Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
/ 2004-07-23 10:54:18 +0200 \ Thomas Dingermann: > I am using drbd-0.7 with ext3-Filesystem (data=journal). Samba, NFS and > Sybase SQL-Anywhere are running fine and fast. There are no lost > (commited) Transactions of Sybase SQL when resetting the primary node. > > I have a performance problem with DRBD and Informix Dynamic Server 9.40. > > Informix Server opens its database files with O_SYNC in case of normal > files, so writes a very slow. Is it possible to use /dev/nbX as > RAW-Device? Then Informix will open without O_SYNC. of course, if every submitted bio is waited for first, then the increased latency will hit performance very hard... but are you sure it is DRBD? I mean what do the figures look like without drbd, with unconnected drbd, and with connected drbd? > Or is ist possible to prevent O_SYNC without touching Informix-Server? no. Lars Ellenberg -- please use the "List-Reply" function of your email client.