Messages in this thread | | | Date | Tue, 1 Jun 1999 00:14:05 +0200 | From | "M.Brands" <> | Subject | Re: Simultaneous network/IDE traffic = reboot |
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On Mon, May 31, 1999 at 09:10:54PM +0200, Roland Olsson allegedly wrote: > Hi, > > I have stumbled upon a _big_ problem with my machine. It makes a silent > and instantaneous soft reboot when performing (pretty tough) disk and > network access at the same time. I noticed this when trying to transfer > some 10+ Mb files from this machine as the screen just turned black and > the BIOS "welcome" screen appeared. No kernel oops or other message, > just a plain reboot. I can't find anything in the logs either. *sigh* > > If I am using the machine "normally" everything works just fine. That is > no fiddling with large files or performing any extreme network activity. > > I have found a very simple way of reproducing the crash. Just do a 'ping > -f' to the machine for a second or so and run 'hdparm -t /dev/hda' at > the same time. It reboots almost immediately. One more thing, if I do > 'ping -f' locally no matter to what address/if, I can't make it crash. > But from another machine - reboot. > > I have checked everything I can think of, i.e. conflicting IRQ:s, DMA > etc. I have tried to reassign almost everything in the BIOS but to no > avail. Also tested the 2.2.9 kernel but same thing there. I do not know > what to do next, does anyone of you have an idea? > > Some facts about the machine: > Intel Celeron 333 > 128Mb DIMM > Motherboard Abit BH6 (Award BIOS rev 4.51PG) > 2pcs NIC 3Com 3C905B-TX > Seagate Medalist ST38420A IDE 8,6Gb > Redhat 6.0 (kernel build 2.2.5-15)
Wild guess: problems with the powersupply. Why do I think this? Because generating massive amounts of networktraffic via the loopback doesn't generate the same result.
I have the following machine and use it as a NFS server:
Celeron 300 (oc to 450 MHz) 128 MB Abit BH6 2 * Digital DE500-BA (21143 chipset) 2 * Maxtor DiamondMax 8.4 GB EIDE (running in RAID0 configuration) Acer 10X CD-ROM (EIDE) Panasonic cheap-ass burner (via NCR 810 SCSI controller) 235 watt powersupply 2.2.6 kernel
I tested this system some time ago with a K6-200 (also with a DE500 NIC). I got a NFS performance of about 4.5 MB/sec (regular userland NFS) even while burning a CD. One NIC is connected to my cable-modem, the other to the K6 (100baseTX-FD). No instability whatsoever. The Maxtor disks transfer 11-14 MB/sec (across the entire surface) and the RAID0 stripset does about 20-21 MB/sec. Somehow I don't think it's Linux, but I could be wrong.
Mathijs
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