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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 43180C3A5A2 for ; Fri, 20 Sep 2019 20:12:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1907E208C0 for ; Fri, 20 Sep 2019 20:12:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729584AbfITUMt (ORCPT ); Fri, 20 Sep 2019 16:12:49 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:27908 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726094AbfITUMs (ORCPT ); Fri, 20 Sep 2019 16:12:48 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8KKBp49107401; Fri, 20 Sep 2019 16:12:14 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v55dx8k2e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 16:12:14 -0400 Received: from m0098396.ppops.net (m0098396.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x8KKBsfE107895; Fri, 20 Sep 2019 16:12:14 -0400 Received: from ppma04dal.us.ibm.com (7a.29.35a9.ip4.static.sl-reverse.com [169.53.41.122]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v55dx8k1r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 16:12:14 -0400 Received: from pps.filterd (ppma04dal.us.ibm.com [127.0.0.1]) by ppma04dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x8KKAGVB020744; Fri, 20 Sep 2019 20:12:13 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma04dal.us.ibm.com with ESMTP id 2v3vbuw0x5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 20:12:13 +0000 Received: from b03ledav006.gho.boulder.ibm.com (b03ledav006.gho.boulder.ibm.com [9.17.130.237]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8KKCB4C50004354 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 20 Sep 2019 20:12:11 GMT Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ECBBDC6059; Fri, 20 Sep 2019 20:12:10 +0000 (GMT) Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 921CFC6055; Fri, 20 Sep 2019 20:12:06 +0000 (GMT) Received: from leobras.br.ibm.com (unknown [9.18.235.184]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 20 Sep 2019 20:12:06 +0000 (GMT) Message-ID: <1f5d9380418ad8bb90c6bbdac34716c650b917a0.camel@linux.ibm.com> Subject: Re: [PATCH v2 00/11] Introduces new count-based method for monitoring lockless pagetable wakls From: Leonardo Bras To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Arnd Bergmann , "Aneesh Kumar K.V" , Christophe Leroy , Andrew Morton , Dan Williams , Nicholas Piggin , Mahesh Salgaonkar , Thomas Gleixner , Richard Fontana , Ganesh Goudar , Allison Randal , Greg Kroah-Hartman , Mike Rapoport , YueHaibing , Ira Weiny , Jason Gunthorpe , John Hubbard , Keith Busch Date: Fri, 20 Sep 2019 17:12:00 -0300 In-Reply-To: <20190920195047.7703-1-leonardo@linux.ibm.com> References: <20190920195047.7703-1-leonardo@linux.ibm.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-nucwkzcjL6z05I66cwMm" User-Agent: Evolution 3.30.5 (3.30.5-1.fc29) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-09-20_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909200165 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-nucwkzcjL6z05I66cwMm Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable If a process (qemu) with a lot of CPUs (128) try to munmap() a large chunk of memory (496GB) mapped with THP, it takes an average of 275 seconds, which can cause a lot of problems to the load (in qemu case, the guest will lock for this time). Trying to find the source of this bug, I found out most of this time is spent on serialize_against_pte_lookup(). This function will take a lot of time in smp_call_function_many() if there is more than a couple CPUs running the user process. Since it has to happen to all THP mapped, it will take a very long time for large amounts of memory. By the docs, serialize_against_pte_lookup() is needed in order to avoid pmd_t to pte_t casting inside find_current_mm_pte(), or any lockless pagetable walk, to happen concurrently with THP splitting/collapsing. It does so by calling a do_nothing() on each CPU in mm->cpu_bitmap[], after interrupts are re-enabled.