From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_RED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B19FC433E0 for ; Tue, 19 Jan 2021 01:33:49 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 26AC9230FA for ; Tue, 19 Jan 2021 01:33:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 26AC9230FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id BD12623067; Tue, 19 Jan 2021 01:33:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QSAFBbXLBxtA; Tue, 19 Jan 2021 01:33:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 9141222E20; Tue, 19 Jan 2021 01:33:47 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 73A90C08A1; Tue, 19 Jan 2021 01:33:47 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id BFBFAC013A for ; Tue, 19 Jan 2021 01:33:46 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id A61B08464C for ; Tue, 19 Jan 2021 01:33:46 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hho7bggHCQpC for ; Tue, 19 Jan 2021 01:33:46 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from out30-130.freemail.mail.aliyun.com (out30-130.freemail.mail.aliyun.com [115.124.30.130]) by fraxinus.osuosl.org (Postfix) with ESMTPS id BA87784640 for ; Tue, 19 Jan 2021 01:33:45 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R891e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04423; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=5; SR=0; TI=SMTPD_---0UMC0JGl_1611020021; Received: from admindeMacBook-Pro-2.local(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UMC0JGl_1611020021) by smtp.aliyun-inc.com(127.0.0.1); Tue, 19 Jan 2021 09:33:41 +0800 Subject: Re: [PATCH RFC] virtio-blk: support per-device queue depth To: Jason Wang , Joseph Qi , "Michael S. Tsirkin" References: <1610942338-78252-1-git-send-email-joseph.qi@linux.alibaba.com> From: JeffleXu Message-ID: <4141645d-6dfc-110c-bfcd-03641df8332c@linux.alibaba.com> Date: Tue, 19 Jan 2021 09:33:41 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: linux-block@vger.kernel.org, virtualization@lists.linux-foundation.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" CgpPbiAxLzE4LzIxIDE6MjUgUE0sIEphc29uIFdhbmcgd3JvdGU6Cj4gCj4gT24gMjAyMS8xLzE4 IOS4iuWNiDExOjU4LCBKb3NlcGggUWkgd3JvdGU6Cj4+IG1vZHVsZSBwYXJhbWV0ZXIgJ3ZpcnRi bGtfcXVldWVfZGVwdGgnIHdhcyBmaXJzdGx5IGludHJvZHVjZWQgZm9yCj4+IHRlc3RpbmcvYmVu Y2htYXJraW5nIHB1cnBvc2VzIGRlc2NyaWJlZCBpbiBjb21taXQgZmM0MzI0YjQ1OTdjCj4+ICgi dmlydGlvLWJsazogYmFzZSBxdWV1ZS1kZXB0aCBvbiB2aXJ0cXVldWUgcmluZ3NpemUgb3IgbW9k dWxlIHBhcmFtIikuCj4+IFNpbmNlIHdlIGhhdmUgZGlmZmVyZW50IHZpcnRpby1ibGsgZGV2aWNl cyB3aGljaCBoYXZlIGRpZmZlcmVudAo+PiBjYXBhYmlsaXRpZXMsIGl0IHJlcXVpcmVzIHRoYXQg d2Ugc3VwcG9ydCBwZXItZGV2aWNlIHF1ZXVlIGRlcHRoIGluc3RlYWQKPj4gb2YgcGVyLW1vZHVs ZS4gU28gZGVmYXVsdGx5IHVzZSB2cSBmcmVlIGVsZW1lbnRzIGlmIG1vZHVsZSBwYXJhbWV0ZXIK Pj4gJ3ZpcnRibGtfcXVldWVfZGVwdGgnIGlzIG5vdCBzZXQuCj4gCj4gCj4gSSB3b25kZXIgaWYg aXQncyBiZXR0ZXIgdG8gdXNlIHN5c2ZzIGluc3RlYWQgKG9yIHdoZXRoZXIgaXQgaGFzIGFscmVh ZHkKPiBoYWQgc29tZXRoaW5nIGxpa2UgdGhpcyBpbiB0aGUgYmxvY2tlciBsYXllcikuCj4gCgoi L3N5cy9ibG9jay88ZGV2Pi9xdWV1ZS9ucl9yZXF1ZXN0cyIgaW5kZWVkIHdvcmtzLCBidXQgaXNu