dylibprof

NAME

SYNOPSIS

DESCRIPTION

To use dylibprof(1), /usr/etc/profileServer must be running. Currently /usr/etc/profileServer must be executed from a console login as root due to bootstrap port issues. So first start /usr/etc/profileServer and leave it running in the back ground:

        # /usr/etc/profileServer >& /dev/console &

/usr/etc/profileServer starts up with shared pc sampling disabled. It should not be left running with shared pc sampling enabled if no sampling is being done as every launch of a program that uses the dynamic linker is effected. This is true even to a small extent if there no libraries being sampled.

USING /etc/bootstrap.conf IS CURRENTLY BROKEN. If you need to profile from boot up for all processes then the following line can be added to /etc/bootstrap.conf:

        server "/usr/etc/profileServer /lib/libsys_s.A.dylib" services NSProfileServer;

Before any dynamic shared library can be sampled sampling must be enabled as
follows:
        % dylibprof -e

It can then later be disabled when no more sampling is to be done with:

        % dylibprof -d

EXAMPLE

        % dylibprof -c /lib/libsys_s.A.dylib

Then begin the sampling:

        % dylibprof -b /lib/libsys_s.A.dylib

Then to halt the sampling:

        % dylibprof -h /lib/libsys_s.A.dylib

The profiling output file (a gmon.out file) can be created with:

        % dylibprof -p -o /tmp/gmon.out /lib/libsys_s.A.dylib

Using the profiling output file and the library a profile listing and a time based order file (time.order) can be created with: gprof(1):

        % gprof -S /lib/libsys_s.A.dylib gmon.out

When no more sampling for this library is to be done the sample buffer can be
removed with:
        % dylibprof -r /lib/libsys_s.A.dylib

The options are:

-e

Enable shared program counter sampling for dynamic libraries.

-d

Disable shared program counter sampling for dynamic libraries.

-c

Create a pc sample buffer for the library.

-b

Begin sampling for programs subsequently launched using the library.

-h

Halt sampling for programs subsequently launched using the library.

-p

Produce a profiling output file (a gmon.out file) for the library.

-r

Remove the pc sample buffer for the library.

-o name

Use the file name instead of gmon.out when producing the profiling output file with the -p above.

FILES

SEE ALSO

Index

NAME

SYNOPSIS

DESCRIPTION

EXAMPLE

FILES

SEE ALSO