dcsimg
Linux Today: Linux News On Internet Time.





More on LinuxToday


LinuxWorld.com: The kernel of pain (For large servers, the 2.4 kernel has been a disaster)

Jan 16, 2002, 16:46 (70 Talkback[s])
(Other stories by Joshua Drake)

WEBINAR:
On-Demand

Re-Imagining Linux Platforms to Meet the Needs of Cloud Service Providers


"As I reviewed the archives of late December, I found that the per-user limit support in the 2.4 series kernels is broken. With the limit support broken, any user -- privileged or not -- has the potential to suck up all of the machines resources, effectively causing an intramural DoS (Denial of Service) attack. They could do this accidentally, and it would cause a great deal of grief for any system administrator.

So, what does all of this mean for me? It means that after five months of battling the new, better-than-fresh-butter, enterprise-ready 2.4 kernel, I am moving my customer back to the stodgy, conservative, more-enterprise-ready-than-2.4-has-been-since-its-release-almost-a-year-ago, 2.2 kernel-based Red Hat 6.2.

The 2.2 kernels may not handle large SMP machines as well, they may not handle large amounts of memory well (only 2 gigabytes), and they may have a practical limit of 2 gigabytes on a single file, but the 2.2. kernels don't crash or cause phone calls at 5:00 AM. Moreover, the 2.2 kernels don't make customers unhappy that they chose Linux as their server solution."

Complete Story

Related Stories: