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    SubjectRe: Question about Reiser4
    Theodore Tso wrote:
    >> Now, to be fair, there are probably a number of cases where
    >> open/lseek/readv/close and open/lseek/writev/close would be worth doing
    >> as a single system call. The big problem as far as I can see involves
    >> EINTR handling; such a system call has serious restartability implications.
    > Sure, but Hans wants to change /etc/inetd.conf into /etc/inetd.conf.d,
    > where you have: /etc/inetd.conf.d/telnet/port,
    > /etc/inetd.conf.d/telnet/protocol, /etc/inetd.conf.d/telnet/wait,
    > /etc/inetd.conf.d/telnet/userid, /etc/inetd.conf.d/telnet/daemon,
    > etc. for each individual line in /etc/inetd.conf. (And where each
    > file might only contains 2-4 characters each: i.e., "23", "tcp",
    > "root", etc.)
    > So it's not enough just to collapse open/pread/close into a single
    > system call; in order to gain back the performance squandered by all
    > of these itsy-bitsy tiny little files. You want to collapse the
    > open/pread/close for many of these little files into a single system
    > call, hence Hans's insistence on sys_reiser4(); otherwise his scheme
    > doesn't work all that well at all.

    Heh. sys_read_tree() -- walk a directory tree and return it as a data
    structure in memory :)

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      Last update: 2007-04-24 02:37    [W:0.020 / U:8.540 seconds]
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