Re: [PERFORM] Importing from pg_dump slow, low Disk IO

2005-06-10 Thread Martin Fandel
Hi, i'm trying this too :). My Dump (IN) is about 84 minutes. Now i'm testing how much time takes it with open_sync :). I'm anxious about the new results :). best regards, pingufreak Am Freitag, den 10.06.2005, 15:33 +0930 schrieb Steve Pollard: Hi All, Not sure if this is correct fix or

Re: [PERFORM] Importing from pg_dump slow, low Disk IO

2005-06-10 Thread Martin Fandel
Hmmm. In my configuration there are not much more performance: The Dump-size is 6-7GB on a PIV-3Ghz, 2GB-RAM, 4x10k disks on raid 10 for the db and 2x10k disks raid 1 for the system and the wal-logs. open_sync: real79m1.980s user25m25.285s sys 1m20.112s fsync: real75m23.792s

Re: [PERFORM] Filesystem

2005-06-08 Thread Martin Fandel
(including connections establishing). I'm using Suse Linux 9.3. I can't see better performance with xfs. :/ Must I enable special fstab-settings? Best regards, Martin Am Freitag, den 03.06.2005, 10:18 -0700 schrieb J. Andrew Rogers: On Fri, 3 Jun 2005 09:06:41 +0200 Martin Fandel [EMAIL

Re: [PERFORM] Filesystem

2005-06-08 Thread Martin Fandel
Hi, ah you're right. :) I forgot to symlink the pg_xlog-dir to another partition. Now it's a bit faster than before. But not faster than the same installation with reiserfs: [EMAIL PROTECTED]:~ pgbench -h 127.0.0.1 -p 5432 -c150 -t5 pgbench starting vacuum...end. transaction type: TPC-B (sort

[PERFORM] Filesystem

2005-06-03 Thread Martin Fandel
Hi @ all, i have only a little question. Which filesystem is preferred for postgresql? I'm plan to use xfs (before i used reiserfs). The reason is the xfs_freeze Tool to make filesystem-snapshots. Is the performance better than reiserfs, is it reliable? best regards, Martin

Re: SHMMAX / SHMALL Was (Re: [PERFORM] postgresql-8.0.1 performance tuning)

2005-06-03 Thread Martin Fandel
Aah ok :) I've set my values now as follow (2GB RAM): SHMMAX=`cat /proc/meminfo | grep MemTotal | cut -d: -f 2 | awk '{print $1*1024/3}'` echo kernel.shmmax=${SHMMAX} /etc/sysctl.conf SHMALL=`expr ${SHMALL} / 4096 \* \( 4096 / 16 \)` echo kernel.shmall=${SHMALL} /etc/sysctl.conf sysctl.conf:

Re: SHMMAX / SHMALL Was (Re: [PERFORM] postgresql-8.0.1 performance tuning)

2005-06-03 Thread Martin Fandel
ok i set it to 524288. ;) Am Freitag, den 03.06.2005, 21:10 +1200 schrieb Mark Kirkwood: Martin Fandel wrote: Aah ok :) I've set my values now as follow (2GB RAM): SHMMAX=`cat /proc/meminfo | grep MemTotal | cut -d: -f 2 | awk '{print $1*1024/3}'` echo kernel.shmmax=${SHMMAX

Re: [PERFORM] Filesystem

2005-06-03 Thread Martin Fandel
that problem (that partition is not on a DB server though). Alex Turner netEconomist On 6/3/05, Martin Fandel [EMAIL PROTECTED] wrote: Hi @ all, i have only a little question. Which filesystem is preferred for postgresql? I'm plan to use xfs (before i

Re: [PERFORM] postgresql-8.0.1 performance tuning

2005-06-02 Thread Martin Fandel
Hi, hmmm i don't understand which are the best values for shmmax and shmall. I've googled around but every site says something different. I've 2GB of RAM now and set it to: kernel.shmmax=715827882 kernel.shmall=2097152 Is that value ok for 2GB of RAM? I've set the shared_buffers in my

Re: [PERFORM] postgresql-8.0.1 performance tuning

2005-06-02 Thread Martin Fandel
Mhz RAM CL2.5 pg_xlog is on sda (raid1 with two 10k discs) and the database on sdb(raid10 with four 10k discs). My Linux distribution is Suse Linux 9.3 with postgresql 8.0.1. best regards, Martin Am Donnerstag, den 02.06.2005, 14:50 +0200 schrieb Martin Fandel: Hi, hmmm i don't understand

Re: [PERFORM] postgresql-8.0.1 performance tuning

2005-06-02 Thread Martin Fandel
I've forgotten the settings for the pgbench-tests. I use 150 clients with 5 transactions each. Am Donnerstag, den 02.06.2005, 15:10 +0200 schrieb Martin Fandel: Ups, i'm sorry. i've set the following values: postgresql.conf: shared_buffers = 7 effective_cache_size

Re: [PERFORM] postgresql-8.0.1 performance tuning

2005-06-01 Thread Martin Fandel
and will write a feedback after testing. :) Thanks a lot. I'm very confusing to tuning the postgresql-db. #:-) best regards Martin Am Dienstag, den 31.05.2005, 13:46 -0500 schrieb John A Meinel: Martin Fandel wrote: Hi @ all, i'm trying to tune my postgresql-db but i don't know

Re: [PERFORM] postgresql-8.0.1 performance tuning

2005-06-01 Thread Martin Fandel
Yes, i think also that this setting should be enabled :). Am Mittwoch, den 01.06.2005, 11:57 +0200 schrieb Steinar H. Gunderson: On Wed, Jun 01, 2005 at 07:30:37AM +0200, Cosimo Streppone wrote: fsync = true false Just setting fsync=false without considering the

[PERFORM] postgresql-8.0.1 performance tuning

2005-05-27 Thread Martin Fandel
ived) wals and the database of my hotstandby was consistent. Is this solution recommended? Or must i use archived wal's with real system-snapshots? best regards, Martin Fandel