with 2.8.0 or 2.10.0 client running on Centos 7.1511 (7.2), when I run IOR from a single node with 4 mpi processes & 100G file size, I get messages like this:
Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#4 stuck for 23s! [ptlrpcd_00_04:32758] Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#5 stuck for 23s! [ptlrpcd_00_07:32761] Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#7 stuck for 23s! [socknal_sd00_03:32742] Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#9 stuck for 23s! [ptlrpcd_01_05:307] Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#14 stuck for 23s! [ptlrpcd_01_10:312] Message from syslogd@c0 at Oct 6 21:12:43 ... kernel:BUG: soft lockup - CPU#15 stuck for 23s! [ptlrpcd_01_08:310] then my ssh session is terminated, and I'm unable to log back in again. running with 2 threads works just fine, so I'm guessing I'm dealing with some resource issue (probably memory). Any one have any idea? thanks, -john c p.s. fyi, for completeness, the Lustre server-side is 2 OSS & 2 MDS/MGS failover pairs running 2.8.0 over ZFS, and appears to show no ill effects. _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
