From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: "Jiang, Dave" Subject: RE: fio and total latency percentile Date: Thu, 14 Sep 2017 16:45:10 +0000 Message-ID: <112A412BB11A1242B37129D931BCE534734BD274@fmsmsx116.amr.corp.intel.com> References: <53cbc635-d9a3-6ef3-3634-309db0fe03d5@intel.com> <0c340072-33cc-2171-c149-1ef0b8f94fce@kernel.dk> <2fea8192-2373-a27e-c484-07fe5854aab7@kernel.dk> In-Reply-To: Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Return-Path: dave.jiang@intel.com To: Jens Axboe Cc: "fio@vger.kernel.org" , "Williams, Dan J" List-ID: DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogSmVucyBBeGJvZSBbbWFp bHRvOmF4Ym9lQGtlcm5lbC5ka10NCj4gU2VudDogV2VkbmVzZGF5LCBTZXB0ZW1iZXIgMTMsIDIw MTcgOTowOSBQTQ0KPiBUbzogSmlhbmcsIERhdmUgPGRhdmUuamlhbmdAaW50ZWwuY29tPg0KPiBD YzogZmlvQHZnZXIua2VybmVsLm9yZzsgV2lsbGlhbXMsIERhbiBKIDxkYW4uai53aWxsaWFtc0Bp bnRlbC5jb20+DQo+IFN1YmplY3Q6IFJlOiBmaW8gYW5kIHRvdGFsIGxhdGVuY3kgcGVyY2VudGls ZQ0KPiANCj4gT24gMDkvMTMvMjAxNyAxMDowMyBQTSwgSmVucyBBeGJvZSB3cm90ZToNCj4gPiBP biAwOS8xMy8yMDE3IDA0OjU5IFBNLCBKZW5zIEF4Ym9lIHdyb3RlOg0KPiA+PiBPbiAwOS8wNy8y MDE3IDAxOjU5IFBNLCBEYXZlIEppYW5nIHdyb3RlOg0KPiA+Pj4gSmVucywNCj4gPj4+IGZpbyBj YW4gZGlzcGxheSBjb21wbGV0aW9uIGxhdGVuY3kgcGVyY2VudGFnZXMgdmlhIHRoZSBwZXJjZW50 aWxlX2xpc3QNCj4gPj4+IHBhcmFtZXRlci4gSSBjYW4gZ2V0IHA5MCBhbmQgcDk5IG51bWJlcnMg Zm9yIGNsYXQgdmlhDQo+ID4+PiBwZXJjZW50aWxlX2xpc3Q9OTA6OTkuIElzIHRoZXJlIGEgd2F5 IHRvIGdldCB0aGUgb3ZlcmFsbCBsYXRlbmN5IGZvcg0KPiA+Pj4gcGVyY2VudGlsZT8gSSdtIGlu dGVyZXN0ZWQgaW4gdGhlIHRvdGFsIGxhdGVuY3kgbWVhc3VyZW1lbnRzIGZvciBwOTAgYW5kDQo+ ID4+PiBwOTkgd2hpbGUgZG9pbmcgc29tZSBtZWFzdXJlbWVudHMgb24gdGhlIHBlcnNpc3RlbnQg bWVtb3J5IGJsb2NrIGRyaXZlcg0KPiA+Pj4gYW5kIHBsYXlpbmcgYXJvdW5kIHVzaW5nIERNQSBl bmdpbmVzIGZvciB0cmFuc2Zlci4NCj4gPj4NCj4gPj4gSWYgSSB1bmRlcnN0YW5kIGNvcnJlY3Rs eSwgeW91IGFyZSB1c2luZyBhbiBJTyBlbmdpbmUgdGhhdCBpcyBhc3luYywgYW5kDQo+ID4+IHlv dSB3YW50IHRoZSBsYXRlbmN5IHBlcmNlbnRpbGVzIHRvIHJlZmxlY3QgdG90YWwgSU8gdGltZQ0K PiA+PiAoc3VibWlzc2lvbitjb21wbGV0aW9uKSwgbm90IGp1c3QgY29tcGxldGlvbiB0aW1lPw0K PiA+Pg0KPiA+PiBXZSBjYW4ndCBjdXJyZW50bHkgZG8gdGhhdCwgYnV0IGl0J2QgYmUgdHJpdmlh bCB0byBkbyB3aXRoIGFuIG9wdGlvbiBvZg0KPiA+PiBzb21lIHNvcnQuIEN1cnJlbnRseSB0aGUg cGVyY2VudGlsZSBlbmFibGUgb3B0aW9uIGlzIGNsYXRfcGVyY2VudGlsZSwNCj4gPj4gYW5kIGl0 IGRlZmF1bHRzIHRvIG9uLiBXZSBjb3VsZCBoYXZlIGEgbGF0X3BlcmNlbnRpbGUgb3B0aW9uIHRo YXQsIGlmDQo+ID4+IGVuYWJsZWQsIHdvdWxkIGNoYW5nZSB0aGUgcmVwb3J0aW5nIHRvIGJlaW5n IHRvdGFsIElPIHRpbWUuIElPVzoNCj4gPj4NCj4gPj4gY2xhdF9wZXJjZW50aWxlPTEJTGF0ZW5j eSBwZXJjZW50aWxlcyBhcmUgY29tcGxldGlvbiBsYXRlbmNpZXMNCj4gPj4gbGF0X3BlcmNlbnRp bGU9MQlMYXRlbmN5IHBlcmNlbnRpbGVzIGFyZSB0b3RhbCBJTyB0aW1lDQo+ID4+DQo+ID4+IGFu ZCBoYXZlIHRoZW0gYmUgbXV0dWFsbHkgZXhjbHVzaXZlLg0KPiA+DQo+ID4gU29tZXRoaW5nIGxp a2UgdGhlIGJlbG93LiBQbGVhc2UgdHJ5IGl0IG91dCBhbmQgc2VlIGlmIGl0IHdvcmtzIGZvciB5 b3UuDQo+IA0KPiBPciBqdXN0IHRyeSBjdXJyZW50IC1naXQuIEkgZ290IGNvY2t5IGFuZCBqdXN0 IGNvbW1pdHRlZCBpdC4NCg0KV29ya3MgZ3JlYXQhIEV4YWN0bHkgd2hhdCBJIG5lZWQuIFRoYW5r cyBKZW5zIQ0K