From mboxrd@z Thu Jan 1 00:00:00 1970 Sender: Giu Message-ID: <3BDAB344.CE25D5D@denise.shiny.it> Date: Sat, 27 Oct 2001 15:14:44 +0200 From: Giuliano Pochini MIME-Version: 1.0 Subject: Re: xmm2 - monitor Linux MM active/inactive lists graphically References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-Path: To: zlatko.calusic@iskon.hr Cc: Linus Torvalds , Marcelo Tosatti , linux-mm@kvack.org, lkml List-ID: > block: 1024 slots per queue, batch=341 > > Wrote 600.00 MB in 71 seconds -> 8.39 MB/s (7.5 %CPU) > > Still very spiky, and during the write disk is uncapable of doing any > reads. IOW, no serious application can be started before writing has > finished. Shouldn't we favour reads over writes? Or is it just that > the elevator is not doing its job right, so reads suffer? > > procs memory swap io system cpu > r b w swpd free buff cache si so bi bo in cs us sy id > 0 1 1 0 3596 424 453416 0 0 0 40468 189 508 2 2 96 341*127K = ~40M. Batch is too high. It doesn't explain why reads get delayed so much, anyway. Bye. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/