[Bug 1565978] Comment bridged from LTC Bugzilla

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------- Comment From brenohl at br.ibm.com 2016-04-27 09:13 EDT-------
> Well, the problem is fixed in the golang in Xenial, so I don't think
> that warning really belongs there?

Right. I added it before we had the fix, now that we have this one
fixed, I just removed that documentation. Thanks

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https://bugs.launchpad.net/bugs/1565978

Title:
  ISST-LTE:pVM: golang does not support huge amount (>256)  CPUs
  machines (as E870)

Status in golang-1.6 package in Ubuntu:
  Fix Released

Bug description:
  Docker and golang packages are not able to run on e870 machine due to
  a lot of CPU on these machines.

  The current machine has 400 CPUs and shows the following error:

  runtime stack:
  runtime.throw(0x654c60, 0x17)
          /usr/lib/go/src/runtime/panic.go:530 +0x8c
  runtime.procresize(0x190, 0x0)
          /usr/lib/go/src/runtime/proc.go:3158 +0xbd4
  runtime.schedinit()
          /usr/lib/go/src/runtime/proc.go:452 +0x140
  runtime.rt0_go(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x3fffd512de59, ...)
          /usr/lib/go/src/runtime/asm_ppc64x.s:72 +0xac
  /var/lib/dpkg/info/golang-go.postinst: line 18: 100 +  : syntax error: operand expected (error token is "+  ")
  dpkg: error processing package golang-go (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of golang-doc:
   golang-doc depends on golang-go; however:
    Package golang-go is not configured yet.

  dpkg: error processing package golang-doc (--configure):
   dependency problems - leaving unconfigured
  dpkg: dependency problems prevent configuration of golang:
   golang depends on golang-doc (>= 2:1.6-1ubuntu1); however:
    Package golang-doc is not configured yet.
   golang depends on golang-go (>= 2:1.6-1ubuntu1); however:
    Package golang-go is not configured yet.

  dpkg: error processing package golang (--configure):
   dependency problems - leaving unconfigured
  No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                            No apport report written because the error message indicates its a followup error from a previous failure.
                                                        Errors were encountered while processing:
   golang-go
   golang-doc
   golang
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  Looking at the code I see:

  _MaxGomaxprocs = 1 << 8

          if old < 0 || old > _MaxGomaxprocs || nprocs <= 0 || nprocs > _MaxGomaxprocs {
                  throw("procresize: invalid arg")
          }

  If I decrease the amount of CPU to < 256, I don't see a problem.

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