Can it be hardware problem with io? Try finding out which file the stuck table is and do a simple fs copy. Or simply do a copy of the whole pg data directory. 15 вер. 2013 04:54, "Craig James" <cja...@emolecules.com> напис.
> On Sat, Sep 14, 2013 at 11:36 AM, bricklen <brick...@gmail.com> wrote: > >> On Sat, Sep 14, 2013 at 11:28 AM, Craig James <cja...@emolecules.com>wrote: >> >>> I'm trying to do a pg_dump of a database, and it more-or-less just sits >>> there doing nothing. >>> >> >> What is running in the db? Perhaps there is something blocking the >> pg_dump? What does the output of the following query look like? >> >> select * from pg_stat_activity where pid <> pg_backend_pid() >> >> > =# select * from pg_stat_activity where pid <> pg_backend_pid(); > datid | datname | pid | usesysid | usename | application_name | > client_addr | client_hostname | client_port | backend_start > | xact_start | query_start | > state_change | waiting | state | > query > > --------+------------+-------+----------+----------+------------------+-------------+-----------------+-------------+------------------------------ > > -+-------------------------------+------------------------------+-------------------------------+---------+--------+------------------------------- > ------------------------------------------------------------------------- > 231308 | emolecules | 13312 | 10 | postgres | pg_dump > | | | -1 | 2013-09-14 > 18:37:08.752938-07 > | 2013-09-14 18:37:08.783782-07 | 2013-09-14 18:39:43.74618-07 | > 2013-09-14 18:39:43.746181-07 | f | active | COPY > orders.chmoogle_thesaurus > (thesaurus_id, version_id, normalized, identifier, typecode) TO stdout; > (1 row) > > And a bit later: > > 231308 | emolecules | 13312 | 10 | postgres | pg_dump > | | | -1 | 2013-09-14 > 18:37:08.752938-07 > | 2013-09-14 18:37:08.783782-07 | 2013-09-14 18:47:38.287109-07 | > 2013-09-14 18:47:38.287111-07 | f | active | COPY > orders.customer_order_items (customer_order_item_id, customer_order_id, > orig_smiles, orig_sdf, orig_datatype, orig_catalog_num, orig_rownum, > cansmiles, version_id, version_smiles, parent_id, match_type, catalogue_id, > supplier_id, sample_id, catalog_num, price_code, reason, discount, > format_ordered, amount_ordered, units_ordered, format_quoted, > amount_quoted, units_quoted, price_quoted, wholesale, nitems_shipped, > nitems_analytical, comment, salt_name, salt_ratio, original_order_id, > price_quoted_usd, wholesale_usd, invoice_price, hazardous) TO stdout; > (1 row) > > The Apache web server is shut off, and I upgraded to Postgres 9.2.4 since > my first email. > > top(1) reports nothing interesting that I can see: > > top - 18:50:18 up 340 days, 3:28, 4 users, load average: 1.46, 1.40, > 1.17 > Tasks: 282 total, 1 running, 281 sleeping, 0 stopped, 0 zombie > Cpu(s): 0.2%us, 0.1%sy, 0.0%ni, 86.9%id, 12.7%wa, 0.0%hi, 0.0%si, > 0.0%st > Mem: 12322340k total, 11465028k used, 