dtrace/spacemap.xd at master · ahrens/dtrace · GitHub

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#!/usr/sbin/dtrace -s

#pragma D option quiet
#pragma D option aggsortpos=2
#pragma D option aggrate=10hz
#pragma D option switchrate=10hz
#pragma D option dynvarsize=10m

fbt::spa_sync:entry
/stringof(args[0]->spa_name) == $$1/
{
        self->yes = 1;
}

metaslab_condense:return,
space_map_*:return,
zio_dva_free:return
/self->yes/
{
        this->delta = timestamp - entry->timestamp;

        @c[probefunc] = sum(1);
        @t[probefunc] = sum(this->delta);
        @p[probefunc] = sum(this->delta);
}

space_map_write:entry
/self->yes/
{
	@c["nodes written"] = sum(args[1]->rt_root.avl_numnodes);
}

fbt::spa_sync:return
/self->yes/
{
        this->delta = timestamp - entry->timestamp;

        @c[probefunc] = sum(1);
        @t[probefunc] = sum(this->delta);
        @p[probefunc] = sum(this->delta);

        normalize(@t, 1000000);
        normalize(@p, this->delta / 100);

	printf("txg %u:\n", entry->args[1]);
        printa("%-30s  %@5d times  %@10dms (%@2d%%)\n", @c, @t, @p);
        printf("\n");
        clear(@c);
        clear(@t);
        clear(@p);
}