On Aug 26 17:35, Chris H wrote:
On Wed, 26 Aug 2015 18:38:46 +0100 Matt Smith <f...@xtaz.co.uk> wrote
On Aug 26 12:27, Matt Smith wrote:
>On Aug 26 13:10, Slawa Olhovchenkov wrote:
>>>>Hardware error or memory exhausted
>>>
>>>It does appear to be something along those lines. It's not memory
>>>exhaustion as it has around 2GB free at the point it fails. However I've
>>>deleted /usr/obj and started the buildworld again and it failed in a
>>>different place with the same error. I'm trying it again without -j4 to
>>>see what happens. But isn't looking too good. :(
>>
>>Look like hardware error.
>>RAM/CPU/MB
>
>Interestingly it *always* manages to succesfully compile clang etc and
>it has no issues compiling things from ports. It fails compiling
>something from lib like openssl or kerberos. Doesn't buildworld build
>a bootstrap version of clang and then use that version to compile the
>rest of it? I might try downgrading my sources back to the version
>that I last succesfully compiled just to prove it one way or the other
>to myself.
>
So, been doing some testing. It looks like a -j4 problem with the latest
sources. If I buildworld with -j1 then it compiles with no issues at
all. If I compile r286908 with -j4 then it compiles with no issues at
all. If I try and compile r287155 with -j4 then I get the bus errors. So
I'm not convinced at all that it's hardware related at the moment.
Not saying it is. But it still could be a region of CPU cache that
never got exercised, or in the right (same) manner.
Maybe use a CPU/RAM test program, just to be sure?
--Chris
Could be something wrong with it for sure. However I installed the
world/kernel that I had succesfully compiled with the -j1, then I
repeatedly tried more buildworlds with -j4 again. Can't get it to go
wrong at all now. It has 4 cores which is why I'm using j4 by the way.
I've run buildworld since with -j4 three different times, every one has
worked. So either there is a hardware issue which for some reason I'm no
longer hitting, or there may have been something weird with having
r286908 installed whilst trying to compile r287155 with j4. I really
have no idea at this point.
It's working now though, so I think I'll just see what happens over the
next couple of months when I try further buildworlds. If it ever happens
again then I'll do further tests, or just buy new hardware!
Thanks for all your advice though guys.
--
Matt
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