On Thu, 7 Nov 2002 23:17:06 -0800 (PST), John Joe <[EMAIL PROTECTED]> wrote:
>sorry this is not Debian question, but could you >kindly explain "heavy lock contention", and especially >the "heavy" in it? > >The standard piped streams, while safe and reliable, >leave much to be desired in terms of their >performance. Several factors contribute to this >performance problem: > >Array-based operations simply call through to an >inefficient byte-by-byte copy operation. This >operation is itself synchronized, resulting in >extremely heavy lock contention. "Lock contention" basically means one process ends up waiting for another to free some resource; "heavy" means (in this instance) this happens for each individual byte transferred, so things get really slow. Pigeon -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
