Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YRGfP-0004eR-8R for pgsql-general@arkaria.postgresql.org; Fri, 27 Feb 2015 08:53:03 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YRGfO-0007KJ-Jm for pgsql-general@arkaria.postgresql.org; Fri, 27 Feb 2015 08:53:02 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YRGfM-0007Jp-QX for pgsql-general@postgresql.org; Fri, 27 Feb 2015 08:53:01 +0000 Received: from mail-bn1bon0652.outbound.protection.outlook.com ([2a01:111:f400:fc10::1:652] helo=na01-bn1-obe.outbound.protection.outlook.com) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YRGfI-0007P7-5X for pgsql-general@postgresql.org; Fri, 27 Feb 2015 08:52:58 +0000 Received: from decina.attlocal.net (2602:306:ce8b:3460:d9bc:6cff:aa72:ae90) by BY1PR11MB0344.namprd11.prod.outlook.com (25.160.206.16) with Microsoft SMTP Server (TLS) id 15.1.99.14; Fri, 27 Feb 2015 08:52:47 +0000 Message-ID: <54F03052.6050900@BlueTreble.com> Date: Fri, 27 Feb 2015 02:52:34 -0600 From: Jim Nasby User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Sergey Shchukin , Radovan Jablonovsky , Subject: Re: Re: [pgadmin-support] Issue with a hanging apply process on the replica db after vacuum works on primary References: <54EC7FAE.8050003@gmail.com> <54EEBC5B.5000402@gmail.com> In-Reply-To: <54EEBC5B.5000402@gmail.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [2602:306:ce8b:3460:d9bc:6cff:aa72:ae90] X-ClientProxiedBy: BLUPR07CA0037.namprd07.prod.outlook.com (10.255.223.150) To BY1PR11MB0344.namprd11.prod.outlook.com (25.160.206.16) Authentication-Results: postgresql.org; dkim=none (message not signed) header.d=none; X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BY1PR11MB0344; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004)(5005006); SRVR:BY1PR11MB0344; BCL:0; PCL:0; RULEID:; SRVR:BY1PR11MB0344; X-Forefront-PRVS: 05009853EF X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(6009001)(479174004)(51704005)(377454003)(53754006)(24454002)(36756003)(53416004)(15395725005)(65956001)(2950100001)(107886001)(46102003)(77156002)(122386002)(42186005)(33656002)(23676002)(86362001)(47776003)(92566002)(65806001)(87976001)(50986999)(50466002)(15974865002)(59896002)(15975445007)(19580395003)(83506001)(80316001)(19580405001)(54356999)(87266999)(76176999)(3826002)(336755003)(18886065003); DIR:OUT; SFP:1101; SCL:1; SRVR:BY1PR11MB0344; H:decina.attlocal.net; FPR:; SPF:None; MLV:sfv; LANG:en; X-OriginatorOrg: bluetreble.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2015 08:52:47.5164 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR11MB0344 X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-general Precedence: bulk Sender: pgsql-general-owner@postgresql.org On 2/26/15 12:25 AM, Sergey Shchukin wrote: > Hi Radovan ! > > Thank you for the reply. The question is that this table is not a > subject for a massive updates/deletes. > > Is there any additional traces except from perf or pg_top to trace what > replica is doing at the particular moment when we are lagging in replay? > To see locks or spins or sleeps