Just recently I have been trying to get SMP + Hyper-Threading enabled on our 2650, this has caused me no end of grief. I have finally managed to get a working (and stable!) kernel compiled. The version I am using is 2.4.22 from the vanila-sources, which is the same as 2.4.22 downloaded from kernel.org (or a mirror)

The .config file for my working kernel is here, although the important bits are:

• CONFIG_SMP=y
• CONFIG_ACPI=y
• CONFIG_ACPI_HT_ONLY=y
• CONFIG_RTC=y

When this is booted with the extra command line arguments acpi=ht HT works. Now i wonder if HT actually makes that much difference!

Toby (Broken link http://www.bryans.org/toby/) has sent over a nice page over at IBM about Hyper Threading in Linux

I’ve had a problem with a gentoo machine not being able to find /dev/sdaX during the fsck portion of the boot process, after much arsing around I’ve tracked it down and fixed it. Details can be found here

Found this (Broken link http://www.jedi.claranet.fr/reiserfs-tuning.html) page while searching for reiserfs info. looks interesting.

just because i can never remember them

• 5 is reboot
• 6 is power-off

Rather than using the qmail-queue patch and qmail-scanner to get Spam Assassin working with qmail this (Broken link http://bluesine.com/view?p=debian_qmail) page suggests replacing qmail-queue with a simple sh script.

Seems to work on our internal work server, but of course you would need to put qmail-scanner in to check for viri.

This is quite a nice web config generator for Spam Assassin.

Ben Trott from MoveableType has written a usefull how-to on installing the assassin on osX.

If you need to increase shmmax or a similar parameter in the Darwin (Os X) kernel edit the file:

/System/Library/StartupItems/SystemTuning/SystemTuning

You are looking for lines like:

sysctl -w kern.sysv.shmmax=4194304
    sysctl -w kern.sysv.shmmin=1
    sysctl -w kern.sysv.shmmni=32
    sysctl -w kern.sysv.shmseg=8
    sysctl -w kern.sysv.shmall=1024

Found a really usefull site with a huge database of internet ports.

Also has a cool dns interface:

robin@trillian robin $ nslookup -q=txt 80.tcp.portsdb.org
Server:  junction.internal.image-data.com
Address:  192.168.1.102

Non-authoritative answer:
80.tcp.portsdb.org      text = "http"
80.tcp.portsdb.org      text = "Nimda"
80.tcp.portsdb.org      text = "www-http"
80.tcp.portsdb.org      text = "www"
robin@trillian robin $

Thanks to toby for the dig alternative:

robin@trillian robin $ dig -t txt 80.tcp.portsdb.org

; <> DiG 8.3 <> -t 80.tcp.portsdb.org
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUERY SECTION:
;;      80.tcp.portsdb.org, type = TXT, class = IN

;; ANSWER SECTION:
80.tcp.portsdb.org.     3h54m53s IN TXT  "http"
80.tcp.portsdb.org.     3h54m53s IN TXT  "Nimda"
80.tcp.portsdb.org.     3h54m53s IN TXT  "www-http"
80.tcp.portsdb.org.     3h54m53s IN TXT  "www"

;; Total query time: 117 msec
;; FROM: trillian to SERVER: default -- 192.168.1.102
;; WHEN: Mon Jul  7 11:43:43 2003
;; MSG SIZE  sent: 36  rcvd: 108

robin@trillian robin $

How do I export my KEY file from Apache for use with Microsofts IIS?

The following command will convert your Apache Key file to one that Microsoft IIS can recognise:

openssl rsa -in ApacheKeyFileName.key -out IISKeyFileName.key -outform NET