From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 24 Oct 2001 21:19:55 -0700 (PDT) From: Linus Torvalds Subject: Re: xmm2 - monitor Linux MM active/inactive lists graphically In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Zlatko Calusic Cc: Marcelo Tosatti , linux-mm@kvack.org, lkml List-ID: On 25 Oct 2001, Zlatko Calusic wrote: > > Sure. Output of 'vmstat 1' follows: > > 1 0 0 0 254552 5120 183476 0 0 12 24 178 438 2 37 60 > 0 1 0 0 137296 5232 297760 0 0 4 5284 195 440 3 43 54 > 1 0 0 0 126520 5244 308260 0 0 0 10588 215 230 0 3 96 > 0 2 0 0 117488 5252 317064 0 0 0 8796 176 139 1 3 96 > 0 2 0 0 107556 5264 326744 0 0 0 9704 174 78 0 3 97 This does not look like a VM issue at all - at this point you're already getting only 10MB/s, yet the VM isn't even involved (there's definitely no VM pressure here). > Notice how there's planty of RAM. I'm writing sequentially to a file > on the ext2 filesystem. The disk I'm writing on is a 7200rpm IDE, > capable of ~ 22 MB/s and I'm still getting only ~ 9 MB/s. Weird! Are you sure you haven't lost some DMA setting or something? Linus -- 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/