etc.. Please don't top-post. What version is this? What is max_standby_streaming_delay set to? > Thank you! > > - > > Best regards, > Sergey Shchukin > > 24.02.2015 19:05, Radovan Jablonovsky пишет: >> This looks like more issue for pgsql-general mailing list. >> >> Possible solutions >> 1) Set specific autovacuum parameters on the big table. The autovacuum >> could vacuum table on multiple runs based on the thresholds and cost >> settings >> Example of setting specific values of autovacuum and analyze for >> table. It should be adjusted for your system, work load, table usage, etc: >> alter table "my_schema"."my_big_table" set (fillfactor = 80, >> autovacuum_enabled = true, autovacuum_vacuum_threshold = 200, >> autovacuum_analyze_threshold = 400, autovacuum_vacuum_scale_factor = >> 0.05, autovacuum_analyze_scale_factor = 0.005, >> autovacuum_vacuum_cost_delay = 10, autovacuum_vacuum_cost_limit = 5000); >> >> 2) Could be to partition the large table on master site and vacuum it >> partition by partition. >> >> On Tue, Feb 24, 2015 at 6:42 AM, Sergey Shchukin >> > wrote: >> >> Hi all! >> >> May someone help me with the issue in the apply process on the >> replica. We have a stream replication and after vacuum stops >> working with a big table we get a "freeze" in applying data on the >> replica database. It looks like this: >> >> Tue Feb 24 15:04:51 MSK 2015 Stream: >> MASTER-masterdb:79607136410456 SLAVE:79607136410456 >> Replay:79607136339456 :: REPLAY 69 KBytes (00:00:00.294485 seconds) >> Tue Feb 24 15:04:52 MSK 2015 Stream: >> MASTER-masterdb:79607137892672 SLAVE:79607137715392 >> Replay:79607137715392 :: REPLAY 173 KBytes (00:00:00.142605 seconds) >> Tue Feb 24 15:04:53 MSK 2015 Stream: >> MASTER-masterdb:79607139327776 SLAVE:79607139241816 >> Replay:79607139241816 :: REPLAY 84 KBytes (00:00:00.05223 seconds) >> Tue Feb 24 15:04:54 MSK 2015 Stream: >> MASTER-masterdb:79607141134776 SLAVE:79607141073344 >> Replay:79607141080032 :: REPLAY 54 KBytes (00:00:00.010603 seconds) >> Tue Feb 24 15:04:55 MSK 2015 Stream: >> MASTER-masterdb:79607143085176 SLAVE:79607143026440 >> Replay:79607143038040 :: REPLAY 46 KBytes (00:00:00.009506 seconds) >> Tue Feb 24 15:04:56 MSK 2015 Stream: >> MASTER-masterdb:79607145111280 SLAVE:79607145021384 >> Replay:79607145025664 :: REPLAY 83 KBytes (00:00:00.006795 seconds) >> Tue Feb 24 15:04:57 MSK 2015 Stream: >> MASTER-masterdb:79607146564424 SLAVE:79607146478336 >> Replay:79607146501264 :: REPLAY 61 KBytes (00:00:00.00701 seconds) >> Tue Feb 24 15:04:58 MSK 2015 Stream: >> MASTER-masterdb:79607148160680 SLAVE:79607148108352 >> Replay:79607147369320 :: REPLAY 773 KBytes (00:00:00.449702 seconds) >> Tue Feb 24 15:04:59 MSK 2015 Stream: >> MASTER-masterdb:79607150220688 SLAVE:79607150159632 >> Replay:79607150171312 :: REPLAY 48 KBytes (00:00:00.006594 seconds) >> Tue Feb 24 15:05:00 MSK 2015 Stream: >> MASTER-masterdb:79607152365360 SLAVE:79607152262696 >> Replay:79607152285240 :: REPLAY 78 KBytes (00:00:00.007042 seconds) >> Tue Feb 24 15:05:02 MSK 2015 Stream: >> MASTER-masterdb:79607154049848 