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bug#7489: [coreutils] over aggressive threads in sort
From: |
Paul Eggert |
Subject: |
bug#7489: [coreutils] over aggressive threads in sort |
Date: |
Thu, 02 Dec 2010 09:48:56 -0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.15) Gecko/20101027 Thunderbird/3.0.10 |
On 12/02/10 02:22, Chen Guo wrote:
> On Mon, Nov 29, 2010 at 11:16 AM, Paul Eggert <address@hidden> wrote:
>> (for i in $(seq 12); do read line; echo $i; sleep .1; done
>> cat > /dev/null) < fifo &
>> (ulimit -t 1; ./sort in > fifo \
>> || echo killed via $(env kill -l $(expr $? - 128)))
>
> I ran this 10 times or so on an i7 and couldn't trigger anything. Is
> seq 12 supposed to vary depending on the number of cores?
I imagine it does. It's timing-dependent; I can't always reproduce
it on my test host (Intel Xeon E5620 2.4 GHz).
I just now realized that the above doesn't say what "in" is; it's
the output of "seq 100000".
Also, it may help to use an explicit --parallel=2 or whatever.
What happens if you do the following with the latest git version
(savannah's back up, by the way)?
cd tests && make check TESTS=misc/sort-spinlock-abuse
This gets an XFAIL fairly reliably on my test host.
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/01
- bug#7489: [coreutils] over aggressive threads in sort, Paul Eggert, 2010/12/01
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/02
- bug#7489: [coreutils] over aggressive threads in sort,
Paul Eggert <=
- bug#7489: [coreutils] over aggressive threads in sort, Jim Meyering, 2010/12/02
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/03
- bug#7489: [coreutils] over aggressive threads in sort, Paul Eggert, 2010/12/03
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/06
- bug#7489: [coreutils] over aggressive threads in sort, Paul Eggert, 2010/12/06
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/06
- bug#7489: [coreutils] over aggressive threads in sort, Jim Meyering, 2010/12/07
- bug#7489: [coreutils] over aggressive threads in sort, Jim Meyering, 2010/12/07
- bug#7489: [coreutils] over aggressive threads in sort, Chen Guo, 2010/12/07
- bug#7597: multi-threaded sort can segfault (unrelated to the sort -u segfault), Jim Meyering, 2010/12/09