https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211713
--- Comment #50 from commit-h...@freebsd.org --- A commit references this bug: Author: imp Date: Fri Mar 16 05:23:49 UTC 2018 New revision: 331046 URL: https://svnweb.freebsd.org/changeset/base/331046 Log: Try polling the qpairs on timeout. On some systems, we're getting timeouts when we use multiple queues on drives that work perfectly well on other systems. On a hunch, Jim Harris suggested I poll the completion queue when we get a timeout. This patch polls the completion queue if no fatal status was indicated. If it had pending I/O, we complete that request and return. Otherwise, if aborts are enabled and no fatal status, we abort the command and return. Otherwise we reset the card. This may clear up the problem, or we may see it result in lots of timeouts and a performance problem. Either way, we'll know the next step. We may also need to pay attention to the fatal status bit of the controller. PR: 211713 Suggested by: Jim Harris Sponsored by: Netflix Changes: head/sys/dev/nvme/nvme_private.h head/sys/dev/nvme/nvme_qpair.c -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
