Reiser4/Alpha
Has anyone else been using Reiser4 with Alpha?
I've been using it for a while, but only just realized that it generated tons
of alignment fixups - during intense operation, it can be hundreds of
thousands per second.
I was wondering why kernel compiles were so slow - they would basically lock
my machine up. At first I thought it was an ide thing - until recently I had
only been using scsi drives.
Has anyone else seen this? So, far I have managed to find and kill a few of
them - just wan't sure if anyone else had seen this.
In most cases it has been caused by bit-arrays allocated with an unaligned
base and then accesses 8bytes at a time = always unaligned (ouch!)
I did a large file copy and afterwards I had added 4billion kernel alignment
fixups. :-) (took about 40minuted for the file copy - ~20GB - I knew it
should've gone faster than that).
...tom
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