runtime: out of memory while executing make.bash

[alevchuk]

Master (go1.11) build process is using more memory than go1.10.3

I was able to build go1.10.3 (June 6) on ARMv6 with 433 MB of RAM (Raspbery Pi Zero W)
Yet, with the latest checkout of 48c7973 (July 10) the build crashes with

# com/compile/internal/ssa
fatal error: runtime: out of memory

The regression was introduces somewhere in the range from June 6 to July 10.

What version of Go are you using (go version)?

48c7973 - bad version
go1.10.3 - good version

i was able to re-pro reliably 2 times on each version

Does this issue reproduce with the latest release?

go1.10.3 is the latest release

What operating system and processor architecture are you using (go env)?

arm

What did you do?

Did building with ./make.bash

What did you expect to see?

build complete

What did you see instead?

see error in screenshot

Build successful on go1.10.3 (June 6)

Build runs out of memory on 48c7973 (July 10)

[agnivade]

A git bisect would be extremely helpful.

[ysmolski]

On the side note, it would be cool to have builders automatically report and store with currently absent benchmarking data the memory it took to build the go.

[eliasnaur]

The Go 1.10.3 release might be from June 6, but it doesn't contain all the changes from Go 1.11. So the window of changes is the entire Go 1.11 development window, except for a few backports.

[eliasnaur]

Perhaps #26186 is relevant.

[randall77]

@alevchuk : could you try patching in https://go-review.googlesource.com/c/go/+/125516 and running again? My bet is that it won't help but it's worth trying.

[agnivade]

Hi @alevchuk, could you try @randall77's suggestion and see if that helps ?

[benshi001]

My raspberry pi 2 has a USB disk as a SWAP, which can avoid this issue.

             total       used       free     shared    buffers     cached
Mem:        945516      83428     862088       6324      10744      37424
-/+ buffers/cache:      35260     910256
Swap:      7919080          0    7919080

[gopherbot]

Timed out in state WaitingForInfo. Closing.

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