The HyperNews Linux KHG Discussion Pages

## Increasing number of files in system

  Forum: The Linux Kernel Hackers' Guide
  Re: Tunable Kernel Parameters?
  Keywords: kernel tuning, file handles, Bus error
  Date: Sat, 25 Oct 1997 11:19:38 GMT
  From: Simon Cooper <simon.cooper@snc-net.demon.co.uk>

Increasing number of open file handles in kernel. I have successfully increased the number of files on my system (Linux 2.0.30) by editing the following file: /usr/src/linux/include/linux/fs.h I increased NR_OPEN to 1024, NB. Don't make it any higher than this as it will break other code in the kernel and your new kernel wont boot ! I also increased NR_INODE to 5000, and NR_FILE to 4096. I then rebuilt the Kernel (and modules for good measure) and installed the new image. Note: Its always a good idea to have your original Kernel image available. I installed a boot block in my MBR using lilo, and added an entry for my original kernel I named vmlinux.safe. For my root system on /dev/hda2 I added the following lines to my existing /etc/lilo.conf image=/vmlinux.safe image=linuxS root=/dev/hda2

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1. Increasing number of open files parameter by Simon Cooper