857312k free, 53028k buffers > Swap: 19796984k total, 50224k used, 19746760k free, 10724856k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 13311 emi 20 0 28476 8324 1344 S 1 0.1 3:48.90 pg_dump > 13359 emi 20 0 19368 1576 1076 R 0 0.0 0:00.09 top > 1 root 20 0 23840 1372 688 S 0 0.0 0:03.13 init > 2 root 20 0 0 0 0 S 0 0.0 0:00.04 kthreadd > 3 root RT 0 0 0 0 S 0 0.0 0:00.27 migration/0 > 4 root 20 0 0 0 0 S 0 0.0 0:05.85 ksoftirqd/0 > ... etc. > > > Interestingly, it starts off going fairly fast according to "vmstat 2". > This was started almost immediately after pg_dump started. Notice that it > goes well for a couple minutes, slows for a bit, speeds up, then drops to > almost nothing. It stays that way forever, just not doing anything. See > below. > > Thanks, > Craig > > procs -----------memory---------- ---swap-- -----io---- -system-- > ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy > id wa > 1 0 50492 4129584 53672 7455892 0 0 46 37 0 0 0 0 > 99 0 > 1 0 50488 4091536 53672 7494072 0 0 15744 0 389 717 12 0 > 87 0 > 3 0 50480 4053868 53672 7531836 0 0 15680 36 408 759 17 0 > 83 0 > 1 0 50480 4016252 53680 7569636 0 0 15580 6 379 700 12 0 > 87 0 > 2 0 50480 3979140 53680 7606800 0 0 15360 0 372 682 17 0 > 82 0 > 1 1 50480 3943536 53696 7642740 0 0 14720 68846 2076 1343 11 1 > 81 7 > 1 0 50448 3906040 53700 7680044 0 0 15488 2 456 760 18 0 > 80 1 > 1 0 50424 3866036 53704 7720436 0 0 16818 0 389 713 13 1 > 86 0 > 1 0 50424 3813564 53712 7772656 0 0 21952 16 424 772 18 1 > 81 0 > 1 0 50424 3762460 53712 7823840 0 0 21376 0 414 761 13 0 > 87 0 > 1 0 50424 3710416 53720 7875968 0 0 22080 6 420 777 18 0 > 82 0 > 1 0 50424 3660616 53720 7925828 0 0 20672 0 412 777 11 0 > 88 0 > 1 0 50424 3611208 53720 7975484 0 0 20608 0 411 753 17 0 > 83 0 > 1 0 50424 3566916 53728 8019580 0 0 18176 14 406 743 14 0 > 86 0 > 1 0 50424 3514708 53728 8071780 0 0 21760 0 427 791 17 1 > 83 0 > 0 1 50424 3478924 53736 8107700 0 0 15360 6 323 592 9 0 > 87 3 > 0 1 50424 3478636 53736 8108040 0 0 960 0 95 164 2 0 > 81 17 > 2 0 50424 3456340 52604 8130768 0 0 10818 36 365 532 6 0 > 89 5 > 1 0 50424 3413248 52580 8173744 0 0 21504 6 612 814 19 1 > 81 0 > 2 0 50424 3376956 52580 8210000 0 0 18368 0 554 759 15 0 > 85 0 > 2 1 50424 3338208 52600 8249304 0 0 19456 21360 848 800 18 0 > 81 0 > 2 0 50424 3304936 52600 8283196 0 0 16896 31532 1238 759 13 0 > 84 3 > 2 0 50424 3265300 52600 8323020 0 0 19776 0 581 780 18 0 > 82 0 > 3 0 50424 3218968 52608 8369276 0 0 23104 18 633 843 16 1 > 83 0 > 1 0 50424 3177500 52608 8410292 0 0 20544 0 583 761 15 0 > 85 0 > 2 0 50424 3133868 52608 8453808 0 0 21760 22 609 807 16 1 > 83 0 > 1 0 50424 3094220 52608 8493780 0 0 19840 0 576 765 18 1 > 81 0 > 2 0 50424 3054492 52608 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52700 9723072 0 0 20138 0 702 981 15 1 > 78 6 > 1 0 50356 1809516 52716 9776556 0 0 22400 34 619 783 15 0 > 85 0 > 1 0 50348 