Poor SCSI disk preformance

2004-01-06 Thread Derek Marcotte
Hi Everyone, I'm having difficulty getting my SCSI hard disks to preform well. I don't know what tools are available to help me diagnose this issue, or if there are specific tweaks that I need to make. Attached is the output from dmesg. The reason why I say that performance is slow is that wh

Re: Poor SCSI disk preformance

2004-01-06 Thread Derek Marcotte
> I wouldn't say that dd is the greatest benchmarking tool. You may want to > try benchmarks/rawio. I'll check that out just for kicks, but I _actually want_ to write zeros to the drive first, not just as a benchmark. The reasoning for this is that I'm trying to create a dedicated box to format HD

Re: Poor SCSI disk preformance [more on camcontrol please!]

2004-01-06 Thread Derek Marcotte
> Aha. Check the WCE bit to see if your write cache is enabled on the > disk Bingo: # dd if=/dev/zero of=/dev/da0 bs=64k & [1] 2253 # iostat -K -w 1 da0 tty da0 cpu tin tout KB/t tps MB/s us ni sy in id 2 38 0.00 0 0.00 1 0 1 0 98 0 43 64.00 2

SCSI to IDE device bridges

2004-01-07 Thread Derek Marcotte
Hello, I've checked the H/W compatibiltity list for 4.9 for any SCSI to IDE bridges (IDE drive to SCSI bus), and I don't see any mention of these type of devices. I would think that they would be supported though, because they should just appear as HDDs. I plan on at least to try one out, reg

Re[2]: ARP poisonong. LIVE_MAC

2004-02-04 Thread Derek Marcotte
In-Reply-To: <[EMAIL PROTECTED]> You want to deny physical connectivity to the LAN, from a particular host, period. You might try setting up a quasi-switch with bridge (kernel option see LINT), plug a whole bunch of network cards in, and downing the interfaces when they don't pay... It would be a

Yes, a quick routing question...

2003-07-08 Thread Derek Marcotte
It is possible. I have 2 routers. Each has 3 interfaces. If : I plug 2 interfaces on each to the other router, the third interface on each is for the local subnet, a route to the non-local subnet is added to each of the 2 interfaces on each router Subnet A-A===B-Subnet B Will the kernel load b

Kernel load balancing

2003-07-15 Thread Derek Marcotte
Hi, I have posted an ealier question to this effect that could provide more context: (wrapped) http://docs.freebsd.org/cgi/getmsg.cgi?fetch=827757+0+archive/2003/freebsd-questions/20030713.freebsd-questions I would like to know where I can find out if FreeBSD spreads the network load across 2

Re: Kernel load balancing

2003-07-15 Thread Derek Marcotte
> Do you want to do trunking for extra bandwidth, for redundancy in case of > failure...what problem are you trying to solve? Exactly... Both. Ok, so let's make this a little more complex. Here's how I envisioned this working. Subnet A 192.168.0.0/24 Subnet B 192.168.1.0/24 Subnet C 192.168.2.0