Get the size in KB of Marshal.dump output

Question

I'm using Marshal.dump to serialize an array of objects, I need to get the size (in KB) of the returned value. Any ideas how to do that?

score 4 · Accepted Answer · answered Apr 05 '12 at 17:02

Since the output of Marshal.dump is a string, you can just ask for the length of that. The safest way to do this is to ask for bytesize:

dumped = Marshal.dump(array)
kb = dumped.bytesize / 1024

The bytesize method always returns the length of a string in bytes, whereas length returns the length of the string in characters. The two values can differ if you use a multi-byte encoding method like UTF-8.

score 0 · Answer 2 · answered Apr 05 '12 at 16:59

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What about kbytes = Marshal.dump(ary_of_objs).size / 1000.0?

answered Apr 05 '12 at 16:59

Guilherme Bernal

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score 0 · Answer 3 · answered Sep 07 '15 at 11:46

0

var = Base64.encode64(Marshal.dump(@result))
var.size

is life saver for me

answered Sep 07 '15 at 11:46

Ravindra

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I know nothing about RoR but this doesn't seem right. http://stackoverflow.com/questions/13378815/base64-length-calculation – spenibus Sep 07 '15 at 14:12

Get the size in KB of Marshal.dump output

3 Answers3