void capTotalSize(Date now) {
    long totalSize = 0;
    long totalRemoved = 0;
    for (int offset = 0; offset < maxHistory; offset++) {
        Date date = rc.getEndOfNextNthPeriod(now, -offset);
        File[] matchingFileArray = getFilesInPeriod(date);
        descendingSortByLastModified(matchingFileArray);
        for (File f : matchingFileArray) {
            long size = f.length();
            if (totalSize + size > totalSizeCap) {
                addInfo("Deleting [" + f + "]" + " of size " + new FileSize(size));
                totalRemoved += size;
                f.delete();
            }
            totalSize += size;
        }
    }
    addInfo("Removed  " + new FileSize(totalRemoved) + " of files");
}