|Evolution||davidfetter: 2 questions. since rhel5/centos5 ships with postgresql, and is still beta, why do I care?|
well, really.. just that one question...
jsoftw: really it depends more on the disk controller (drivers) than most other things.
what controller are you using out of curiosity?
|jsoftw||Evolution: I forget the model. Its a 4 disk SCSI raid, 256mb, raid 1+5|
it is very very fast when you just copy one file
|jsoftw||but like on any other machine running linux ( that I have been in ) it starts getting very slow when more than one disk thing is going on at one time )|
redundancy and larger capacity
|Evolution||jsoftw: 1+0 would give you that.|
and be faster.
1+5 seems to have the belt and a set of parity suspenders.
I used to have some I/O issues also, then I learned about ext3 stride, and fixed my filesystem, enabled dir_index, and changed my elevator
system flies now after that.
some minor tuning was also required in /etc/sysctl.conf, but those were application specific
|jsoftw||Yeah. The disks can write at around 50 - 60 mb per second continuous|
Its not slow in that department
What is slow is something to dow ith the filesystem
So yep, Gotta sort that out.
|Evolution||yeah. it's when you do reads while writing that it bogs down.|
that's where data=writeback and a different elevator option can help (on ext3)
|jsoftw||I might try that.|
|davidfetter||Evolution, sorry. on phone w/friend who's about to go into surgery|
|jsoftw||Evolution: seems to be less reliable in the event of a crash though|
|Evolution||a little, but that's why ext3 is a little slower there than other filesystems.|
writeback makes it behave like xfs.
|jsoftw||Is there a way to disable atime ( like mounting with noatime flag ) on an already mounted filesystem?|
|Evolution||read up on the bind option in mount's manpage.|
(yes, there is a way)
|davidfetter||Evolution, anyhow, i'm looking at pg 8.2, which i need for a client|
so i figured i'd start with the PGDG SRPMs
Evolution, any ideas about why it's complaining about this thread safety business?
|Evolution||davidfetter: have you looked in config.log like it says?|
personally right now I could care less about non-centos apps on the beta. I'd rather get centos5 stable and released.
|davidfetter||yep. should i paste it somewhere? i can't make heads or tails of it|
hrm. sorry to trouble you, then. anybody else?
|Edgan||Evolution: any way to view the stride of a filesystem?|
|seekwill||If I have 2GB of RAM, is there any reason to use the 64bit version?|
|Edgan||seekwill: more registers|