1755744 52716 9830160 0 0 22208 0 605 774 14 0 > 86 0 > 2 0 50336 1702324 52724 9884184 0 0 22400 6 600 773 16 0 > 84 0 > 1 0 50336 1648008 52732 9938304 0 0 22592 6 623 796 14 1 > 85 0 > 2 0 50336 1592896 52732 9993144 0 0 23424 36 658 861 15 0 > 84 0 > 1 0 50336 1547552 52744 10038416 0 0 19264 66 1045 980 12 0 > 85 3 > 2 0 50336 1490988 52744 10095964 0 0 26116 0 676 732 15 1 > 80 3 > 1 0 50336 1434456 52760 10151276 0 0 26600 32 697 758 13 1 > 86 0 > 1 2 50336 1408144 52768 10177992 0 0 11270 52636 1296 819 13 0 > 82 5 > 1 0 50336 1369920 52768 10216120 0 0 15872 3710 702 681 15 0 > 84 1 > 1 0 50336 1331664 52776 10254604 0 0 16000 18 501 687 16 0 > 84 0 > 1 0 50328 1293004 52776 10293184 0 0 15936 0 504 670 13 0 > 87 0 > 1 0 50268 1254560 52784 10331812 0 0 15936 18 512 680 16 0 > 83 0 > 1 0 50268 1216276 52784 10370156 0 0 15872 0 514 688 14 0 > 86 0 > 1 0 50252 1177600 52784 10408532 0 0 16000 0 502 672 15 0 > 85 0 > 1 0 50244 1138936 52796 10447412 0 0 16072 8 512 680 14 0 > 86 0 > 0 1 50220 1109028 52796 10476884 0 0 12608 18 423 566 11 0 > 85 3 > 0 1 50220 1109912 52804 10476520 0 0 704 10 100 196 1 0 > 84 14 > 0 1 50220 1107952 52800 10478324 0 0 1728 0 127 260 2 0 > 88 10 > 1 0 50220 1088676 52800 10497236 0 0 8832 36 336 513 7 0 > 86 6 > 1 0 50220 1038608 52808 10547152 0 0 20856 146 610 763 15 1 > 84 0 > 1 0 50220 985768 52808 10600160 0 0 22336 0 613 774 13 0 > 86 0 > 1 0 50220 933764 52824 10652336 0 0 21888 28 601 767 16 0 > 84 0 > 1 0 50220 883664 52824 10702216 0 0 20800 0 589 752 14 1 > 86 0 > 0 1 50220 879304 52808 10706896 0 0 3584 44682 928 335 4 0 > 84 12 > 0 2 50220 877780 52816 10707928 0 0 1408 16 110 188 2 0 > 84 14 > 0 1 50220 877156 52816 10709232 0 0 1472 0 112 196 2 0 > 87 11 > 0 1 50220 876540 52804 10710044 0 0 1408 20 119 213 1 0 > 85 14 > 0 1 50220 876104 52812 10710008 0 0 1024 6 117 234 1 0 > 89 10 > 0 1 50220 875736 52812 10710072 0 0 896 0 102 197 1 0 > 84 15 > 0 1 50220 875248 52820 10710856 0 0 1280 8 128 229 2 0 > 85 13 > 2 1 50220 874628 52820 10711556 0 0 1216 0 110 198 2 0 > 88 10 > 1 1 50220 873992 52820 10712288 0 0 1280 0 103 189 3 0 > 83 14 > 0 1 50220 875564 52824 10710784 0 0 384 6 113 207 1 0 > 86 13 > 0 1 50220 875460 52824 10710448 0 0 1216 36 142 263 2 0 > 86 12 > 1 1 50220 873852 52820 10712376 0 0 1856 0 143 255 3 0 > 85 12 > 0 1 50220 873752 52828 10712144 0 0 832 6 112 210 2 0 > 86 12 > 1 1 50220 873336 52832 10712884 0 0 1280 20 112 207 2 0 > 86 12 > 0 1 50220 872588 52840 10713684 0 0 1280 6 119 214 2 0 > 87 11 > 0 1 50220 872276 52840 10713944 0 0 1152 3884 181 184 2 0 > 86 13 > 0 1 50220 871672 52836 10714584 0 0 1088 4 91 169 1 0 > 85 13 > 0 1 50220 871504 52844 10714636 0 0 1088 14 116 200 2 0 > 86 13 > 1 1 50220 871040 52852 10715800 0 0 1280 34 118 217 2 0 > 87 12 > 0 1 50220 870308 52852 10716292 0 0 1088 0 115 204 1 0 > 87 12 > 0 1 50220 869972 52860 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