Обсуждение: PostgreSQL crashing
PostgreSQL runs for a while but always eventually (30min - 2hrs) crashes. I thought it was memory initially but Memtest had no errors after running for a day. I don't think it is a hardware issues because I can run other applications without error. I have ran both version 8.0.3 and 8.1.1 with the same error. I have posted a clipping of the crash from the system log. Any help would be greatly appreciated. Dec 20 17:14:57 server4 kernel: postmaster: page allocation failure. order:0, mode:0xd0 Dec 20 17:14:57 server4 kernel: [<c0143271>] __alloc_pages+0x2e1/0x2f7 Dec 20 17:14:57 server4 kernel: [<c014329f>] __get_free_pages+0x18/0x24 Dec 20 17:14:57 server4 kernel: [<c0145bfc>] kmem_getpages+0x1c/0xbb Dec 20 17:14:57 server4 kernel: [<c014674a>] cache_grow+0xab/0x138 Dec 20 17:14:57 server4 kernel: [<c014693c>] cache_alloc_refill+0x165/0x19d Dec 20 17:14:57 server4 kernel: [<c0146b37>] kmem_cache_alloc+0x51/0x57 Dec 20 17:14:57 server4 kernel: [<c0142019>] mempool_alloc+0xb2/0x135 Dec 20 17:14:57 server4 kernel: [<c011fec9>] autoremove_wake_function+0x0/0x2d Dec 20 17:14:57 server4 kernel: [<c011fec9>] autoremove_wake_function+0x0/0x2d Dec 20 17:14:57 server4 kernel: [<c015de0e>] bio_alloc+0x15/0x168 Dec 20 17:14:57 server4 kernel: [<c026c48f>] sync_page_io+0x25/0xa2 Dec 20 17:14:57 server4 kernel: [<c026d97c>] write_disk_sb+0x5a/0x86 Dec 20 17:15:01 server4 kernel: [<c026d9ca>] sync_sbs+0x22/0x2f Dec 20 17:15:01 server4 kernel: [<c026da5b>] md_update_sb+0x84/0xc6 Dec 20 17:15:01 server4 kernel: [<c02706b5>] md_write_start+0x5e/0x8c Dec 20 17:15:01 server4 kernel: [<f882faf7>] make_request+0x22a/0x2b3 [raid1] Dec 20 17:15:01 server4 kernel: [<c02232e4>] generic_make_request+0x18e/0x19e Dec 20 17:15:01 server4 kernel: [<c02233be>] submit_bio+0xca/0xd2 Dec 20 17:15:01 server4 kernel: [<c0144812>] test_set_page_writeback+0xad/0xe1 Dec 20 17:15:01 server4 kernel: [<c0152ad7>] swap_writepage+0x9a/0xa3 Dec 20 17:15:01 server4 kernel: [<c01487ed>] pageout+0x8d/0xcc Dec 20 17:15:01 server4 kernel: [<c0148a33>] shrink_list+0x207/0x3ed Dec 20 17:15:01 server4 kernel: [<c0147cb4>] __pagevec_release+0x15/0x1d Dec 20 17:15:01 server4 kernel: [<c0148df6>] shrink_cache+0x1dd/0x34d Dec 20 17:15:01 server4 kernel: [<c01494b4>] shrink_zone+0xa7/0xb6 Dec 20 17:15:01 server4 kernel: [<c014950f>] shrink_caches+0x4c/0x57 Dec 20 17:15:01 server4 kernel: [<c0149606>] try_to_free_pages+0xc3/0x1a7 Dec 20 17:15:01 server4 kernel: [<c014318e>] __alloc_pages+0x1fe/0x2f7 Dec 20 17:15:01 server4 kernel: [<c014329f>] __get_free_pages+0x18/0x24 Dec 20 17:15:01 server4 kernel: [<c0145bfc>] kmem_getpages+0x1c/0xbb Dec 20 17:15:01 server4 kernel: [<c014674a>] cache_grow+0xab/0x138 ...
<barai@cs.ucr.edu> wrote > > PostgreSQL runs for a while but always eventually (30min - 2hrs) crashes. > I thought it was memory initially but Memtest had no errors after running > for a day. I don't think it is a hardware issues because I can run other > applications without error. I have ran both version 8.0.3 and 8.1.1 with > the same error. It looks like a kernel bug or maybe a hardware problem to me. Other aplications doesn't crash maybe because they don't exercise this chunk of code that intensively. What's the elog information on postgres side? Regards, Qingqing
barai@cs.ucr.edu wrote: > PostgreSQL runs for a while but always eventually (30min - 2hrs) crashes. > I thought it was memory initially but Memtest had no errors after running > for a day. I don't think it is a hardware issues because I can run other > applications without error. I have ran both version 8.0.3 and 8.1.1 with > the same error. I have posted a clipping of the crash from the system > log. Any help would be greatly appreciated. > > Dec 20 17:14:57 server4 kernel: postmaster: page allocation failure. > order:0, mode:0xd0 > Dec 20 17:14:57 server4 kernel: [<c0143271>] __alloc_pages+0x2e1/0x2f7 > Dec 20 17:14:57 server4 kernel: [<c014329f>] __get_free_pages+0x18/0x24 > Dec 20 17:14:57 server4 kernel: [<c0145bfc>] kmem_getpages+0x1c/0xbb ... > Dec 20 17:15:01 server4 kernel: [<c026d9ca>] sync_sbs+0x22/0x2f > Dec 20 17:15:01 server4 kernel: [<c026da5b>] md_update_sb+0x84/0xc6 > Dec 20 17:15:01 server4 kernel: [<c02706b5>] md_write_start+0x5e/0x8c Hmm - not sure what this is showing, but since the log is all kernel activity and it goes on for four seconds after PostgreSQL errors I'm not sure it's your crash in progress. You probably need to check the mailing-list archives for details on how to make sure you get a core dump. Also people will want to know what version of PG we are looking at, what O.S. (Linux by the look of it, but what distro/version?) and how you installed PG (from source/rpm/etc). -- Richard Huxton Archonet Ltd