=20 Since, interrupts are (usually) disabled during lockless pagetable walk, and serialize_against_pte_lookup will only return after interrupts are enabled, it is protected. So, by what I could understand, if there is no lockless pagetable walk running, there is no need to call serialize_against_pte_lookup(). So, to avoid the cost of running serialize_against_pte_lookup(), I propose a counter that keeps track of how many find_current_mm_pte() are currently running, and if there is none, just skip=20 smp_call_function_many(). The related functions are: start_lockless_pgtbl_walk(mm) Insert before starting any lockless pgtable walk end_lockless_pgtbl_walk(mm) Insert after the end of any lockless pgtable walk (Mostly after the ptep is last used) running_lockless_pgtbl_walk(mm) Returns the number of lockless pgtable walks running On my workload (qemu), I could see munmap's time reduction from 275 seconds to 418ms. > Leonardo Bras (11): > powerpc/mm: Adds counting method to monitor lockless pgtable walks > asm-generic/pgtable: Adds dummy functions to monitor lockless pgtable > walks > mm/gup: Applies counting method to monitor gup_pgd_range > powerpc/mce_power: Applies counting method to monitor lockless pgtbl > walks > powerpc/perf: Applies counting method to monitor lockless pgtbl walks > powerpc/mm/book3s64/hash: Applies counting method to monitor lockless > pgtbl walks > powerpc/kvm/e500: Applies counting method to monitor lockless pgtbl > walks > powerpc/kvm/book3s_hv: Applies counting method to monitor lockless > pgtbl walks > powerpc/kvm/book3s_64: Applies counting method to monitor lockless > pgtbl walks > powerpc/book3s_64: Enables counting method to monitor lockless pgtbl > walk > powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing >=20 > arch/powerpc/include/asm/book3s/64/mmu.h | 3 +++ > arch/powerpc/include/asm/book3s/64/pgtable.h | 5 +++++ > arch/powerpc/kernel/mce_power.c | 13 ++++++++++--- > arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 ++ > arch/powerpc/kvm/book3s_64_mmu_radix.c | 20 ++++++++++++++++++-- > arch/powerpc/kvm/book3s_64_vio_hv.c | 4 ++++ > arch/powerpc/kvm/book3s_hv_nested.c | 8 ++++++++ > arch/powerpc/kvm/book3s_hv_rm_mmu.c | 9 ++++++++- > arch/powerpc/kvm/e500_mmu_host.c | 4 ++++ > arch/powerpc/mm/book3s64/hash_tlb.c | 2 ++ > arch/powerpc/mm/book3s64/hash_utils.c | 7 +++++++ > arch/powerpc/mm/book3s64/mmu_context.c | 1 + > arch/powerpc/mm/book3s64/pgtable.c | 20 +++++++++++++++++++- > arch/powerpc/perf/callchain.c | 5 ++++- > include/asm-generic/pgtable.h | 9 +++++++++ > mm/gup.c | 4 ++++ > 16 files changed, 108 insertions(+), 8 deletions(-) >=20 --=-nucwkzcjL6z05I66cwMm Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEMdeUgIzgjf6YmUyOlQYWtz9SttQFAl2FMpAACgkQlQYWtz9S ttQJDRAAm7UrD3Hn32mqNVvo0il+czdU8CD0TY9JTgwQVy5w623VhAlNK0RSqdbX NN6XebcOau//QQleUrXseAf4kuniMJZn62qDeUj0wcQMaVqSlpqF7+4KDIINVS7K WbymiNSCTGFYDG7575+kcBPn3baKWV6EoGe80qmd5DTXN5W5pBKbfHqJ36u/rEZA cKzVlDLOHxvQ/VopYSydx4wl3T+CcUziVNf3ooT83ktwOHUcGRMfFLsuAMK3Ws5P fLUbK4iWQgda8DH4pvDb9ZtfH/01+lqR7VJSUu9fDbtis5JNRt7TxwglPN3zf1vw eF4p75mlIIxk6KM7/kCksSqn6ZBiHS5ldehaYaKWwsuM4leTP32TYMOB7woOOgDL xW/KNxja+CuFhoIt3dsSDwFWAYwt3cSPsCtgYgiN4t2CkWZQaw+W+6j2wBYg7SPn iGg04qGNDr3Um3OklxU8GHgbkPmBKZ2Yjhxx9mdf0sLoF9//o3td3BrqP8sw4AXK bBnixpOpbVnTvUbK1sc1PyxEJ5qMmmS9kE2I05ysIKHvSPMoDZiXwW92MesXotoi 2Rocc4T0UP0tzTunADdc9iq2d8egHa1r9LjL49sP1FPNYUbYkeEJTjXyIXS07qVe sdQgYcZZ7NwvR0ZASqJCM2yKQBxMQ+Iv3pyUjXFyySlwhS2nSQk= =F3zh -----END PGP SIGNATURE----- --=-nucwkzcjL6z05I66cwMm-- 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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 