Memory usage with delay UDO – Csound Noobs

This is the basic circular delay example from the Csound 6 book.

form caption("Untitled") size(400, 300), guiMode("queue") pluginId("def1")
rslider bounds(296, 162, 100, 100), channel("gain"), range(0, 1, 0, 1, .01), text("Gain"), trackerColour("lime"), outlineColour(0, 0, 0, 50), textColour("black")




-n -d


; Initialize the global variables. 
ksmps = 32
nchnls = 2
0dbfs = 1


opcode Delay,a,ai
setksmps 1
asig, idel xin
	kpos init 0
	isize = idel > 1/sr ? round(idel*sr) : 1
	adelay[] init isize
	xout adelay[kpos]
	adelay[kpos] = asig
	kpos = kpos == isize-1 ? 0 : kpos + 1
endop


instr 1
kGain cabbageGetValue "gain"

a1 inch 1

a_delay_out Delay, a1, 60

outs (a1 + a_delay_out) * kGain, (a1 + a_delay_out) * kGain
endin



;causes Csound to run for about 7000 years...
f0 z
;starts instrument 1 and runs it for a week
i1 0 [60*60*24*7] 

I realize that I’ve set the delay to 60 seconds … but why the heck is Cabbage using 780 MB of RAM? I think this should be 8.23 MB of data (one minute of 24 bit, 48KHz audio). What am I missing?

Thank you!