To be honest I am a bit confused. I think that the documentation in the first link is wrong. Shouldn't the **high watermark** initiate the purging and the **low watermark** stop the purging? With hmw=.9 and lmw=.7? Also in the second link maybe you can keep the order of the two watermarks also in the description i.e.: ```bash pfc.diskusage <lwm fraction> <hwm fraction>: low / high watermarks for disk cache purge operation (default 0.7 and 0.9) ``` --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/264#issuecomment-146263259 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1