From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amir Goldstein Subject: Re: Slowness on ext4 master branch (Was: The new ext4 git tree re-org) Date: Mon, 16 May 2011 17:48:49 +0300 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-ext4@vger.kernel.org To: "Theodore Ts'o" Return-path: Received: from mail-ew0-f46.google.com ([209.85.215.46]:46772 "EHLO mail-ew0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756261Ab1EPOsu convert rfc822-to-8bit (ORCPT ); Mon, 16 May 2011 10:48:50 -0400 Received: by ewy4 with SMTP id 4so1267928ewy.19 for ; Mon, 16 May 2011 07:48:49 -0700 (PDT) In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: On Sat, May 14, 2011 at 9:49 PM, Amir Goldstein wr= ote: > On Wed, May 11, 2011 at 9:59 PM, Amir Goldstein = wrote: >> On Tue, May 10, 2011 at 4:56 PM, Theodore Ts'o wrote= : >>> >>> I've uploaded an updated dev branch to the ext4 tree. =A0Compared t= o the >>> previous version of dev branch, I've removed my modified version of >>> Allison's "NULL pointer when make_indexed_dir returns -ENOSPC" patc= h, >>> and I've added Amir's alloc_semp removal patches. =A0I'm still in t= he >>> process of reviewing those patches; I've included them to make it e= asier >>> for I and others to test them. >>> >> >> I have a general question regarding testing for next merge window. >> What kernel do you usually use when testing the dev branch? >> I started writing an xfstest to test online resize and filesystem >> filling in parallel, based on test 224 (Delayed allocation at ENOSPC= test). >> I started running test 224 on a kernel built from ext4/master >> and it seemed to run too slow. looking at the waiting tasks >> it looked like it could be related to I/O less throttling. >> Since ext4/master is based on 2.6.39-rc3, I figured maybe I am runni= ng >> a buggy kernel, so I merged 2.6.39-rc7 to ext4/master to build a new= kernel. >> >> Am I going in the right direction at all? >> I have a dedicated server for tests (X64_64 quad core), so it you wo= uld >> like me to run some xfstest runs with specific configuration, or cer= tain >> patches applied, please let me know. >> >> > > So now that I know I am not hearing voices, I guess test 224 is also = too new > to be tested by many people. > The good news is that test 224 runs smoothly on kernel 2.6.39-rc7. > on ext4 master branch is either hung or took too long time for me to = wait. > I will try to find the offending commit on Monday. I couldn't reproduce this. > > Amir. > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html