one mounted privately, which results in the same logical name in two different access-mode logical name tables), the incorrect file specification might be displayed. /ID /ID=file-id Displays only information about files whose file ID match the one specified. The file id (FID) is the hex file number component in a [file number, sequence number, relative volume number]-format file ID. /OPEN Displays only CFBs whose access count is greater than zero. /STATISTICS /STATISTICS Displays more statistics about the specified file. The /STATISTICS qualifier is incompatible with the /BRIEF qualifier. 2 HISTORY Displays XFC activity in 20 minute intervals. 2 IRP Displays a subset of the contents of an I/O Request Packet that has relevance for XFC debugging. Format SHOW IRP address 3 Parameters address The address of the IRP structure whose relevant fields are to be decoded and displayed. 2 MEMORY Displays information about memory used by the cache. Format SHOW MEMORY [/BRIEF | /FULL] [/VERIFY] 3 Qualifiers /BRIEF Displays summary statistics on XFC memory usage. /FULL Displays full statistics on XFC memory usage. This is the default. /VERIFY Displays detailed page distribution of memory use. 2 SUMMARY Displays general information about the Extended File Cache. Format SHOW SUMMARY [/STATISTICS] 3 Qualifiers /STATISTICS Displays read and write activity by IO size. 2 TABLES Displays contents of both the extent hash table (EHT) and the file hash table (FHT) table. Format SHOW TABLES 3 Qualifiers /ALL Displays the contents of both the EHT and FHT. This is the default. /EXTENT Displays the contents of the EHT only. /FILE Displays the contents of the FHT only. 2 TRACE Displays all or selected portions of the XFC trace buffer starting with the most recent entry and moving backward in time. Format SHOW TRACE [/ALL] [/COUNT] [/CPU] [/LINENUMBER] [/LABEL] [/P1][/P2][/P3][/P4][/PX] [/MATCH] 3 Qualifiers /ALL Displays the entire trace buffer. /COUNT /COUNT=count Restricts the display to the first 'count' matching records. /CPU /CPU=cpu-num Display only records from threads executing on CPU cpu-num. /LABEL /LABEL=string Displays only records for which the label field contains string. /LINENUMBER /LINENUMBER=linenumber Displays only records from tracepoints at line linenumber in the relevant source files. /MATCH /MATCH[=[AND|OR]] (default /MATCH=OR) Alters the sense of the match condition when multiple filter qualifiers (/CPU, /LINENUMBER, /LABEL, /P1, /P2, /P3, /P4, or /PX) are specified. /P1 /P1=value Displays only records for which the traced parameter P1 is equal to value. /P2 /P2=value Displays only records for which the traced parameter P2 is equal to value. /P3 /P3=value Displays only records for which the traced parameter P3 is equal to value. /P4 /P4=value Displays only records for which the traced parameter P4 is equal to value. /PX /PX=value Displays only records where one or more of the traced parameters are equal to value. 2 VOLUME Displays cache information about cached volumes. Format SHOW VOLUME [address] [/FULL] [/BRIEF] [/STATISTICS] 3 Parameters address The address of a specific volume descriptor (CVB), otherwise all volumes are displayed. 3 Qualifiers /BRIEF Displays summary information for each volume: Volume label, CVB address, number of cached files. /FULL (Default) Displays a complete list of information about the volume(s). /NAME /NAME=DISK$volume_label Displays information for the volume with the specified name. /STATISTICS /STATISTICS Displays the read and write IO activity for this volume. Incompatible with /BRIEF.