SLAVE:79607154012624 >> Replay:79607153446800 :: REPLAY 589 KBytes (00:00:00.513637 seconds) >> Tue Feb 24 15:05:03 MSK 2015 Stream: >> MASTER-masterdb:79607155229992 SLAVE:79607155187864 >> Replay:79607155188312 :: REPLAY 41 KBytes (00:00:00.004773 seconds) >> Tue Feb 24 15:05:04 MSK 2015 Stream: >> MASTER-masterdb:79607156833968 SLAVE:79607156764128 >> Replay:79607156785488 :: REPLAY 47 KBytes (00:00:00.006846 seconds) >> Tue Feb 24 15:05:05 MSK 2015 Stream: >> MASTER-masterdb:79607158419848 SLAVE:79607158344856 >> Replay:79607158396352 :: REPLAY 23 KBytes (00:00:00.005228 seconds) >> Tue Feb 24 15:05:06 MSK 2015 Stream: >> MASTER-masterdb:79607160004776 SLAVE:79607159962400 >> Replay:79607159988888 :: REPLAY 16 KBytes (00:00:00.003162 seconds) >> *--here apply process just stops* >> >> Tue Feb 24 15:05:07 MSK 2015 Stream: >> MASTER-masterdb:79607161592048 SLAVE:79607161550576 >> Replay:79607160986064 :: REPLAY 592 KBytes (00:00:00.398376 seconds) >> Tue Feb 24 15:05:08 MSK 2015 Stream: >> MASTER-masterdb:79607163272840 SLAVE:79607163231384 >> Replay:79607160986064 :: REPLAY 2233 KBytes (00:00:01.446759 seconds) >> Tue Feb 24 15:05:09 MSK 2015 Stream: >> MASTER-masterdb:79607164958632 SLAVE:79607164904448 >> Replay:79607160986064 :: REPLAY 3879 KBytes (00:00:02.497181 seconds) >> Tue Feb 24 15:05:10 MSK 2015 Stream: >> MASTER-masterdb:79607166819560 SLAVE:79607166777712 >> Replay:79607160986064 :: REPLAY 5697 KBytes (00:00:03.543107 seconds) >> Tue Feb 24 15:05:11 MSK 2015 Stream: >> MASTER-masterdb:79607168595280 SLAVE:79607168566536 >> Replay:79607160986064 :: REPLAY 7431 KBytes (00:00:04.589736 seconds) >> Tue Feb 24 15:05:12 MSK 2015 Stream: >> MASTER-masterdb:79607170372064 SLAVE:79607170252480 >> Replay:79607160986064 :: REPLAY 9166 KBytes (00:00:05.635918 seconds) >> Tue Feb 24 15:05:13 MSK 2015 Stream: >> MASTER-masterdb:79607171829480 SLAVE:79607171714144 >> Replay:79607160986064 :: REPLAY 10589 KBytes (00:00:06.688115 seconds) >> Tue Feb 24 15:05:14 MSK 2015 Stream: >> MASTER-masterdb:79607173152488 SLAVE:79607173152488 >> Replay:79607160986064 :: REPLAY 11881 KBytes (00:00:07.736993 seconds) >> Tue Feb 24 15:05:15 MSK 2015 Stream: >> MASTER-masterdb:79607174149968 SLAVE:79607174149968 >> Replay:79607160986064 :: REPLAY 12855 KBytes (00:00:08.78538 seconds) >> Tue Feb 24 15:05:16 MSK 2015 Stream: >> MASTER-masterdb:79607176448344 SLAVE:79607176252088 >> Replay:79607160986064 :: REPLAY 15100 KBytes (00:00:09.835184 seconds) >> Tue Feb 24 15:05:17 MSK 2015 Stream: >> MASTER-masterdb:79607177632216 SLAVE:79607177608224 >> Replay:79607160986064 :: REPLAY 16256 KBytes (00:00:10.926493 seconds) >> Tue Feb 24 15:05:18 MSK 2015 Stream: >> MASTER-masterdb:79607179432960 SLAVE:79607179378096 >> Replay:79607160986064 :: REPLAY 18015 KBytes (00:00:11.97989 seconds) >> Tue Feb 24 15:05:19 MSK 2015 Stream: >> MASTER-masterdb:79607180893384 SLAVE:79607180874256 >> Replay:79607160986064 :: REPLAY 19441 KBytes (00:00:13.028921 seconds) >> Tue Feb 24 15:05:20 MSK 2015 Stream: >> MASTER-masterdb:79607182596224 