J3QgYmV0dGVyIHRvCnNldCBxdWV1ZV9kZXB0aCBhY2NvcmRpbmcgdG8gdGhlIGhhcmR3YXJlIGNh cGFiaWxpdHkgYXQgdGhlIHZlcnkgZmlyc3Q/CkFGQUlLLCBudm1lIGp1c3Qgc2V0IHBlci1kZXZp Y2UgcXVldWVfZGVwdGggYXQgaW5pdGlhbGl6aW5nIHBoYXNlLgoKVGhhbmtzLApKZWZmbGUKCj4g Cj4gCj4+Cj4+IFNpZ25lZC1vZmYtYnk6IEpvc2VwaCBRaSA8am9zZXBoLnFpQGxpbnV4LmFsaWJh YmEuY29tPgo+PiAtLS0KPj4gwqAgZHJpdmVycy9ibG9jay92aXJ0aW9fYmxrLmMgfCAxMiArKysr KysrLS0tLS0KPj4gwqAgMSBmaWxlIGNoYW5nZWQsIDcgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlv bnMoLSkKPj4KPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvYmxvY2svdmlydGlvX2Jsay5jIGIvZHJp dmVycy9ibG9jay92aXJ0aW9fYmxrLmMKPj4gaW5kZXggMTQ1NjA2ZC4uZjgzYTQxNyAxMDA2NDQK Pj4gLS0tIGEvZHJpdmVycy9ibG9jay92aXJ0aW9fYmxrLmMKPj4gKysrIGIvZHJpdmVycy9ibG9j ay92aXJ0aW9fYmxrLmMKPj4gQEAgLTcwNSw2ICs3MDUsNyBAQCBzdGF0aWMgaW50IHZpcnRibGtf cHJvYmUoc3RydWN0IHZpcnRpb19kZXZpY2UgKnZkZXYpCj4+IMKgwqDCoMKgwqAgdTMyIHYsIGJs a19zaXplLCBtYXhfc2l6ZSwgc2dfZWxlbXMsIG9wdF9pb19zaXplOwo+PiDCoMKgwqDCoMKgIHUx NiBtaW5faW9fc2l6ZTsKPj4gwqDCoMKgwqDCoCB1OCBwaHlzaWNhbF9ibG9ja19leHAsIGFsaWdu bWVudF9vZmZzZXQ7Cj4+ICvCoMKgwqAgdW5zaWduZWQgaW50IHF1ZXVlX2RlcHRoOwo+PiDCoCDC oMKgwqDCoMKgIGlmICghdmRldi0+Y29uZmlnLT5nZXQpIHsKPj4gwqDCoMKgwqDCoMKgwqDCoMKg IGRldl9lcnIoJnZkZXYtPmRldiwgIiVzIGZhaWx1cmU6IGNvbmZpZyBhY2Nlc3MgZGlzYWJsZWRc biIsCj4+IEBAIC03NTUsMTcgKzc1NiwxOCBAQCBzdGF0aWMgaW50IHZpcnRibGtfcHJvYmUoc3Ry dWN0IHZpcnRpb19kZXZpY2UKPj4gKnZkZXYpCj4+IMKgwqDCoMKgwqDCoMKgwqDCoCBnb3RvIG91 dF9mcmVlX3ZxOwo+PiDCoMKgwqDCoMKgIH0KPj4gwqAgLcKgwqDCoCAvKiBEZWZhdWx0IHF1ZXVl IHNpemluZyBpcyB0byBmaWxsIHRoZSByaW5nLiAqLwo+PiAtwqDCoMKgIGlmICghdmlydGJsa19x dWV1ZV9kZXB0aCkgewo+PiAtwqDCoMKgwqDCoMKgwqAgdmlydGJsa19xdWV1ZV9kZXB0aCA9IHZi bGstPnZxc1swXS52cS0+bnVtX2ZyZWU7Cj4+ICvCoMKgwqAgaWYgKGxpa2VseSghdmlydGJsa19x dWV1ZV9kZXB0aCkpIHsKPj4gK8KgwqDCoMKgwqDCoMKgIHF1ZXVlX2RlcHRoID0gdmJsay0+dnFz WzBdLnZxLT5udW1fZnJlZTsKPj4gwqDCoMKgwqDCoMKgwqDCoMKgIC8qIC4uLiBidXQgd2l0aG91 dCBpbmRpcmVjdCBkZXNjcywgd2UgdXNlIDIgZGVzY3MgcGVyIHJlcSAqLwo+PiDCoMKgwqDCoMKg wqDCoMKgwqAgaWYgKCF2aXJ0aW9faGFzX2ZlYXR1cmUodmRldiwgVklSVElPX1JJTkdfRl9JTkRJ UkVDVF9ERVNDKSkKPj4gLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgdmlydGJsa19xdWV1ZV9kZXB0 aCAvPSAyOwo+PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBxdWV1ZV9kZXB0aCAvPSAyOwo+PiAr wqDCoMKgIH0gZWxzZSB7Cj4+ICvCoMKgwqDCoMKgwqDCoCBxdWV1ZV9kZXB0aCA9IHZpcnRibGtf cXVldWVfZGVwdGg7Cj4+IMKgwqDCoMKgwqAgfQo+PiDCoCDCoMKgwqDCoMKgIG1lbXNldCgmdmJs ay0+dGFnX3NldCwgMCwgc2l6ZW9mKHZibGstPnRhZ19zZXQpKTsKPj4gwqDCoMKgwqDCoCB2Ymxr LT50YWdfc2V0Lm9wcyA9ICZ2aXJ0aW9fbXFfb3BzOwo+PiAtwqDCoMKgIHZibGstPnRhZ19zZXQu cXVldWVfZGVwdGggPSB2aXJ0YmxrX3F1ZXVlX2RlcHRoOwo+PiArwqDCoMKgIHZibGstPnRhZ19z ZXQucXVldWVfZGVwdGggPSBxdWV1ZV9kZXB0aDsKPj4gwqDCoMKgwqDCoCB2YmxrLT50YWdfc2V0 Lm51bWFfbm9kZSA9IE5VTUFfTk9fTk9ERTsKPj4gwqDCoMKgwqDCoCB2YmxrLT50YWdfc2V0LmZs YWdzID0gQkxLX01RX0ZfU0hPVUxEX01FUkdFOwo+PiDCoMKgwqDCoMKgIHZibGstPnRhZ19zZXQu Y21kX3NpemUgPQoKLS0gClRoYW5rcywKSmVmZmxlCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fClZpcnR1YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFs aXphdGlvbkBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91 bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby92aXJ0dWFsaXphdGlvbg==