On Wed, 30 Jul 2003, Peter C. Lai wrote: > I'm noticing on a moderately loaded system, that sometimes when the kernel > increases the TX threshold (/kernel: dc0: TX underrun -- increasing TX > threshold), a few minutes later, the system hardlocks requiring a reset. > This routinely happens when I'm streaming MP3s over the network and the box > suddenly hardlocks; after I go back to inspect the logs, the TX buffer underrun > is the only thing in the log before the start of the kernel reboot messages. > This is occuring on 4.8-STABLE as of July 7, 2003 on an AMD K6-2 500 with > 348 Mb RAM and VIA Apollo MVP3 chipset. When the lockups occur, the system > temperatures are below 40C, with little disk activity, moderate ram and cpu > usage; the NIC (linksys LNE-100TX A) is usually doing a steady 50K/s at this point. > -- > Peter C. Lai
Rev 1.9.2.47 of if_dc.c (committed July 14th) should fix this problem for you. MBUF_STRESS_TEST showed similar symptoms as mbuf chain lengths were increased, which is how I detected the problem. Try grabbing the new if_dc.c: http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/sys/pci/if_dc.c?rev=1.9.2.47&content-type=text/plain And see how things go. Mike "Silby" Silbersack _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
