From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from conssluserg-04.nifty.com (conssluserg-04.nifty.com [210.131.2.83]) by sourceware.org (Postfix) with ESMTPS id 9FA883858D3C for ; Thu, 16 Sep 2021 09:09:20 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 9FA883858D3C Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=nifty.ne.jp Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=nifty.ne.jp Received: from Express5800-S70 (z221123.dynamic.ppp.asahi-net.or.jp [110.4.221.123]) (authenticated) by conssluserg-04.nifty.com with ESMTP id 18G9928X008893 for ; Thu, 16 Sep 2021 18:09:03 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-04.nifty.com 18G9928X008893 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp; s=dec2015msa; t=1631783343; bh=sOvl+naf/rldkHP6VryQPW1/eH/us64RbBzyP4Pijso=; h=Date:From:To:Subject:In-Reply-To:References:From; b=sfgKkC1LeoKRVs66IStDHNXmEYiYckUjDWmZ86MTLzKRz9eXLfnOChxPwGhdfoB5j 4y7DaNVSxbBM+gdE6NtJGdJ+mJca6kDTdJBBhncXwaT7fmASyEBA1rPueDqvhkPYIO cg04Ebud5SAO5sjGsKYqbBmcDJXdFgv+HhMegjCm/4O0YhlX5qKRBi54AHvtc4Ql+j Ld4up7H9inU6TR9jtFAK6sFwdhJpAvt8tSNhYqkO5Snz50xDjdzV5NgHiuqaj2HKHl MGkBm44FMRFeSd20JVcdJ/fydHN4Mj1y9HNh06AoheGJYYt4Hzjwv2mm5ZRIPswj15 YOOdInxAMeBWA== X-Nifty-SrcIP: [110.4.221.123] Date: Thu, 16 Sep 2021 18:09:05 +0900 From: Takashi Yano To: cygwin-developers@cygwin.com Subject: Re: cygrunsrv + sshd + rsync = 20 times too slow -- throttled? Message-Id: <20210916180905.5f857dad0568be96ac36cba5@nifty.ne.jp> In-Reply-To: <99e3ac84-bee1-4abd-de9a-4ea2e7b62b61@cornell.edu> References: <20210915092100.796985ae33039f3184483450@nifty.ne.jp> <20210915094454.42ef1d085d9bf92a1af8d39a@nifty.ne.jp> <20210915095911.415d174ea38fb2d2ea8e5432@nifty.ne.jp> <20210915194858.845bcd54c0c63246b40703a8@nifty.ne.jp> <20210915205433.014102a9c1204687135e1417@nifty.ne.jp> <20210915220450.a96397d8b8159d9adfbdab07@nifty.ne.jp> <3ca95472-9fb2-3e62-3e28-1bd2f85bc018@cornell.edu> <99e3ac84-bee1-4abd-de9a-4ea2e7b62b61@cornell.edu> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin-developers@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component developers mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Sep 2021 09:09:23 -0000 On Wed, 15 Sep 2021 13:09:30 -0400 Ken Brown wrote: > Could one of you (Corinna or Takashi) please check that I haven't done anything > stupid in the attached patches? If they look OK, I'll push them, and then maybe > we're ready for a test release. I encountered a problem with current git head. To reproduce the problem: 1) Make the CPU hight load state (100% load for all cores). 2) Run '/bin/echo AAAAAAAAAAA 2>&1 |cat' several times. Sometimes, no output is shown. This seems to be a race issue between multiple pipe writers. Now I am investigating the problem. -- Takashi Yano