Is XCache caching?

Hello,
I have installed XCache(well, not me... the hosting support) and modified accordingly config.php and VBseo options to use it. But I don't see any difference in server load. I am sure it is installed (it is in phpinfo.php) but I don't know how can I be sure that vbulletin and vbseo are using it properly. My Vbulletin is 3.8.7, btw.
My server is

a hybrid-VPS with 3GB or ram and 120GB of storage space

Any hints?
Thank you

Hello,

There is an xcache webpage (login configured via php.ini) that will show you stats and cached items. Ask your host how to access this.

Ok. So I did, and it is caching.

What do you think about this configuration:

xcache.admin.enable_auth On On xcache.cacher On On xcache.coredump_directory no value no value xcache.count 8 8 xcache.gc_interval 0 0 xcache.mmap_path /dev/zero /dev/zero xcache.readonly_protection no value no value xcache.shm_scheme mmap mmap xcache.size 32M 32M xcache.slots 8K 8K xcache.stat Off Off xcache.test no value no value xcache.ttl 0 0 xcache.var_count 1 1 xcache.var_gc_interval 300 300 xcache.var_maxttl 0 0 xcache.var_size 32M 32M xcache.var_slots 8K 8K xcache.var_ttl 0 0 May I improve it in any way? Thank you.

That is not the webpage... thats the config values in php.ini. They should give you a link like yoursite.com/xcache.php for you to look at.

oh, yes, I have it now, they installed it already. This is my second step: to try to improve the configuration, if it is possible.