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I managed to resolve a couple of issues with tuning the debian ip network stack today.

ip_conntrack_tcp_timeout_established – I have been setting this value to 86400 (1 day in seconds) instead of the default 432000 (5 days in seconds) via sysctl.conf. The problem is that debian loads the sysctl.conf values before the network is loaded [...]

Well, we’ve tried phpgroupware, vtiger, and request-tracker and we’re still looking for that solution that really benefits us as a small company trying to coordinate tasks, contacts. projects, and resources but is open source and freely available.

So after disabling acpi on an athlon 64 x2 / nforce 4 system by passing acpi=off to the kernel at boot time in order to improve system stability I got hit with a clock running too fast issue (gaining about 400 seconds every hour). Apparently this has to do with the tsc timer. [...]

Seems that machines running initramfs-tools will hang on boot while any degraded array is being rebuilt. What should happen of course is that the machine should boot and the array should be synced in the background. While this isn’t as bad as the yaird error it’s still far from ideal and is a [...]

Luckily we found this out in a non-production environment with a non-critical situation. It was simply during a relocation of a drive in a RAID 1 array to a different channel that we learned that YAIRD will fail to boot on a system with a degraded RAID 1 array. That is simply unacceptable [...]

Using the mainline Bittorrent client (4.4.0) I was disappointed that while it supports a max_update_rate and max_uploads there is no corresponding max_download_rate and max_downloads. On a whim I checked Brian’s BitTorrent FAQ and Guide and came across the program trickle which I had apparently missed when searching the debian repositories. But there is [...]

I wanted to get ferret running for a ruby on rails project. It had a few dependencies that were needed to get it working with cferret (the fast c port of parts of lucene).