On Thu, April 22, 2010 23:54, Mark Kirkwood wrote: > Greg Smith wrote: >> Erik Rijkers wrote: >>> This is the same behaviour (i.e. extreme slow standby) that I saw >>> earlier (and which caused the >>> original post, btw). In that earlier instance, the extreme slowness >>> disappeared later, after many >>> hours maybe even days (without bouncing either primary or standby). >>> >> >> Any possibility the standby is built with assertions turned out? >> That's often the cause of this type of difference between pgbench >> results on two systems, which easy to introduce when everyone is >> building from source. You should try this on both systems: >> >> psql -c "show debug_assertions" >> >> >> > Or even: > > pg_config --configure > > on both systems might be worth checking.
(these instances are on a single server, btw) primary: $ pg_config BINDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/bin DOCDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/doc HTMLDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/doc INCLUDEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include PKGINCLUDEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include INCLUDEDIR-SERVER = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include/server LIBDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib PKGLIBDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib LOCALEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/locale MANDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/man SHAREDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share SYSCONFDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/etc PGXS = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib/pgxs/src/makefiles/pgxs.mk CONFIGURE = '--prefix=/var/data1/pg_stuff/pg_installations/pgsql.sr_primary' '--with-pgport=6565' '--enable-depend' '--with-openssl' '--with-perl' '--with-libxml' '--with-libxslt' CC = gcc CPPFLAGS = -D_GNU_SOURCE -I/usr/include/libxml2 CFLAGS = -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fwrapv CFLAGS_SL = -fpic LDFLAGS = -Wl,-rpath,'/var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib' LDFLAGS_SL = LIBS = -lpgport -lxslt -lxml2 -lssl -lcrypto -lz -lreadline -ltermcap -lcrypt -ldl -lm VERSION = PostgreSQL 9.0devel-sr_primary [data:port:db PGPORT=6565 PGDATA=/var/data1/pg_stuff/pg_installations/pgsql.sr_primary/data PGDATABASE=replicas] 2010.04.22 20:55:28 rijk...@denkraam:~/src/perl/85devel [0] $ time ./run_test_suite.sh [data:port:db PGPORT=6565 PGDATA=/var/data1/pg_stuff/pg_installations/pgsql.sr_primary/data PGDATABASE=replicas] 2010.04.22 21:00:26 rijk...@denkraam:~/src/perl/85devel [1] standby: $ pg_config BINDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/bin DOCDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/doc HTMLDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/doc INCLUDEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include PKGINCLUDEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include INCLUDEDIR-SERVER = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/include/server LIBDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib PKGLIBDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib LOCALEDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/locale MANDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share/man SHAREDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/share SYSCONFDIR = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/etc PGXS = /var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib/pgxs/src/makefiles/pgxs.mk CONFIGURE = '--prefix=/var/data1/pg_stuff/pg_installations/pgsql.sr_primary' '--with-pgport=6565' '--enable-depend' '--with-openssl' '--with-perl' '--with-libxml' '--with-libxslt' CC = gcc CPPFLAGS = -D_GNU_SOURCE -I/usr/include/libxml2 CFLAGS = -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fwrapv CFLAGS_SL = -fpic LDFLAGS = -Wl,-rpath,'/var/data1/pg_stuff/pg_installations/pgsql.sr_primary/lib' LDFLAGS_SL = LIBS = -lpgport -lxslt -lxml2 -lssl -lcrypto -lz -lreadline -ltermcap -lcrypt -ldl -lm VERSION = PostgreSQL 9.0devel-sr_primary $ grep -Ev '(^[[:space:]]*#)|(^$)' pgsql.sr_*ry/data/postgresql.conf pgsql.sr_primary/data/postgresql.conf:data_directory = '/var/data1/pg_stuff/pg_installations/pgsql.sr_primary/data' pgsql.sr_primary/data/postgresql.conf:port = 6565 pgsql.sr_primary/data/postgresql.conf:max_connections = 100 pgsql.sr_primary/data/postgresql.conf:shared_buffers = 256MB pgsql.sr_primary/data/postgresql.conf:checkpoint_segments = 50 pgsql.sr_primary/data/postgresql.conf:archive_mode = 'on' pgsql.sr_primary/data/postgresql.conf:archive_command= 'cp %p /var/data1/pg_stuff/dump/replication_archive/%f' pgsql.sr_primary/data/postgresql.conf:max_wal_senders = 5 pgsql.sr_primary/data/postgresql.conf:effective_cache_size= 16GB pgsql.sr_primary/data/postgresql.conf:datestyle = 'iso, mdy' pgsql.sr_primary/data/postgresql.conf:lc_messages = 'en_US.UTF-8' pgsql.sr_primary/data/postgresql.conf:lc_monetary = 'en_US.UTF-8' pgsql.sr_primary/data/postgresql.conf:lc_numeric = 'en_US.UTF-8' pgsql.sr_primary/data/postgresql.conf:lc_time = 'en_US.UTF-8' pgsql.sr_primary/data/postgresql.conf:default_text_search_config = 'pg_catalog.english' pgsql.sr_slavery/data/postgresql.conf:data_directory = '/var/data1/pg_stuff/pg_installations/pgsql.sr_slavery/data' pgsql.sr_slavery/data/postgresql.conf:port = 6566 pgsql.sr_slavery/data/postgresql.conf:max_connections = 100 pgsql.sr_slavery/data/postgresql.conf:shared_buffers = 256MB pgsql.sr_slavery/data/postgresql.conf:checkpoint_segments = 50 pgsql.sr_slavery/data/postgresql.conf:archive_mode = 'on' pgsql.sr_slavery/data/postgresql.conf:archive_command= 'cp %p /var/data1/pg_stuff/dump/replication_archive/%f' pgsql.sr_slavery/data/postgresql.conf:max_wal_senders = 5 pgsql.sr_slavery/data/postgresql.conf:effective_cache_size= 16GB pgsql.sr_slavery/data/postgresql.conf:datestyle = 'iso, mdy' pgsql.sr_slavery/data/postgresql.conf:lc_messages = 'en_US.UTF-8' pgsql.sr_slavery/data/postgresql.conf:lc_monetary = 'en_US.UTF-8' pgsql.sr_slavery/data/postgresql.conf:lc_numeric = 'en_US.UTF-8' pgsql.sr_slavery/data/postgresql.conf:lc_time = 'en_US.UTF-8' pgsql.sr_slavery/data/postgresql.conf:default_text_search_config = 'pg_catalog.english' I only now notice archive_mode = 'on' on the standby. That doesn't make sense of course - I'll remove that. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
