From mboxrd@z Thu Jan 1 00:00:00 1970 From: Edward Shishkin Subject: Re: Question about reiser performance - short system freezes Date: Thu, 24 Feb 2011 13:07:42 +0100 Message-ID: <4D664A0E.8020900@gmail.com> References: <4D65A3F7.22052.1288FE@jafojtik.seznam.cz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=QwM01eT9kfXYABKfvxfso/54twfuRZ7ibWODYajE3wo=; b=Hn+lwSiAoKNxTJ5L5IWlPAjZdnbRgGb52HNa9jptALThX7XXs0ra3s/uy1MBLJpmzB Sr+9ZvCJrPbSJXXkxplx4a7G/bN8PRPJ0I5wX3JIbOnumXmQuDEdnKLk6k+lDo66AVE8 oUKzJszfc/UOqzA6s0XEecporvEXf+WUsBzQk= In-Reply-To: <4D65A3F7.22052.1288FE@jafojtik.seznam.cz> Sender: reiserfs-devel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Jaroslav Fojtik Cc: Edward Shishkin , reiserfs-devel@vger.kernel.org On 02/24/2011 01:19 AM, Jaroslav Fojtik wrote: > Dear Edward Shishkin, > > May be that my comment might be userfull for your reiser development: > > I am facing following performance issue. The reiser works without data loss, > but system sometimes hangs for 15s, mouse cursor is frozen and after this > period it continues to work without any problem. It is strange, because I have 6 cores > and all of them seems to be locked and waiting for something. > > Hanging occurs during intensive file search like find, or first phase > of rsync. > > It seems to me that both reiser3 and reiser4 suffer by this issue. > I have found BKL inside reiser3, but reiser4 seems to be without BKL. > > It is also strange that OS resides on different partition that should not > be affected by reiser locking. > > May be that it could be problem large say 600GB HDD partition. But these partitins > are normal nowadays. > > Is there any idea how to overcome this issue? > Which kernel version? Edward.