Peter Schuller <peter.schuller@infidyne.com> wrote: > > Hello, > > we have just observed a rather annoying behavior one of our servers. > Specifically, when writing data to a file on an ext3fs filesystem at > around 1.5 MB/sec, network connectivity suddently started to show > signs of lag. > > The ping would spike up to ~1 second every 5 seconds or so. This affects > the server in question and all hosts routing traffic through it (i.e., > it's not a userland-only problem). > > When this happens, the load skyrockets (> 10 on an otherwise mostly idle > server) and kjournald can be seen consuming CPU cycles like mad. > Usually, this sort of thing is caused by an IDE subsystem which is not running in DMA mode. You can use `hdparm /dev/hda' to display the current DMA setting. _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
