[Dovecot] testing needed: log file concurrency

[Tan Shao Yi]

Hi Timo,

It prints the following:

>./concurrency
writing, page size = 8192

>./concurrency 1
reading, page size = 8192


This is a:

SunOS 5.10 Generic_118833-33 sun4u sparc SUNW,Sun-Fire-V240
>psrinfo -v
Status of virtual processor 0 as of: 06/20/2007 21:00:33
   on-line since 04/05/2007 16:11:51.
   The sparcv9 processor operates at 1503 MHz,
         and has a sparcv9 floating point processor.
Status of virtual processor 1 as of: 06/20/2007 21:00:33
   on-line since 04/05/2007 16:11:35.
   The sparcv9 processor operates at 1503 MHz,
         and has a sparcv9 floating point processor.

Hope this helps.

Cheers.

> On Wed, Jun 20, 2007 at 02:41:42AM +0300, Timo Sirainen wrote:
>> http://dovecot.org/tmp/concurrency.c
>>
>> I'd want to know what results this program gives with different systems.
>> Please test and reply (but don't bother if someone already replied with
>> the same OS+result). I expect it to print:
>>
>>  - SMP kernels: "page size cut" once in a while
>>  - UP (uniprocessor) kernels: Nothing
>>  - The most important thing is that it never prints "broken data"
>>
>> It might take a while for it to print anything. With my computer it
>> takes anything from a few seconds to a minute or so. See the file itself
>> for compiling/running instructions.