[openssl-dev] 90-test_secmem.t hangs the machine for good

Mon May 15 17:15:15 UTC 2017

My disk is SSD, but computer load is pretty high. Which probably explains that recovery doesn't take place in 200-400 seconds...

On a semi-related note, I want able to locate mann.h file either.

Regards,
Uri

Sent from my iPhone

> On May 15, 2017, at 13:09, Short, Todd <tshort at akamai.com> wrote:
> 
> The time of the hang actually seems dependent on the number of applications running and your disk.
> 
> Since a large amount of memory becomes wired, there is very little available for programs and the OS to use (in some instances I have seen ~4MB non-wired memory). Things slow down due to swapping, etc. 
> 
> In my testing:
> 
> With almost no additional programs open, the hang-time is short, ~200 seconds.
> With a lot of programs open, the hang-time is increased, ~400 seconds; twice as long. And the number of swapins is 25x and the swapouts is ~34x the original test period.
> 
> This is on a machine with an SSD (late-2013 MBP)
> If you have a spinning HDD, the swapins and swapouts will be significantly more expensive in terms of performance/time.
> 
> If you quit all your programs, (other than Terminal), I suspect the hang may eventually recover; but if you have a hard disk that time might be quite long.
> 
> --
> -Todd Short
> // tshort at akamai.com
> // "One if by land, two if by sea, three if by the Internet."
> 
>> On May 15, 2017, at 11:51 AM, Blumenthal, Uri - 0553 - MITLL <uri at ll.mit.edu> wrote:
>> 
>> I’m tracking the current OpenSSL master only on El Capitan 10.11.6. I could try it on Sierra 10.12.4, if you really expect it to make a difference.
>>  
>> In my case the hang is not for a short time. It lasts for more than 10 minutes, so I’m forced to interfere. For how long did it hang for you?
>> — 
>> Regards,
>> Uri
>>  
>>  
>> On 5/15/17, 11:47 AM, "openssl-dev on behalf of Short, Todd via openssl-dev" <openssl-dev-bounces at openssl.org on behalf of openssl-dev at openssl.org> wrote:
>>  
>> We’ve been able to get some Macs (10.11.6, 8GB and 16GB) to hang for a short period of time with the unit-tests, but it eventually recovers. 
>>  
>> What MacOS version are you running? I can try 10.12 later today.
>> --
>> -Todd Short
>> // tshort at akamai.com
>> // "One if by land, two if by sea, three if by the Internet."
>>  
>>> On May 12, 2017, at 4:50 PM, Short, Todd via openssl-dev <openssl-dev at openssl.org> wrote:  
>>>  
>>> Uri: 
>>>  
>>> Look at https://github.com/openssl/openssl/pull/3455
>>>  
>>> I limited the test that hung your machine to Linux.
>>>  
>>> Rich: this removes the OpenSSL_assert() you see.
>>>  
>>> --
>>> -Todd Short
>>> // tshort at akamai.com
>>> // "One if by land, two if by sea, three if by the Internet."
>>>  
>>>> On May 12, 2017, at 4:46 PM, Short, Todd via openssl-dev <openssl-dev at openssl.org> wrote:
>>>>  
>>>> It’s trying to reserve 1<<34 bytes of memory… there goes your 16GB...
>>>> --
>>>> -Todd Short
>>>> // tshort at akamai.com
>>>> // "One if by land, two if by sea, three if by the Internet."
>>>>  
>>>>> On May 12, 2017, at 4:05 PM, Blumenthal, Uri - 0553 - MITLL <uri at ll.mit.edu> wrote:
>>>>>  
>>>>> Todd> Yes, it’s likely this is due to the amount of memory available in the machine. I tried to use reasonable values, but apparently not reasonable enough
>>>>>  
>>>>> Yep. In case it matters, my machine has 16GB of RAM (and runs a ton of stuff, besides these tests :).
>>>>> -- 
>>>>> openssl-dev mailing list
>>>>> To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
>>>> 
>>>>  
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>>>  
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>>  
> 
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