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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87CFEC433FE for ; Tue, 5 Oct 2021 14:03:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 712D161175 for ; Tue, 5 Oct 2021 14:03:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235226AbhJEOFf (ORCPT ); Tue, 5 Oct 2021 10:05:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37376 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235269AbhJEOCe (ORCPT ); Tue, 5 Oct 2021 10:02:34 -0400 Received: from mail-qk1-x733.google.com (mail-qk1-x733.google.com [IPv6:2607:f8b0:4864:20::733]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D466C08C5CE for ; Tue, 5 Oct 2021 06:53:16 -0700 (PDT) Received: by mail-qk1-x733.google.com with SMTP id c7so19838999qka.2 for ; Tue, 05 Oct 2021 06:53:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:references:in-reply-to:mime-version:thread-index:date :message-id:subject:to:cc; bh=eQF7FyRWOCnZboI17Guxu51dkSRFuZrsBOaJYa0qutc=; b=DgInY4ZX50LXh/JgVvxeQIQvJgGZtLhT5bBLUsQtdZwZFoDPq+ERfh46p5wt6BU7lb 7c78UHYITrOPqzMiqEOzpoBnxLf0hsfx3q+b7uvk/OI3rZoEbH71vrxCz+iYMZ8UY5T5 eOF8T8ix6YJUCGIhOspKpM/8L5YhfUoQYfsW4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:references:in-reply-to:mime-version :thread-index:date:message-id:subject:to:cc; bh=eQF7FyRWOCnZboI17Guxu51dkSRFuZrsBOaJYa0qutc=; b=nyc54jGq0FzjFSeUsnE3e7TfQffeqxUN9oiER0KiYqx+86hBTxAkO8EHXRgt6s25Au 8nwWTubNgVsAveaouOjaavllpUyDh9xUXDuoDMnTLSaVVP6WGp7Z3gDrPspLAJel97p0 WwmhFLEhwl2UBmh9UB07hFMQETbUyxsA9DZZDZPhYWyKf5IUVntNKJNkz0hb3/tOtuiR kFW5PuC2oaZhYUrwpSbk9+HHRAjOLihof5c8Nsv48zTggZrcRDfLuXO+IETAuXse8lAS 4HZ32U3xKAdUkUgYDx9E7uSiV57yaVVPzbACnAOjSl0y6/VDoNpCTP6jpU69WTnwpdTs BsNA== X-Gm-Message-State: AOAM5338YbHpHoV3YK5e4TWmBFDxUzCgVDl0f5TDd2+BGhblFjpMUu2Y dF6w6aEHfkpD6dNsI8jaWGbgMgchPYcc3dGsp+wTzQ== X-Google-Smtp-Source: ABdhPJxOzWQHTttWe3IjCBtlULxFzl8+MBVCWrQvdkyxI+zv2cyhv24AZxKRrkGi35iAwAMhcJ7m94pmrJgy3z6hqCo= X-Received: by 2002:a37:8242:: with SMTP id e63mr15363774qkd.294.1633441995106; Tue, 05 Oct 2021 06:53:15 -0700 (PDT) From: Kashyap Desai References: <1633429419-228500-1-git-send-email-john.garry@huawei.com> <81d9e019-b730-221e-a8c0-f72a8422a2ec@huawei.com> In-Reply-To: <81d9e019-b730-221e-a8c0-f72a8422a2ec@huawei.com> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AQGgGyzjlHsoUBOKQforaoyr3oYZHgFiajqbAYnHiCCsHEhW8A== Date: Tue, 5 Oct 2021 19:23:13 +0530 Message-ID: Subject: RE: [PATCH v5 00/14] blk-mq: Reduce static requests memory footprint for shared sbitmap To: John Garry , Jens Axboe Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, hare@suse.de, linux-scsi@vger.kernel.org Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000e6177f05cd9b5944" Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org --000000000000e6177f05cd9b5944 Content-Type: text/plain; charset="UTF-8" > -----Original Message----- > From: John Garry [mailto:john.garry@huawei.com] > Sent: Tuesday, October 5, 2021 7:05 PM > To: Jens Axboe ; kashyap.desai@broadcom.com > Cc: linux-block@vger.kernel.org; linux-kernel@vger.kernel.org; > ming.lei@redhat.com; hare@suse.de; linux-scsi@vger.kernel.org > Subject: Re: [PATCH v5 00/14] blk-mq: Reduce static requests memory > footprint for shared sbitmap > > On 05/10/2021 13:35, Jens Axboe wrote: > >> Baseline is 1b2d1439fc25 (block/for-next) Merge branch > >> 'for-5.16/io_uring' > >> into for-next > > Let's get this queued up for testing, thanks John. > > Cheers, appreciated > > @Kashyap, You mentioned that when testing you saw a performance > regression from v5.11 -> v5.12 - any idea on that yet? Can you describe > the > scenario, like IO scheduler and how many disks and the type? Does > disabling > host_tagset_enable restore performance? John - I am still working on this. System was not available due to some other debugging. > > From checking differences between those kernels, I don't see anything > directly relevant in sbitmap support or in the megaraid sas driver. > > Thanks, > John --000000000000e6177f05cd9b5944 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQcAYJKoZIhvcNAQcCoIIQYTCCEF0CAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3HMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t 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