projects / apple / system_cmds.git / blame
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|---|---|---|
| 530d02b6 A |
1 | .\" Copyright (c) 2018, Apple Inc. All rights reserved. |
| 2 | .\" | |
| 3 | .Dd February 21, 2018 | |
| 4 | .Dt ZLOG 1 | |
| 5 | .Os "Mac OS X" | |
| 6 | .Sh NAME | |
| 7 | .Nm zlog | |
| 8 | .Nd show allocation backtraces for kernel zones | |
| 9 | .Sh SYNOPSIS | |
| 10 | .Nm | |
| 11 | .Op Fl t | |
| 12 | .Op Fl z Ar name Op Fl n Ar num | Fl l | |
| 13 | .Op Fl h | |
| 14 | .Sh DESCRIPTION | |
| 15 | .Nm | |
| 16 | displays allocation (and free, if used in corruption tracking mode with | |
| 17 | the boot-arg "-zc") backtraces for zones that have zone logging enabled. | |
| 18 | Zone logging can be turned on by using the boot-arg "zlog<N>=<name>", | |
| 19 | where 'N' can range from 1 to 10, and 'name' is the name of the zone to | |
| 20 | be tracked. | |
| 21 | .Pp | |
| 22 | .Nm | |
| 23 | interprets the following options: | |
| 24 | .Pp | |
| 25 | .Bl -tag -width "disable -" | |
| 26 | .\" -t | |
| 27 | .It Fl t | |
| 28 | (Default) list all the zones that have logging enabled | |
| 29 | .\" -z | |
| 30 | .It Fl z Ar name | |
| 31 | show all allocation backtraces for zone | |
| 32 | .Ar name | |
| 33 | .\" -n | |
| 34 | .It Fl n Ar num | |
| 35 | Can be used in combination with the | |
| 36 | .Fl z | |
| 37 | option to show the top | |
| 38 | .Ar num | |
| 39 | backtraces with the most active references in the zone | |
| 40 | .Ar name | |
| 41 | .\" -l | |
| 42 | .It Fl l | |
| 43 | Can be used in combination with the | |
| 44 | .Fl z | |
| 45 | option to show the backtrace most likely contributing to a leak in the zone | |
| 46 | .Ar name | |
| 47 | (prints the backtrace with the most active references) | |
| 48 | .\" -h | |
| 49 | .It Fl h | |
| 50 | show the help text | |
| 51 | .El | |
| 52 | .Sh DIAGNOSTICS | |
| 53 | .Ex -std | |
| 54 | .Sh SEE ALSO | |
| 55 | .Xr zprint 1 , | |
| 56 | .Xr ioclasscount 1 |