1D2ABC3A5A2 for ; Fri, 20 Sep 2019 20:24:56 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 27C80208C0 for ; Fri, 20 Sep 2019 20:24:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 27C80208C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46ZlZD6ZqTzF4C2 for ; Sat, 21 Sep 2019 06:24:52 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=leonardo@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46ZlJ45t0gzF41w for ; Sat, 21 Sep 2019 06:12:36 +1000 (AEST) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8KKBp49107401; Fri, 20 Sep 2019 16:12:14 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v55dx8k2e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 16:12:14 -0400 Received: from m0098396.ppops.net (m0098396.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x8KKBsfE107895; Fri, 20 Sep 2019 16:12:14 -0400 Received: from ppma04dal.us.ibm.com (7a.29.35a9.ip4.static.sl-reverse.com [169.53.41.122]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v55dx8k1r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 16:12:14 -0400 Received: from pps.filterd (ppma04dal.us.ibm.com [127.0.0.1]) by ppma04dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x8KKAGVB020744; Fri, 20 Sep 2019 20:12:13 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma04dal.us.ibm.com with ESMTP id 2v3vbuw0x5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Sep 2019 20:12:13 +0000 Received: from b03ledav006.gho.boulder.ibm.com (b03ledav006.gho.boulder.ibm.com [9.17.130.237]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8KKCB4C50004354 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 20 Sep 2019 20:12:11 GMT Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ECBBDC6059; Fri, 20 Sep 2019 20:12:10 +0000 (GMT) Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 921CFC6055; Fri, 20 Sep 2019 20:12:06 +0000 (GMT) Received: from leobras.br.ibm.com (unknown [9.18.235.184]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 20 Sep 2019 20:12:06 +0000 (GMT) Message-ID: <1f5d9380418ad8bb90c6bbdac34716c650b917a0.camel@linux.ibm.com> Subject: Re: [PATCH v2 00/11] Introduces new count-based method for monitoring lockless pagetable wakls From: Leonardo Bras To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Date: Fri, 20 Sep 2019 17:12:00 -0300 In-Reply-To: <20190920195047.7703-1-leonardo@linux.ibm.com> References: <20190920195047.7703-1-leonardo@linux.ibm.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-nucwkzcjL6z05I66cwMm" User-Agent: Evolution 3.30.5 (3.30.5-1.fc29) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-09-20_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909200165 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Gunthorpe , Thomas Gleixner , Arnd Bergmann , Greg Kroah-Hartman , YueHaibing , Keith Busch , Nicholas Piggin , Mike Rapoport , Mahesh Salgaonkar , Richard Fontana , Paul Mackerras , John Hubbard , "Aneesh Kumar K.V" , Ganesh Goudar , Andrew Morton , Ira Weiny , Dan Williams , Allison Randal Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --=-nucwkzcjL6z05I66cwMm Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable If a process (qemu) with a lot of CPUs (128) try to munmap() a large chunk of memory (496GB) mapped with THP, it takes an average of 275 seconds, which can cause a lot of problems to the load (in qemu case, the guest will lock for this time). Trying to find the source of this bug, I found out most of this time is spent on serialize_against_pte_lookup(). This function will take a lot of time in smp_call_function_many() if there is more than a couple CPUs running the user process. Since it has to happen to all THP mapped, it will take a very long time for large amounts of memory. By the docs, serialize_against_pte_lookup() is needed in order to avoid pmd_t to pte_t casting inside find_current_mm_pte(), or any lockless pagetable walk, to happen concurrently with THP splitting/collapsing. It does so by calling a do_nothing() on each CPU in mm->cpu_bitmap[], after interrupts are re-enabled.