I've just noticed an odd bit of behaviour with 4.2. I'm using FTP to send a number of large binary files from a windows 2000 machine to a CentOS 4.2 system. Both systems are similarly configured (Athlon64 3200+, 1gig RAM, 80gig system disk, 1.2TB scratch RAID 0 array, gigabit ether to a dumb switch on which they are the only hosts). On the very first file, about 17.5gigs, I got about 30MB/sec. Not spectacular, but reasonably fast. On subsequent files, I only get about 25% of that throughput and vsftpd on the CentOS machine is eating 99.9% of the cpu, which is probably what is killing performance. Both machines are reading or writing to a RAID 0 array of 4 reasonably fast drives so I'm assuming that's not the bottleneck. I've also disabled SElinux and iptables on the Linux machine since the machines are in a non-internet sandbox.
Any suggestions would be greatly appreciated.
Cheers,