From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: pre2 swap_out() changes References: Reply-To: zlatko@iskon.hr From: Zlatko Calusic Date: 12 Jan 2001 12:35:32 +0100 In-Reply-To: Linus Torvalds's message of "Thu, 11 Jan 2001 10:49:10 -0800 (PST)" Message-ID: <87itnlovej.fsf@atlas.iskon.hr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Marcelo Tosatti , linux-mm@kvack.org List-ID: Linus Torvalds writes: > On Thu, 11 Jan 2001, Marcelo Tosatti wrote: > > > > Since no process calls swap_out() directly, I dont see any sense on the > > comment above. > > Stage #2 is to allow them to call refill_inactive() in the low-memory case > (right now processes can only do "page_launder()" in alloc_pages(), and I > think that is wrong - it means that the only one scanning page tables etc > is kswapd) > Performance of 2.4.0-pre2 is terrible as it is now. There is a big performance drop from 2.4.0. Simple test (that is not excessively swapping, I remind) shows this: 2.2.17 -> make -j32 392.49s user 47.87s system 168% cpu 4:21.13 total 2.4.0 -> make -j32 389.59s user 31.29s system 182% cpu 3:50.24 total 2.4.0-pre2 -> make -j32 393.32s user 138.20s system 129% cpu 6:51.82 total -- Zlatko -- 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.eu.org/Linux-MM/