to find out what files have been created recently we can exploit the fact that carbon-cache logs whenever it creates a new file. reqstats is there but seems a minority:

```
root@tungsten:/var/log/upstart# zgrep  -F 'creating ' /var/log/upstart/carbon_cache-*.gz | cut -d' ' -f8 | sort | grep -i reqstats
/var/lib/carbon/whisper/reqstats/2_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/5yojb4_en_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/Mai_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/Mai_wikipedia_org/tp50.wsp
/var/lib/carbon/whisper/reqstats/Mai_wikipedia_org/tp99.wsp
/var/lib/carbon/whisper/reqstats/action_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/bn_m__wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/crsio_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/crsio_org/tp50.wsp
/var/lib/carbon/whisper/reqstats/crsio_org/tp99.wsp
/var/lib/carbon/whisper/reqstats/during_World_War_IIwikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/edits/2013_wikipedia_org/tp99.wsp
/var/lib/carbon/whisper/reqstats/edits/EN_wikipedia_org/edit.wsp
/var/lib/carbon/whisper/reqstats/edits/action_wikipedia_org/edit.wsp
/var/lib/carbon/whisper/reqstats/edits/fa_m_wikivoyage_org/submits.wsp
/var/lib/carbon/whisper/reqstats/edits/mai_wikipedia_org/edit.wsp
/var/lib/carbon/whisper/reqstats/edits/title_wikipedia_org/tp99.wsp
/var/lib/carbon/whisper/reqstats/el_wikiipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/en_wikiquosity_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/hi__wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/mai_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/norb_rulez_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/pap_m_wikibooks_org/tp50.wsp
/var/lib/carbon/whisper/reqstats/philipminhparish_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/sfair_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/wpDestFile_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_NL_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_echolalie_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_ietf_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_ja_wikiipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_sugarlabs_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_urbansim_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_veteranosracingferrol_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/www_wikimania_org/tp50.wsp
/var/lib/carbon/whisper/reqstats/www_wikimania_org/tp99.wsp
/var/lib/carbon/whisper/reqstats/www_za_wikiversity_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/zh_wikipedia_orgzh_wikipedia_org/pageviews.wsp
/var/lib/carbon/whisper/reqstats/zhqvcrgkqodjbfyeuxdqaiqzx_org/pageviews.wsp
root@tungsten:/var/log/upstart# 
```