From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benoit Lourdelet Subject: Re: [RFC][PATCH] iproute: Faster ip link add, set and delete Date: Sat, 30 Mar 2013 16:07:15 +0000 Message-ID: References: <1364654674.5113.87.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: "Eric W. Biederman" , Stephen Hemminger , Serge Hallyn , "netdev@vger.kernel.org" To: Eric Dumazet Return-path: Received: from exprod7og108.obsmtp.com ([64.18.2.169]:41027 "EHLO exprod7og108.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756768Ab3C3QJ0 convert rfc822-to-8bit (ORCPT ); Sat, 30 Mar 2013 12:09:26 -0400 Received: from mail13-db3 (localhost [127.0.0.1]) by mail13-db3-R.bigfish.com (Postfix) with ESMTP id 8C2613002F4 for ; Sat, 30 Mar 2013 16:07:20 +0000 (UTC) In-Reply-To: <1364654674.5113.87.camel@edumazet-glaptop> Content-Language: en-US Content-ID: Sender: netdev-owner@vger.kernel.org List-ID: Sorry Eric, This is not an lxc-start perf report.This is an "ip" report". Will run an "lxc-start" perf ASAP. Regards Benoit On 30/03/2013 15:44, "Eric Dumazet" wrote: >On Sat, 2013-03-30 at 10:09 +0000, Benoit Lourdelet wrote: >> Hello, >> >> Here are my tests of the last patches on 3 different platforms all >> running 3.8.5 : >> >> Time are in seconds : >> >> 8x 3.7Ghz virtual cores >> >> # veth create delete >> 1000 14 18 >> 2000 39 56 >> 5000 256 161 >> 10000 1200 399 >> >> >> 8x 3.2Ghz virtual cores >> >> # veth create delete >> >> 1000 19 40 >> 2000 118 66 >> 5000 305 251 >> >> >> >> 32x 2Ghz virtual cores , 2 sockets >> # veth create delete >> 1000 35 86 >> >> 2000 120 90 >> >> 5000 724 245 >> >> >> Compared to initial iproute2 performance on this 32 virtual core >>system : >> 5000 1143 1185 >> >> >> >> "perf record" for creation of 5000 veth on the 32 core system : >> >> # captured on: Fri Mar 29 14:03:35 2013 >> # hostname : ieng-serv06 >> # os release : 3.8.5 >> # perf version : 3.8.5 >> # arch : x86_64 >> # nrcpus online : 32 >> # nrcpus avail : 32 >> # cpudesc : Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz >> # cpuid : GenuineIntel,6,45,7 >> # total memory : 264124548 kB >> # cmdline : /usr/src/linux-3.8.5/tools/perf/perf record -a >>./test3.script >> # event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 >>= >> 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, >> precise_ip = 0, id = { 36, 37, 38, 39, 40, 41, 42, >> # HEADER_CPU_TOPOLOGY info available, use -I to display >> # HEADER_NUMA_TOPOLOGY info available, use -I to display >> # pmu mappings: cpu = 4, software = 1, uncore_pcu = 15, tracepoint = 2, >> uncore_imc_0 = 17, uncore_imc_1 = 18, uncore_imc_2 = 19, uncore_imc_3 = >> 20, uncore_qpi_0 = 21, uncore_qpi_1 = 22, unco >> # ======== >> # >> # Samples: 9M of event 'cycles' >> # Event count (approx.): 2894480238483 >> # >> # Overhead Command Shared Object >> Symbol >> # ........ ............... ............................. >> ............................................... >> # >> 15.17% sudo [kernel.kallsyms] [k] >> snmp_fold_field >> 5.94% sudo libc-2.15.so [.] >> 0x00000000000802cd >> 5.64% sudo [kernel.kallsyms] [k] >> find_next_bit >> 3.21% init libnih.so.1.0.0 [.] >> nih_list_add_after >> 2.12% swapper [kernel.kallsyms] [k] >>intel_idle >> >> 1.94% init [kernel.kallsyms] [k] >>page_fault >> >> 1.93% sed libc-2.15.so [.] >> 0x00000000000a1368 >> 1.93% sudo [kernel.kallsyms] [k] >> rtnl_fill_ifinfo >> 1.92% sudo [veth] [k] >> veth_get_stats64 >> 1.78% sudo [kernel.kallsyms] [k] memcpy >> >> 1.53% ifquery libc-2.15.so [.] >> 0x000000000007f52b >> 1.24% init libc-2.15.so [.] >> 0x000000000008918f >> 1.05% sudo [kernel.kallsyms] [k] >> inet6_fill_ifla6_attrs >> 0.98% init [kernel.kallsyms] [k] >> copy_pte_range >> 0.88% irqbalance libc-2.15.so [.] >> 0x00000000000802cd >> 0.85% sudo [kernel.kallsyms] [k] memset >> >> 0.72% sed ld-2.15.so [.] >> 0x000000000000a226 >> 0.68% ifquery ld-2.15.so [.] >> 0x00000000000165a0 >> 0.64% init libnih.so.1.0.0 [.] >> nih_tree_next_post_full >> 0.61% bridge-network- libc-2.15.so [.] >> 0x0000000000131e2a >> 0.59% init [kernel.kallsyms] [k] >>do_wp_page >> >> 0.59% ifquery [kernel.kallsyms] [k] >>page_fault >> >> 0.54% sed [kernel.kallsyms] [k] >>page_fault >> >> >> >> >> >> Regards >> >> Benoit >> >> >> >> > >This means lxc-start does the same thing than ip : > >It fetches the whole device list. > >You could strace it to have a confirmation. > > > > >