metaslab_alloc.xd

#!/usr/sbin/dtrace -s

#pragma D option quiet
#pragma D option aggsortkey
#pragma D option dynvarsize=1m

metaslab_block_alloc:entry
/args[0]->ms_group->mg_class->mc_spa->spa_name == $$1/
{
	@alloc_per_ms[args[0]->ms_group->mg_vd->vdev_id, args[0]->ms_id] = count();
	@weight[args[0]->ms_group->mg_vd->vdev_id, args[0]->ms_id] = max(args[0]->ms_weight);
	@size = llquantize(args[1], 8, 0, 10, 8);
}

metaslab_block_alloc:return
/entry->args[0]->ms_group->mg_class->mc_spa->spa_name == $$1/
{
	if (arg1 == -1) {
		@failed[entry->args[0]->ms_group->mg_vd->vdev_id,
		    entry->args[0]->ms_id, entry->args[1]] = count();
	}
}

metaslab_group_alloc:return
/entry->args[0]->mg_class->mc_spa->spa_name == $$1/
{
	if (arg1 == -1) {
		@failed_group[entry->args[0]->mg_vd->vdev_id, entry->args[2]] = count();
	} else {
		@bytes_per_group[entry->args[0]->mg_vd->vdev_id] = sum(entry->args[2]);
	}
}

metaslab_block_alloc:entry
/args[0]->ms_group->mg_class->mc_spa->spa_name == $$1 && args[0]->ms_group->mg_vd->vdev_path/
{
	@alloc_per_ms_named[stringof(args[0]->ms_group->mg_vd->vdev_path), args[0]->ms_id] = count();
}

zio_write_gang_block:entry
/args[0]->io_spa->spa_name == $$1/
{
	@gangs = count();
}

spa_sync:return
/entry->args[0]->spa_name == $$1/
{
	printf("\ntxg %u took %ums to sync\n",
	    entry->args[1], entry->elapsed_ms);
	printa(@alloc_per_ms_named);
	trunc(@alloc_per_ms_named);
	printa("vdev=%2u metaslab=%3u allocations=%5@u weight=0x%@x\n",
	    @alloc_per_ms, @weight);
	trunc(@alloc_per_ms);
	trunc(@weight);
	printa("vdev=%2u metaslab=%3u size=%u failed=%@u\n",
	    @failed);
	trunc(@failed);
	printa("vdev=%2u size=%u failed=%@u\n",
	    @failed_group);
	trunc(@failed_group);
	printa("gang allocations: %@u\n",
	    @gangs);
	trunc(@gangs);
	normalize(@bytes_per_group, 1024*1024);
	printa("vdev=%2u allocd=%@uMB\n",
	    @bytes_per_group);
	trunc(@bytes_per_group);
	printf("allocation sizes in bytes:");
	printa(@size);
	trunc(@size);
}