HI Kuli
The free -m command gives me
total used free shared buffers
cached
Mem: 9991 9934 57 0 75 5759
-/+ buffers/cache: 4099 5892
Swap: 8189 3395 4793
You can see that has only 57m free and 5GB cached.
In top command, the glassfish process used 79,7% of memory:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
4336 root 21 0 29.7g 7.8g 4.0g S 0.3 79.7 5349:14
java
If i increase the memory of server for more 2GB, the SO will be use this
additional 2GB in cache? I need to increse the memory size?
Thanks
2012/5/11 Michael Kuhlmann <k...@solarier.de>
> Am 11.05.2012 15:48, schrieb Anderson vasconcelos:
>
> Hi
>>
>> Analysing the solr server in glassfish with Jconsole, the Heap Memory
>> Usage
>> don't use more than 4 GB. But, when was executed the TOP comand, the free
>> memory in Operating system is only 200 MB. The physical memory is only
>> 10GB.
>>
>> Why machine used so much memory? The cache fields are included in Heap
>> Memory usage? The other 5,8 GB is the caching of Operating System for
>> recent open files? Exists some way to tunning this?
>>
>> Thanks
>>
>> If the OS is Linux or some other Unix variant, it keeps as much disk
> content in memory as possible. Whenever new memory is needed, it
> automatically gets freed. That won't need time, and there's no need to tune
> anything.
>
> Don't look at the free memory in top command, it's nearly useless. Have a
> look at how much memory your Glassfish process is consuming, and use the
> 'free' command (maybe together with the -m parameter for human readability)
> to find out more about your free memory. The "
> -/+ buffers/cache" line is relevant.
>
> Greetings,
> Kuli
>
