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

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#!/usr/sbin/dtrace -s

#pragma D option quiet
#pragma D option dynvarsize=16M

avl_find:return,
avl_nearest:return,
avl_walk:return
/callers["metaslab_block_picker"]/
{
	self->rs = (range_seg_t*)arg1;
	@calls[probefunc] = count();
}

metaslab_block_picker:entry
{
	self->entry_cursor = *args[1];
}

metaslab_block_picker:return
{
	if (arg1 == -1ULL) {
		@failed["FAILED", entry->args[2], 0] = count();
	} else {
		/*@arg[entry->args[0]->avl_compar, self->entry_cursor, entry->args[2], entry->args[3]] = count();*/
		@arg[entry->args[0]->avl_compar, entry->args[2], entry->args[3]] = count();
		/*@remainder[entry->args[2]] = lquantize(self->rs->rs_end - arg1 - entry->args[2], 0, 64*1024, 512);*/
		@remainder[entry->args[2]] = quantize(self->rs->rs_end - arg1 - entry->args[2]);
	}
	self->rs = NULL;
}

/*
metaslab_bf_alloc:return
{
	if (arg1 == -1ULL) {
		@failed["FAILED", entry->args[1], entry->args[2]] = count();
	} else {
		@params[entry->args[1], entry->args[2] / entry->args[1]] = count();
		@remainder[entry->args[1]] = quantize(self->rs->rs_end - arg1 - entry->args[1]);
	}
	self->rs = NULL;
}

metaslab_alloc_bf:entry
{
	self->tries++;
}

metaslab_group_alloc_bf:return
{
	@tries[entry->args[1]] = quantize(self->tries);
	self->tries = 0;
}
*/

END
{
	trunc(@remainder, 5);
	/*trunc(@params, 20); */
	trunc(@failed, 20);
	printa("%a, size=%u, align=%u count=%@u\n", @arg);
	printa(@failed);
	printa(@remainder);

	/*printa("allocation: %6u segment: %ux count: %@6u\n", @params);*/
}