The following tests are with HHVM and NFS:

Before:

```
vagrant@mediawiki-vagrant:~$ nfsstat -ncl
nfs v4 client        total:   696869 
------------- ------------- --------
nfs v4 client         read:     3114 
nfs v4 client        write:   156537 
nfs v4 client       commit:     6120 
nfs v4 client         open:   129880 
nfs v4 client    open_conf:       37 
nfs v4 client        close:   129397 
nfs v4 client      setattr:      129 
nfs v4 client       fsinfo:        4 
nfs v4 client        renew:      478 
nfs v4 client    setclntid:        4 
nfs v4 client      confirm:        2 
nfs v4 client         lock:        1 
nfs v4 client        locku:        1 
nfs v4 client       access:    59190 
nfs v4 client      getattr:   194778 
nfs v4 client       lookup:    11294 
nfs v4 client  lookup_root:        4 
nfs v4 client       remove:       35 
nfs v4 client       rename:        6 
nfs v4 client       create:        1 
nfs v4 client     pathconf:        3 
nfs v4 client       statfs:        2 
nfs v4 client      readdir:      213 
nfs v4 client  server_caps:        7 
nfs v4 client  delegreturn:     5629 
nfs v4 client  rel_lkowner:        1 
nfs v4 client      secinfo:        2 
```

Request (made from outside, generated from using Firefox's Copy as cURL):

time curl 'http://127.0.0.1:8080/w/load.php?debug=false&lang=en&modules=startup&only=scripts&skin=vector&*' -H 'Host: 127.0.0.1:8080' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.5.0' -H 'Accept: */*' -H 'Accept-Language: en-us,en;q=0.9,eng-us;q=0.8,eng;q=0.7,en-gb;q=0.6,en-au;q=0.4,en-ca;q=0.3,en-us.utf-8;q=0.2,en-local;q=0.1' -H 'Accept-Encoding: gzip, deflate' -H 'DNT: 1' -H 'Referer: http://127.0.0.1:8080/wiki/Main_Page' -H 'Cookie: wikiUserName=Admin; mediaWiki.user.bucket%3Amoodbar%403-trigger=3%3Aediting; ext.moodBar%403-tooltip=1; wikiEditor-3-booklet-colors-page=colors; wikiEditor-3-booklet-emoticons-page=emoticons; wikiUserID=1; stopMobileRedirect=true; wikiEditor-0-toolbar-section=advanced; wikiEditor-0-booklet-characters-page=latin; mediaWiki.user.sessionId=cc8787424e30789f; wiki_session=svsh89804l89ns69fpgrv7rbf7' -H 'Connection: keep-alive' -H 'If-Modified-Since: Wed, 11 Mar 2015 00:11:04 GMT'

(output omitted)

    0.01s user 0.00s system 0% cpu 1:10.11 total

After:

```
vagrant@mediawiki-vagrant:~$ nfsstat -ncl
nfs v4 client        total:   706258 
------------- ------------- --------
nfs v4 client         read:     3114 
nfs v4 client        write:   159015 
nfs v4 client       commit:     6290 
nfs v4 client         open:   131533 
nfs v4 client    open_conf:       38 
nfs v4 client        close:   131019 
nfs v4 client      setattr:      129 
nfs v4 client       fsinfo:        4 
nfs v4 client        renew:      482 
nfs v4 client    setclntid:        4 
nfs v4 client      confirm:        2 
nfs v4 client         lock:        1 
nfs v4 client        locku:        1 
nfs v4 client       access:    59751 
nfs v4 client      getattr:   197448 
nfs v4 client       lookup:    11464 
nfs v4 client  lookup_root:        4 
nfs v4 client       remove:       35 
nfs v4 client       rename:        6 
nfs v4 client       create:        1 
nfs v4 client     pathconf:        3 
nfs v4 client       statfs:        2 
nfs v4 client      readdir:      213 
nfs v4 client  server_caps:        7 
nfs v4 client  delegreturn:     5689 
nfs v4 client  rel_lkowner:        1 
nfs v4 client      secinfo:        2 
```