Our Invoice posting routine (intensive harddrive io) freezes every few seconds to flush the cache. Reading this: https://listman.redhat.com/archives/ext3-users/2002-November/msg00070.html I decided to try: # elvtune -r 2048 -w 131072 /dev/sda # echo "90 500 0 0 600000 600000 95 20 0" >/proc/sys/vm/bdflush # run_post_routine # elvtune -r 128 -w 512 /dev/sda # echo "30 500 0 0 500 3000 60 20 0" >/proc/sys/vm/bdflush # sync I like it, but I think that's way too lax and risky - the whole post routine never wrote to disk until I sync'd! But, is there a setting that would ensure reliable constant i/o so that my post process is pretty much all flushed in real time? Is constantly changing the bdflush parameters before the type of job I'm about to run a bad thing? I noticed that changing back to the "30 500 0 0 500 3000 60 20 0" default doesn't flush to queue, I still had to "sync". -Eric Wood _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
