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Thu, 20 Apr 2017 09:43:54 -0400 Received: from MX204CL04.corp.emc.com ([fe80::5c2f:a83c:a32d:4b29]) by MXHUB225.corp.emc.com ([10.253.68.95]) with mapi id 14.03.0266.001; Thu, 20 Apr 2017 09:43:52 -0400 To: "cygwin@cygwin.com" Subject: RE: long I/O delays when strace is running Date: Fri, 21 Apr 2017 00:11:00 -0000 Message-ID: <91DCAC3CB99C724EB365BB64677FBE7B16EBBD@MX204CL04.corp.emc.com> References: In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Sentrion-Hostname: mailusrhubprd02.lss.emc.com X-RSA-Classifications: public X-IsSubscribed: yes X-SW-Source: 2017-04/txt/msg00247.txt.bz2 DQpJIGhhdmVuJ3QgcnVuIEN5Z3dpbiBFeHBlY3QgZm9yIGFib3V0IDYgbW90 aHMgb24gV2luZG93cyBidXQgaXQgd2FzIGJlaGF2aW5nIGZpbmUgbGFzdCB0 aW1lIEkgZGlkLiAgDQpPbmUgdGhpbmcgSSBhbSBhd2FyZSBvZiBpcyB5b3Ug Y2FuJ3QgaW50ZXJydXB0IHNsZWVwIGluIFRDTC4gIFRoZSBzbGVlcCBtdXN0 DQpjb21wbGV0ZSB1bnRpbCB0aGUgQ29udHJvbCBDIGlzIHByb2Nlc3NlZCAo cmVnYXJkbGVzcyBvZiB3aGV0aGVyIHlvdSByZWRpcmVjdGVkIHNpZ25hbHMN CnRvIHlvdXIgb3duIHJvdXRpbmVzKS4gIE90aGVyd2lzZSBzaWduYWxzIHNl ZW1lZCB0byBiZSBwcm9jZXNzZWQgaW1tZWRpYXRlbHkuDQoNClBlcmhhcHMg c29tZSBvdGhlciBzZXJ2aWNlIGlzIGludGVyZmVyaW5nLiAgWW91IG1heSB3 YW50IHRvIGRpc2FibGUgb3RoZXIgc2VydmljZXMuDQoNCkdsZW5uDQoNCj09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT0NCg0KDQpXZWxsIEkndmUgc29sdmVkIG9uZSBw cm9ibGVtLCBidXQgbm93IEkgaGF2ZSBhbm90aGVyIG9uZS4gVG8gdHJ5IHRv IHVuZGVyc3RhbmQgd2h5IGV4Y2VwdCBpcyBnZXR0aW5nIGJyb2tlbiBwaXBl cyAoY2hpbGQgcHJvY2Vzc2VzIGFyZSAiZ29pbmcgYXdheSIpLCBJIG1vZGlm aWVkIERlamFHTlUncyAvdXNyL2Jpbi9ydW50ZXN0IHNvIHRoYXQgaXQgd291 bGQgc3RyYWNlIGVhY2ggZXhjZXB0IHByb2Nlc3M6DQoNCi1leGVjICIkZXhw ZWN0YmluIiAkZGVidWcgLS0gIiRydW5wYXRoIi9ydW50ZXN0LmV4cCAkdGFy Z2V0ICR7MSsiJEAifQ0KK2V4ZWMgc3RyYWNlIC0tb3V0cHV0PS90bXAvcnVu dGVzdC4kJC5sb2cgLS10cmFjZS1jaGlsZHJlbg0KLS1tYXNrPXN0YXJ0dXAg ICRleHBlY3RiaW4gJGRlYnVnIC0tICRydW5wYXRoL3J1bnRlc3QuZXhwICR0 YXJnZXQgJHsxKyIkQCJ9DQoNCkhvd2V2ZXIsIHdoZW4gSSBydW4gbWFrZSAt a2o4IGNoZWNrIGFmdGVyIHRoaXMsIEN5Z3dpbiBwcm9jZXNzZXMgdGhhdCBk byANCmZpbGUgSS9PIGFuZCBldmVuIHBzIGJlY29tZSB2ZXJ5IHVucmVzcG9u c2l2ZSBhbmQgQ1BVIHV0aWxpemF0aW9uIGlzIGxvdyANCihub3QgdG8gc2F5 IHRoYXQgRGVqYUdOVSBpcyBnb29kIGF0IGJhbGFuY2luZyB0aGUgdGVzdCBs b2FkKS4gSWYgSSBoaXQgDQpjdHJsLUMgb24gdGhlIG1ha2UgcHJvY2Vzcywg aXQgd29uJ3QgZXhpdCBmb3Igc29tZXdoZXJlIGFyb3VuZCAzMCANCnNlY29u ZHMuICBJIGFtIGFibGUgdG8gcmVwcm9kdWNlIHRoaXMgdG8gc29tZSBkZWdy ZWUgd2l0aCB0aGlzIHNpbXBsZSANCnNuaXBwZXQsIGFsdGhvdWdoIHRoZSBk ZWxheXMgYXJlbid0IGFzIGxvbmcgYXMgZG9pbmcgdGhlIGFib3ZlOg0KDQpm b3IgKChpID0gMDsgaSA8IDY0OyArK2kpKTsgZG8gc3RyYWNlIC0tb3V0cHV0 PS90bXAvc2xlZXAuJCQubG9nIA0KLS10cmFjZS1jaGlsZHJlbiAtLW1hc2s9 c3RhcnR1cCBzbGVlcCA2NDsgZG9uZQ0KDQpDYW4gYW55Ym9keSB0cnkgdGhp cyBhbmQgc2VlIGlmIHRoZXkgZ2V0IGRlbGF5cyB3aGVuIHJ1bm5pbmcgcHMg LWVmIG9yIA0Kc29tZSBzdWNoPw0KDQpUaGFua3MsDQpEYW5pZWwNCg0KLS0N ClByb2JsZW0gcmVwb3J0czogICAgICAgaHR0cDovL2N5Z3dpbi5jb20vcHJv YmxlbXMuaHRtbA0KRkFROiAgICAgICAgICAgICAgICAgICBodHRwOi8vY3ln d2luLmNvbS9mYXEvDQpEb2N1bWVudGF0aW9uOiAgICAgICAgIGh0dHA6Ly9j eWd3aW4uY29tL2RvY3MuaHRtbA0KVW5zdWJzY3JpYmUgaW5mbzogICAgICBo dHRwOi8vY3lnd2luLmNvbS9tbC8jdW5zdWJzY3JpYmUtc2ltcGxlDQoNCgDQ otLQ0KUHJvYmxlbSByZXBvcnRzOiAgICAgICBodHRwOi8vY3lnd2luLmNvbS 9wcm9ibGVtcy5odG1sDQpGQVE6ICAgICAgICAgICAgICAgICAgIGh0dHA6Ly 9jeWd3aW4uY29tL2ZhcS8NCkRvY3VtZW50YXRpb246ICAgICAgICAgaHR0cD ovL2N5Z3dpbi5jb20vZG9jcy5odG1sDQpVbnN1YnNjcmliZSBpbmZvOiAgIC AgIGh0dHA6Ly9jeWd3aW4uY29tL21sLyN1bnN1YnNjcmliZS1zaW1wbGUNCg 0A==