FFSB file read/write pattern

Mahsa M
2008-02-23
2013-05-22
  • Mahsa  M
    Mahsa M
    2008-02-23

    Hi,

    I have a question about how FFSB performs the read and write?
    Do all the threads issue read/write requests simultanously?
    When a thread starts to read from / write to a file, does it continue with the same file until it is finished? or is it possible that that thread starts with another file before the curently open file is read completely?

    Your help will be appreciated.

    Thanks,
    Mahsa

     
    • Jose Santos
      Jose Santos
      2008-08-28

      Sorry for the VERY long delay.

      An ffsb thread will handle a single operation at a time.  It does not read the entire file though, it reads as much as you tell it to in the "read_size" option.  If you wish to read the hole file you have to options:

      1. max_filesize = min_filesize = (read/write)_size
          OR
      2. use the readall_weight option

      Hope you are still interested.