SLAVE:79607182552272 >> Replay:79607160986064 :: REPLAY 21104 KBytes (00:00:14.079497 seconds) >> Tue Feb 24 15:05:21 MSK 2015 Stream: >> MASTER-masterdb:79607183935312 SLAVE:79607183902592 >> Replay:79607160986064 :: REPLAY 22411 KBytes (00:00:15.127679 seconds) >> Tue Feb 24 15:05:23 MSK 2015 Stream: >> MASTER-masterdb:79607185165880 SLAVE:79607185094032 >> Replay:79607160986064 :: REPLAY 23613 KBytes (00:00:16.175132 seconds) >> Tue Feb 24 15:05:24 MSK 2015 Stream: >> MASTER-masterdb:79607187196920 SLAVE:79607187169368 >> Replay:79607160986064 :: REPLAY 25596 KBytes (00:00:17.221981 seconds) >> Tue Feb 24 15:05:25 MSK 2015 Stream: >> MASTER-masterdb:79607188943856 SLAVE:79607188885952 >> Replay:79607160986064 :: REPLAY 27302 KBytes (00:00:18.274362 seconds) >> Tue Feb 24 15:05:26 MSK 2015 Stream: >> MASTER-masterdb:79607190489400 SLAVE:79607190443160 >> Replay:79607160986064 :: REPLAY 28812 KBytes (00:00:19.319987 seconds) >> Tue Feb 24 15:05:27 MSK 2015 Stream: >> MASTER-masterdb:79607192089312 SLAVE:79607192054048 >> Replay:79607160986064 :: REPLAY 30374 KBytes (00:00:20.372305 seconds) >> Tue Feb 24 15:05:28 MSK 2015 Stream: >> MASTER-masterdb:79607193736800 SLAVE:79607193690056 >> Replay:79607160986064 :: REPLAY 31983 KBytes (00:00:21.421359 seconds) >> Tue Feb 24 15:05:29 MSK 2015 Stream: >> MASTER-masterdb:79607195968648 SLAVE:79607195901296 >> Replay:79607160986064 :: REPLAY 34163 KBytes (00:00:22.471334 seconds) >> Tue Feb 24 15:05:30 MSK 2015 Stream: >> MASTER-masterdb:79607197808840 SLAVE:79607197737720 >> Replay:79607160986064 :: REPLAY 35960 KBytes (00:00:23.52269 seconds) >> Tue Feb 24 15:05:31 MSK 2015 Stream: >> MASTER-masterdb:79607199571144 SLAVE:79607199495976 >> Replay:79607160986064 :: REPLAY 37681 KBytes (00:00:24.577615 seconds) >> Tue Feb 24 15:05:32 MSK 2015 Stream: >> MASTER-masterdb:79607201206104 SLAVE:79607201100392 >> Replay:79607160986064 :: REPLAY 39277 KBytes (00:00:25.624604 seconds) >> Tue Feb 24 15:05:33 MSK 2015 Stream: >> MASTER-masterdb:79607203174208 SLAVE:79607203111136 >> Replay:79607160986064 :: REPLAY 41199 KBytes (00:00:26.67059 seconds) >> Tue Feb 24 15:05:34 MSK 2015 Stream: >> MASTER-masterdb:79607204792888 SLAVE:79607204741600 >> Replay:79607160986064 :: REPLAY 42780 KBytes (00:00:27.719088 seconds) >> Tue Feb 24 15:05:35 MSK 2015 Stream: >> MASTER-masterdb:79607206453216 SLAVE:79607206409032 >> Replay:79607160986064 :: REPLAY 44401 KBytes (00:00:28.766647 seconds) >> Tue Feb 24 15:05:36 MSK 2015 Stream: >> MASTER-masterdb:79607208225344 SLAVE:79607208142176 >> Replay:79607160986064 :: REPLAY 46132 KBytes (00:00:29.811434 seconds) >> >> >> perf shows the following functions on the top >> + 22.50% postmaster [kernel.kallsyms] [k] copy_user_generic_string >> + 8.48% postmaster postgres [.] >> hash_search_with_hash_value >> >> >> after 10 minutes or so the apply process continue to work >> >> Tue Feb 24 15:13:25 MSK 2015 Stream: >> MASTER-masterdb:79608758742560 SLAVE:79608758718008 >> Replay:79607160986064 :: REPLAY 1560309 KBytes (00:08:19.009653 >> seconds) >> Tue Feb 