[GENERAL] Re: [GENERAL] Re: [GENERAL] Fwd: Help！Why CPU Usage and LoadAverage Jump up Suddenly
Is khugepaged running during the stalls? http://www.postgresql.org/message-id/20130716195834.8fe5c79249cb2ff0d4270...@yahoo.es Matt On Thu, Dec 5, 2013 at 7:44 AM, Scott Marlowe scott.marl...@gmail.com wrote: On Thu, Dec 5, 2013 at 1:46 AM, 吕晓旭 lxxstc...@gmail.com wrote: Hi, all We find so weird problem on our productive PostgreSQL system. And I don't know how could I do to resolve this problem. We deployed PostgreSQL 9.2.4 on two system environments, and the performances between them are absolutely different. one of them it's perfect, and the other one lets me down, CPU Usage and LoadAverage Jumped up Suddenly when concurrency smoothly rising up, simultaneously, average response time become unacceptable. Anyone, who could give me some advice? The parameters of system environment and PotgreSQL listed below: Have you tried monitoring your IO subsystem when this happens? I'd be interested in iostat, vmstat, iotop, and so on to see what the IO looks like. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] Differences in Unicode handling on Mac vs Linux?
Howdy, I loaded a client's DB on my Mac to debug an unrelated bug, but I'm blocked because my Mac is rejecting SQL that works on our Linux production servers. Here's a simple case: # select * from shots where sg_poznÁmka is NULL; ERROR: column sg_pozn�mka does not exist LINE 1: select * from shots where sg_poznÁmka is NULL; ... as far as I can tell, all my encodings are consistent on both sides, I've checked LC_COLLATE, LC_CTYPE, client_encoding, server_encoding and the database encodings. I'm running 9.0.13 on both machines (and I tried 9.2.4 on my Mac). Anything else I could double-check? Or are there any known Mac-related Unicode issues? Thanks! Matt -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Differences in Unicode handling on Mac vs Linux?
Hm ... what does \d shots say about the spelling of the column name? \d shots is the same on both systems: sg_poznÁmka | text | OS X's Unicode locales are pretty crummy. I'm suspicious that there's some sort of case-folding inconsistency here, but it's hard to say more (especially since you didn't actually tell us *which* locales you've selected on each machine). If it is that, as a short-term fix it might help to double-quote the column name. The locales are set to en_US.UTF-8 and encodings to UTF8. Double quoting does solve the column case, but it's not helping with the Rails generated: SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE a.attrelid = 'asset_sg_kdo_děláassigned_to__connections'::regclass AND a.attnum 0 AND NOT a.attisdropped ORDER BY a.attnum ... that produces: ERROR: relation asset_sg_kdo_d�l�assigned_to__connections does not exist \d produces: public | asset_sg_kdo_děláassigned_to__connections | table| matt For the short term, I think I'll boot up a Linux VM to troubleshoot my production bug... but I'll submit a bug report with repro steps. Thanks Tom! Matt -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
