Displaying 2 results from an estimated 2 matches for "plynch".
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lynch
2007 Apr 20
2
Caching of database values
If do something like this:
dbObj = MyTable.find_by_id(5)
a = dbObj.name
b = dbObj.name
How many times will an SQL call be made to get the value of
MyTable.name for id 5? In other words, are the values for dbObj
cached in the object? Is there a way of controlling that? (I can
imagine that sometimes you might not want to cache them if you wanted
to be sure of having the latest
2005 Feb 22
6
VFS: Unable to mount root fs on unknown-block(1,0)
google yields nothing except for indicating that it is a boot loader
problem.
my dom0 partition is on a 9 GB SCSI disk drive. I have a raid1 device
(md0) which I have created a series of partitions via lvm2. on boot,
xm create /etc/xen/xm-single -c
I get what looks like a normal boot until
TCP: Hash tables configured (established 4096 bind 8192)
NET: Registered protocol family 1
NET: