# Lagless FUP

Jeff Dubrule (igor@linguist.dartmouth.edu)
Thu, 27 Feb 1997 01:38:51 PST

- Messages sorted by:[ date ][ thread ][ subject ][ author ]

    I noticed that one of the chief annoyances with FUP is the lag that occurs
    when FUP reads in a large file.  To solve this on SchoolNet MOO, we've
    added a couple of verbs:

    :fileread_suspended works by reading the file in a few lines at a time and
    suspending in-between

    :filewrite_suspended writes the first line of the file normally, then calls
    fileappend for the rest of the file, appending a few lines each time

    Because not every character that the MOO uses is a valid character for a
    filename, two verbs, :trans_to and :trans_from translate a MOO string into
    a valid unix filename by adding '^' before each bad character.

    The only laggy operation now is filelist(), as our file system is organised
    mirroring the inheritance hierarchy is.  For most objects, this isn't a
    problem as they have very few children, but $trash has 6670 children, each
    of which has one file, so the directory must be there.  Right now, the MOO
    is lagged for about 5 minutes whenever any stupid wizard types '$ls
    /12/63', which is a real problem.  If anyone has a solution to this, it
    would be appreciated.

    -manta