From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtprelay.b.hostedemail.com (smtprelay0178.b.hostedemail.com [64.98.42.178]) by sourceware.org (Postfix) with ESMTPS id CBFF83857021 for ; Wed, 16 Sep 2020 15:16:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org CBFF83857021 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=cruzio.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=robs@cruzio.com Received: from filter.hostedemail.com (10.5.19.248.rfc1918.com [10.5.19.248]) by smtprelay01.b.hostedemail.com (Postfix) with ESMTP id 7617B180899BE for ; Wed, 16 Sep 2020 15:16:47 +0000 (UTC) X-Session-Marker: 726F6273406372757A696F2E636F6D X-Spam-Summary: 2, 0, 0, , d41d8cd98f00b204, robs@cruzio.com, , RULES_HIT:41:152:355:379:421:854:973:988:989:1260:1261:1277:1311:1313:1314:1345:1381:1437:1515:1516:1518:1534:1540:1593:1594:1711:1730:1747:1777:1792:2198:2199:2393:2559:2562:2731:2910:3138:3139:3140:3141:3142:3352:3865:3866:3867:3868:3870:3871:3872:5007:7652:7875:7903:10004:10226:10400:10848:11658:11914:12296:12545:12555:12663:13069:13071:13161:13229:13311:13357:13894:14180:21080:21627:30054:30079, 0, RBL:none, CacheIP:none, Bayesian:0.5, 0.5, 0.5, Netcheck:none, DomainCache:0, MSF:not bulk, SPF:, MSBL:0, DNSBL:none, Custom_rules:0:0:0, LFtime:3, LUA_SUMMARY:none X-HE-Tag: grain02_0d0dbe22711a X-Filterd-Recvd-Size: 3225 Received: from [10.0.0.9] (unknown [75.106.2.247]) (Authenticated sender: robs@cruzio.com) by omf08.b.hostedemail.com (Postfix) with ESMTPA for ; Wed, 16 Sep 2020 15:16:42 +0000 (UTC) To: cygwin@cygwin.com Reply-To: dunciad@cantab.net From: Rob Stevens Subject: Very slow i/o to external hard drive's HFS+ Autocrypt: addr=robs@cruzio.com; prefer-encrypt=mutual; keydata= mQGiBEsVvTkRBACHtc8hzqpRDgrxvLuubFRuJ0tU+9R1CNdEPxFNDVvIw6l/y/tHQkPS1y9n yX0s/Uc35zmwnlq2ybBp/j6MMcnvO6srBmb/9I6nV9k535id2emrXHhraf+L6aqxgHGIYuqJ VssRvwYi/ItaVpgNcI5TaIT2EN/k37O7g8FXiIU/uwCgsfc+B2nogM2EaxS8yE1K9gul5uUD /0RilzWYk5bd8TgGaxQKLyjsU8Q8CUXNl1Xgc7nmPu9CG3axHnjPoxutGqBBo2ZQpuxjKGNp PLjAEOdEjPU242xqVoSBX+Jg3VJWyRWSGqICR5DsYa8stieNT561AwSBPhss/hZ36RgSA2fD Hpc8PBqociHrWyF4VMx+YwsRyi09A/9c5rkq2fBOUaX+6v77YqxliJpwYD/mBWKXNstEyIvU SdWT5a3yqLX4cBOlfYgYf7m3SKxuWFCx1a1XGKL3uiK6NP9BW/WResk1nHabELDlRdQcRC7g HDEBJVzUpv3nVuOLpGhJg55+Hbc9VVBvy6CTQD+7taFbi30/hMIMQ78lLLQgUm9iZXJ0IFN0 ZXZlbnMgPHJvYnNAY3J1emlvLmNvbT6IYAQTEQIAIAUCSxW9OQIbAwYLCQgHAwIEFQIIAwQW AgMBAh4BAheAAAoJEAW+m53BgLY73k0An0Lg+DJLQwU+hSodWTLgX4ZdceFWAKCNuy3Yt6B5 ndTPPKvVWPLTmss5I7kCDQRLFb05EAgAiqvAJGxIUqjLnKyi+nHhHDV7ijYce77le9S06uf9 glkY4WbVqzlnG/UCsoSXEFMBYExjZp8vdo5awEIDj2bFMgn+EILLzhhuPdYt8cyLvLAfTRjD g5FJWaZ/DfE6to9QQhAEHU3pTzV9/wJwqHo9Id/p8frTIOZLogQFiX3BlR6g3hJdtNXC7/JT LphwBqkDar1P+SvtavOiWa/EjLbSP+mFVDjcvO5/gWvMAPxg7A1meu3wT1J4dlMGzJtdLcR1 od7eJO3MLdgfb22820Ds9dWcwMlu0boKADtbsfr5pOFMlCJV3Ki16jOgSqcKKPon4mLV68rb 7GvlpmNUq3/ZnwADBQf/aB4YSU0DY8mr2sXFRYA1JTloa/5gLnnpFtd8v26mSUSg6dZt1dWV Kck1dSdj96gSanh1arWOQB8wumLhENYz2ohrE+7CvZ7KFmUVmMywiQmNbCKkOTObekraUL60 VHSoav8bkbwoDVoHuhHyJRm1AOZGEjQTUEZGjupgt05yAu0d0YzDkyd5N11VnVqoEH8TYhBk Ld12wmIg+qZv15yaH2rvznw5VkYpvjUIfkyK3NH74Ri/rs4RJjIzN8+7djlLnSUkqcfWBl+b nN7IYF63MTw+EDTT2YhCU3l7iLdOsY0jSe15/GoFR6FOT6zH7AX/0/2rX8ElmB/nguGp3mjz johJBBgRAgAJBQJLFb05AhsMAAoJEAW+m53BgLY76uwAoKPP3yBV4lrD3AVFT5wGEfnUvNaO AKCZcn/LCCajZp9KRK6tKjUT1fJw5A== Message-ID: <78677a3e-7f0c-d9e0-8542-6ab44ae5fe75@cruzio.com> Date: Wed, 16 Sep 2020 11:16:38 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2020 15:16:49 -0000 Hello I have a removable hard drive sporting an HFS+ connected to a USB3 port. The drive is a Seagate Slim Line 2T. I am using a driver from Paragon Sofware to write/read from this drive. I am running Windows10 build 19041.508 (ie up to date) Writing to this file system using the unix cp command is incredibly slow: cp my_file /cygdrive/h/some_destination The same write, using copy paste in Windows Explorer is much faster. I have not precisely timed it, but it is way more than an order of magnitude faster (a 1G file took approx 10 mins: the graphical display shows just a few seconds). (In Windows Device Manager I have the policy for the drive set to be "Better Performance"  and not "Quick Removal" -- apparently the latter can lead to dramatic degradation in performance). Can anyone suggest what might be the cause? Rob Stevens