8.82 K (Display CCKD internal trace)

8.82.1 Function

The K command displays the internal CCKD trace entries. Because the default value for the CCKD trace
entries is set to zero, the trace must first be enabled by setting a trace entry value. This can be done
either with the system parameter or the console command "CCKD TRACE=n", where n specifies the
number of available trace entries and can be in the range of 1 to 200000.

Please note that the K command can produce a lot of messages depending on the available trace entries.

8.82.2 Syntax

Descriptive

K

Diagram

Êʬ¬¬ K ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ÊÍ

8.82.3 Parameter

None.

8.82.4 Examples

Example 1:

Display the current CCKD trace entries.

HHC00013I Herc command: 'k'

HHC00399I CCKD file: internal cckd trace

HHC00398I 02:07:32.759838 0:0148> start i/o file[0] bufcur 2588 cache[207]

HHC00398I 02:07:32.759842 0:0148> end i/o bufcur 2588 cache[207] waiters 0

HHC00398I 02:07:32.759848 0:0148> start i/o file[0] bufcur 2588 cache[207]

HHC00398I 02:07:32.759852 0:0148> read trk 2589 (synchronous)

HHC00398I 02:07:32.759854 0:0148> 0 rdtrk 2589

HHC00398I 02:07:32.759857 0:0148> 0 rdtrk[208] 2589 syncio cache miss

HHC00398I 02:07:32.759868 0:0148> read trk 2589 (asynchronous)

HHC00398I 02:07:32.759872 0:0148> 0 rdtrk 2589

HHC00398I 02:07:32.759875 0:0148> 0 rdtrk[208] 2589 cache miss

HHC00398I 02:07:32.759888 0:0148> 0 rdtrk[208] 2589 buf 0000000007F67CD0 len 19456

HHC00398I 02:07:32.759892 0:0148> trk[2589] read_trkimg

HHC00398I 02:07:32.759894 0:0148> file[0] l2[10,29] trk[2589] read_l2ent 0x4d08

HHC00398I 02:07:32.759898 0:0148> file[0] read_l2 10 active 0 10 2

HHC00398I 02:07:32.759901 0:0148> file[0] l2[10,29] trk[2589] read_l2ent 0x14c1f2f 6290 6290

HHC00398I 02:07:32.759904 0:0148> file[0] fd[16] read, off 0x14c1f2f len 6290

HHC00398I 02:07:32.759918 0:0148> 0 rdtrk[208] 2589 complete buf 0000000007F67CD0:0100560009

HHC00398I 02:07:32.759922 0:0148> uncompress comp 1 len 6290 maxlen 19456 trk 2589

HHC00398I 02:07:32.760082 0:0148> uncompress zlib newlen 13065 rc 0

HHC00398I 02:07:32.760085 0:0148> validating trk 2589 len 13065 0000560009 0056000900000008

HHC00398I 02:07:32.760091 0:0148> read trk 2589 uncompressed len 13065

HHC00398I 02:07:32.760096 0:0148> end i/o bufcur 2589 cache[208] waiters 0

HHC00398I 02:07:32.760104 0:0148> start i/o file[0] bufcur 2589 cache[208]

HHC00398I 02:07:32.760112 0:0148> end i/o bufcur 2589 cache[208] waiters 0

HHC00398I 02:07:32.760118 0:0148> start i/o file[0] bufcur 2589 cache[208]

HHC00398I 02:07:32.760124 0:0148> end i/o bufcur 2589 cache[208] waiters 0

.

several lines not displayed

.

HHC00398I 02:07:32.760712 0:0148> end i/o bufcur 2589 cache[208] waiters 0

HHC00398I 02:07:32.760718 0:0148> start i/o file[0] bufcur 2589 cache[208]

HHC00398I 02:07:32.760722 0:0148> end i/o bufcur 2589 cache[208] waiters 0

HHC00398I 02:07:32.760728 0:0148> start i/o file[0] bufcur 2589 cache[208]

HHC00398I 02:07:32.760732 0:0148> read trk 2590 (synchronous)

HHC00398I 02:07:32.760734 0:0148> 0 rdtrk 2590

HHC00398I 02:07:32.760737 0:0148> 0 rdtrk[209] 2590 syncio cache miss

HHC00398I 02:07:32.760748 0:0148> read trk 2590 (asynchronous)

HHC00398I 02:07:32.760751 0:0148> 0 rdtrk 2590

HHC00398I 02:07:32.760754 0:0148> 0 rdtrk[209] 2590 cache miss

HHC00398I 02:07:32.760769 0:0148> 0 rdtrk[209] 2590 buf 0000000007F6C8E0 len 19456

HHC00398I 02:07:32.760773 0:0148> trk[2590] read_trkimg

HHC00398I 02:07:32.760775 0:0148> file[0] l2[10,30] trk[2590] read_l2ent 0x4d08

HHC00398I 02:07:32.760779 0:0148> file[0] read_l2 10 active 0 10 2

HHC00398I 02:07:32.760782 0:0148> file[0] l2[10,30] trk[2590] read_l2ent 0x14c37c1 4716 4716

HHC00398I 02:07:32.760785 0:0148> file[0] fd[16] read, off 0x14c37c1 len 4716

HHC00398I 02:07:32.760798 0:0148> 0 rdtrk[209] 2590 complete buf 0000000007F6C8E0:010056000a

HHC00398I 02:07:32.760803 0:0148> uncompress comp 1 len 4716 maxlen 19456 trk 2590

HHC00398I 02:07:32.760927 0:0148> uncompress zlib newlen 9813 rc 0

HHC00398I 02:07:32.760929 0:0148> validating trk 2590 len 9813 000056000a 0056000a00000008

HHC00398I 02:07:32.760935 0:0148> read trk 2590 uncompressed len 9813

HHC00398I 02:07:32.760940 0:0148> end i/o bufcur 2590 cache[209] waiters 0

HHC00398I 02:07:32.760947 0:0148> start i/o file[0] bufcur 2590 cache[209]

HHC00398I 02:07:32.760954 0:0148> end i/o bufcur 2590 cache[209] waiters 0

HHC00398I 02:07:32.760960 0:0148> start i/o file[0] bufcur 2590 cache[209]

HHC00398I 02:07:32.760966 0:0148> end i/o bufcur 2590 cache[209] waiters 0

.

.

.

Figure 164: K command

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