Re: Performance problems with NFS connected DB server ( to NetApp filer)
Roy L Butler <[email protected]> Wed, 06 Jun 2007 10:05:06 -0700
| Newsgroups | gmane.comp.db.maxdb |
|---|---|
| Message-ID | <[email protected]> |
> What do each of these "net*" parameters represent? TIA. > >> We use the following option and decreased our backup time by 30 %: >> >> net.core.rmem_max=8388608 >> net.core.wmem_max=8388608 >> net.core.wmem_default=8388608 >> net.core.rmem_default=8388608 >> net.core.netdev_max_backlog=4096 >> net.ipv4.tcp_rmem = "4096 87380 4194304" >> net.ipv4.tcp_wmem = "4096 87380 4194304" >> net.ipv4.tcp_mem = "4096 87380 4194304" Download the Linux kernel source and look in: ./Documentation/networking/ip-sysctl.txt They're basically increasing the networking stack buffer sizes and backlog in order to improve performance an a high-bandwidth, low-latency network. Roy -- MaxDB Discussion Mailing List For list archives: http://lists.mysql.com/maxdb To unsubscribe: http://lists.mysql.com/[email protected]