24 15:13:26 MSK 2015 Stream: >> MASTER-masterdb:79608759203608 SLAVE:79608759189680 >> Replay:79607160986064 :: REPLAY 1560759 KBytes (00:08:20.057877 >> seconds) >> Tue Feb 24 15:13:27 MSK 2015 Stream: >> MASTER-masterdb:79608759639680 SLAVE:79608759633224 >> Replay:79607160986064 :: REPLAY 1561185 KBytes (00:08:21.104723 >> seconds) >> Tue Feb 24 15:13:28 MSK 2015 Stream: >> MASTER-masterdb:79608760271200 SLAVE:79608760264128 >> Replay:79607160986064 :: REPLAY 1561802 KBytes (00:08:22.148546 >> seconds) >> Tue Feb 24 15:13:30 MSK 2015 Stream: >> MASTER-masterdb:79608760622920 SLAVE:79608760616656 >> Replay:79607160986064 :: REPLAY 1562145 KBytes (00:08:23.196645 >> seconds) >> Tue Feb 24 15:13:31 MSK 2015 Stream: >> MASTER-masterdb:79608761122040 SLAVE:79608761084584 >> Replay:79607160986064 :: REPLAY 1562633 KBytes (00:08:24.240653 >> seconds) >> Tue Feb 24 15:13:32 MSK 2015 Stream: >> MASTER-masterdb:79608761434200 SLAVE:79608761426080 >> Replay:79607160986064 :: REPLAY 1562938 KBytes (00:08:25.289429 >> seconds) >> Tue Feb 24 15:13:33 MSK 2015 Stream: >> MASTER-masterdb:79608761931008 SLAVE:79608761904808 >> Replay:79607160986064 :: REPLAY 1563423 KBytes (00:08:26.338498 >> seconds) >> *--apply starts* >> Tue Feb 24 15:13:34 MSK 2015 Stream: >> MASTER-masterdb:79608762360568 SLAVE:79608762325712 >> Replay:79607163554680 :: REPLAY 1561334 KBytes (00:08:25.702423 >> seconds) >> Tue Feb 24 15:13:35 MSK 2015 Stream: >> MASTER-masterdb:79608762891224 SLAVE:79608762885928 >> Replay:79607166466488 :: REPLAY 1559008 KBytes (00:08:25.011046 >> seconds) >> Tue Feb 24 15:13:36 MSK 2015 Stream: >> MASTER-masterdb:79608763681920 SLAVE:79608763667256 >> Replay:79607167054056 :: REPLAY 1559207 KBytes (00:08:25.827531 >> seconds) >> Tue Feb 24 15:13:37 MSK 2015 Stream: >> MASTER-masterdb:79608764207088 SLAVE:79608764197744 >> Replay:79607175610296 :: REPLAY 1551364 KBytes (00:08:21.182428 >> seconds) >> Tue Feb 24 15:13:38 MSK 2015 Stream: >> MASTER-masterdb:79608764857920 SLAVE:79608764832432 >> Replay:79607183599632 :: REPLAY 1544197 KBytes (00:08:16.742467 >> seconds) >> Tue Feb 24 15:13:39 MSK 2015 Stream: >> MASTER-masterdb:79608765323360 SLAVE:79608765281408 >> Replay:79607186862176 :: REPLAY 1541466 KBytes (00:08:15.569874 >> seconds) >> Tue Feb 24 15:13:40 MSK 2015 Stream: >> MASTER-masterdb:79608765848240 SLAVE:79608765824520 >> Replay:79607186862176 :: REPLAY 1541978 KBytes (00:08:16.620932 >> seconds) >> >> >> All this is a result of completion of "vacuum verbose analyze >> master_table" on the master site >> >> Any help would be appreciated >> >> -- >> Best regards, >> Sergey Shchukin >> >> >> >> >> -- >> >> *Radovan Jablonovsky* | SaaS DBA | Phone 1-403-262-6519 (ext. 7256) | >> Fax 1-403-233-8046 >> >> >> * >> >> *Replicon* | Hassle-Free Time & Expense Management Software - 7,300 >> Customers - 70 Countries >> www.replicon.com | facebook >> | twitter >> | blog | >> contact us >> >> *We are hiring!* | search jobs >> >> >> * > -- Jim Nasby, Data Architect, Blue 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