=20 Since, interrupts are (usually) disabled during lockless pagetable walk, and serialize_against_pte_lookup will only return after interrupts are enabled, it is protected. So, by what I could understand, if there is no lockless pagetable walk running, there is no need to call serialize_against_pte_lookup(). So, to avoid the cost of running serialize_against_pte_lookup(), I propose a counter that keeps track of how many find_current_mm_pte() are currently running, and if there is none, just skip=20 smp_call_function_many(). The related functions are: start_lockless_pgtbl_walk(mm) Insert before starting any lockless pgtable walk end_lockless_pgtbl_walk(mm) Insert after the end of any lockless pgtable walk (Mostly after the ptep is last used) running_lockless_pgtbl_walk(mm) Returns the number of lockless pgtable walks running On my workload (qemu), I could see munmap's time reduction from 275 seconds to 418ms. > Leonardo Bras (11): > powerpc/mm: Adds counting method to monitor lockless pgtable walks > asm-generic/pgtable: Adds dummy functions to monitor lockless pgtable > walks > mm/gup: Applies counting method to monitor gup_pgd_range > powerpc/mce_power: Applies counting method to monitor lockless pgtbl > walks > powerpc/perf: Applies counting method to monitor lockless pgtbl walks > powerpc/mm/book3s64/hash: Applies counting method to monitor lockless > pgtbl walks > powerpc/kvm/e500: Applies counting method to monitor lockless pgtbl > walks > powerpc/kvm/book3s_hv: Applies counting method to monitor lockless > pgtbl walks > powerpc/kvm/book3s_64: Applies counting method to monitor lockless > pgtbl walks > powerpc/book3s_64: Enables counting method to monitor lockless pgtbl > walk > powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing >=20 > arch/powerpc/include/asm/book3s/64/mmu.h | 3 +++ > arch/powerpc/include/asm/book3s/64/pgtable.h | 5 +++++ > arch/powerpc/kernel/mce_power.c | 13 ++++++++++--- > arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 ++ > arch/powerpc/kvm/book3s_64_mmu_radix.c | 20 ++++++++++++++++++-- > arch/powerpc/kvm/book3s_64_vio_hv.c | 4 ++++ > arch/powerpc/kvm/book3s_hv_nested.c | 8 ++++++++ > arch/powerpc/kvm/book3s_hv_rm_mmu.c | 9 ++++++++- > arch/powerpc/kvm/e500_mmu_host.c | 4 ++++ > arch/powerpc/mm/book3s64/hash_tlb.c | 2 ++ > arch/powerpc/mm/book3s64/hash_utils.c | 7 +++++++ > arch/powerpc/mm/book3s64/mmu_context.c | 1 + > arch/powerpc/mm/book3s64/pgtable.c | 20 +++++++++++++++++++- > arch/powerpc/perf/callchain.c | 5 ++++- > include/asm-generic/pgtable.h | 9 +++++++++ > mm/gup.c | 4 ++++ > 16 files changed, 108 insertions(+), 8 deletions(-) >=20 --=-nucwkzcjL6z05I66cwMm Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEMdeUgIzgjf6YmUyOlQYWtz9SttQFAl2FMpAACgkQlQYWtz9S ttQJDRAAm7UrD3Hn32mqNVvo0il+czdU8CD0TY9JTgwQVy5w623VhAlNK0RSqdbX NN6XebcOau//QQleUrXseAf4kuniMJZn62qDeUj0wcQMaVqSlpqF7+4KDIINVS7K WbymiNSCTGFYDG7575+kcBPn3baKWV6EoGe80qmd5DTXN5W5pBKbfHqJ36u/rEZA cKzVlDLOHxvQ/VopYSydx4wl3T+CcUziVNf3ooT83ktwOHUcGRMfFLsuAMK3Ws5P fLUbK4iWQgda8DH4pvDb9ZtfH/01+lqR7VJSUu9fDbtis5JNRt7TxwglPN3zf1vw eF4p75mlIIxk6KM7/kCksSqn6ZBiHS5ldehaYaKWwsuM4leTP32TYMOB7woOOgDL xW/KNxja+CuFhoIt3dsSDwFWAYwt3cSPsCtgYgiN4t2CkWZQaw+W+6j2wBYg7SPn iGg04qGNDr3Um3OklxU8GHgbkPmBKZ2Yjhxx9mdf0sLoF9//o3td3BrqP8sw4AXK bBnixpOpbVnTvUbK1sc1PyxEJ5qMmmS9kE2I05ysIKHvSPMoDZiXwW92MesXotoi 2Rocc4T0UP0tzTunADdc9iq2d8egHa1r9LjL49sP1FPNYUbYkeEJTjXyIXS07qVe sdQgYcZZ7NwvR0ZASqJCM2yKQBxMQ+Iv3pyUjXFyySlwhS2nSQk= =F3zh -----END PGP SIGNATURE----- --=-nucwkzcjL6z05I66cwMm--