From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erich Focht Date: Thu, 11 Jul 2002 09:25:26 +0000 Subject: [Linux-ia64] Re: O(1) scheduler "complex" macros Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Ingo, the last fix survived one night of testing with included udelay(100), so I would consider it stable. Thanks again! The performance with the new "complex" macros is as expected worse than with the simple ones, we see 10% in some cases, which is hurting a lot. Would you please consider moving the location of the switch_lock from the end of the task_struct to the hot area near the scheduler related variables? The effect may vary depending on the cache line size but having it behind *array or sleep_timestamp would probably save us a cache miss here. Regards, Erich