Hi Luca,

I'm sorry, that was an error on my part: I changed that after the crash, before 
the crash it was on a very low setting, around 400. I'll change it back anyway!


Erik

> On 08 Apr 2016, at 20:10, Luca Garulli <l.garu...@orientdb.com> wrote:
> 
> Hi Erik,
> Do you have 2GB of RAM on that server? if this is the case, you cannot have 
> 8GB of RAM for the Diskcache:
> 
> -Dstorage.diskCache.bufferSize=8192
> 
> So this must be the reason. This is the formula:
> 
> diskcache + heap < available ram
> 
> So with 1,5GB of free RAM, try these settings:
> 
> MAXHEAP=-Xmx700m and -Dstorage.diskCache.bufferSize=512
> 
> Best Regards,
> 
> Luca Garulli
> 
> Founder & CEO
> OrientDB
> 
> 
> 
>> On 8 April 2016 at 10:14, Erik Pragt <erik.pr...@gmail.com> wrote:
>> Hi Luca,
>> 
>> Thanks for your response.
>> 
>> - I'm running on Digital Ocean, 2 core 2 gig version. 
>> - Around 1500 mb.
>> - What kind of swap do you mean? On an OS level?
>> 
>> Thanks for the help!
>> Erik
>> 
>>> On Friday, April 8, 2016 at 5:39:06 PM UTC+10, l.garulli wrote:
>>> Hi Erik,
>>> 
>>> If OrientDB dies with no log, it means the OS killed it. The most common 
>>> reason is the out of memory.
>>> 
>>> Look at: 
>>> http://stackoverflow.com/questions/726690/who-killed-my-process-and-why
>>> 
>>> A few questions for you:
>>> How much physical RAM do you have on that server and
>>> How much is available before you start OrientDB server?
>>> Did you configure any swap for your server?
>>> 
>>> Best Regards,
>>> 
>>> Luca Garulli
>>> Founder & CEO
>>> OrientDB
>>> 
>>> 
>>>> On 8 April 2016 at 09:34, Luigi Dell'Aquila <luigi.de...@gmail.com> wrote:
>>>> Hi Erik,
>>>> 
>>>> It's hard to give you an answer here, this is the first report we have 
>>>> from a system that crashes without emitting any logs at all.
>>>> In other cases, when we had an unexpected crash with few information, it 
>>>> was because of some OS related procedures (eg. process kill under heavy 
>>>> load), but also in that case we had a log stating that the server was 
>>>> killed.
>>>> 
>>>> Could you please share your logs? Maybe we will find some hints in the 
>>>> history
>>>> 
>>>> Thanks
>>>> 
>>>> Luigi
>>>> 
>>>> 
>>>> 2016-04-08 2:18 GMT+02:00 Erik Pragt <erik....@gmail.com>:
>>>>> Btw, running OrientDB 2.1.9.
>>>>> 
>>>>> 
>>>>>> On Friday, April 8, 2016 at 10:05:33 AM UTC+10, Erik Pragt wrote:
>>>>>> Hi all,
>>>>>> 
>>>>>> As the question title suggests, our OrientDB database crashed today. We 
>>>>>> got notified by our monitoring server that our sites aren't accepting 
>>>>>> any requests anymore, which was quickly traced to OrientDB being 
>>>>>> unavailable, i.e., not running anymore.
>>>>>> 
>>>>>> However, when checking the logs (orientdb.err/orientdb.log), there was 
>>>>>> no indication at all of any crash. What can I do to investigate this 
>>>>>> issue, and, even better, prevent OrientDB from crashing again? This 
>>>>>> isn't the first time OrientDB crashes, but usually it's with an 
>>>>>> OutOfMemory exception, which we fixed(?) by giving it more memory. 
>>>>>> Currently, the DB hardly does anything (1 request per 10 seconds?), and 
>>>>>> we're a bit worried that once we do get some requests, that OrientDB 
>>>>>> might crash more often.
>>>>>> 
>>>>>> Our current settings to run OrientDB look like this:
>>>>>> 
>>>>>> ORIENTDB_SETTINGS="-Dprofiler.enabled=true"
>>>>>> JAVA_OPTS_SCRIPT="-Djna.nosys=true -XX:+HeapDumpOnOutOfMemoryError 
>>>>>> -Djava.awt.headless=true -Dfile.encoding=UTF8 -Drhino.opt.level=9"
>>>>>> 
>>>>>> # ORIENTDB MAXIMUM HEAP. USE SYNTAX -Xmx<memory>, WHERE <memory> HAS THE 
>>>>>> TOTAL MEMORY AND SIZE UNIT. EXAMPLE: -Xmx512m
>>>>>> MAXHEAP=-Xmx1024m
>>>>>> # ORIENTDB MAXIMUM DISKCACHE IN MB, EXAMPLE, ENTER 
>>>>>> -Dstorage.diskCache.bufferSize=8192 FOR 8GB
>>>>>> #MAXDISKCACHE=""
>>>>>> MAXDISKCACHE="-Dstorage.diskCache.bufferSize=8192"
>>>>>> 
>>>>>> If we need to provide some more information, please let me know.
>>>>>> 
>>>>>> Kind regards,
>>>>>> 
>>>>>> Erik Pragt
>>>>> 
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