common/buffering/tst.cputime.ksh

	tst.cputime.ksh revision 9512fe850e98fdd448c638ca63fdd92a8a510255
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident  "%Z%%M% %I% %E% SMI"

script()
{
    dtrace -s /dev/stdin -x bufpolicy=$1 $1 <<EOF

    #pragma D option quiet
    #pragma D option statusrate=1hz

    uint64_t total;
    int thresh;

    BEGIN
    {
        start = timestamp;
        thresh = 10;
    }

    sched:::on-cpu
    /pid == \$pid/
    {
        self->on = vtimestamp;
    }

    sched:::off-cpu
    /self->on/
    {
        total += vtimestamp - self->on;
    }

    tick-1sec
    /i++ == 10/
    {
        exit(0);
    }

    END
    /((total * 100) / (timestamp - start)) > thresh/
    {
        printf("'%s' buffering policy took %d%% of CPU; ",
            \$\$1, ((total * 100) / (timestamp - start)));
        printf("expected no more than %d%%!\n", thresh);
        exit(1);
    }
EOF
}

for policy in "fill ring switch"; do
    script $policy

    status=$?

    if [ "$status" -ne 0 ]; then
        exit $status
    fi
done

exit 0