Hi!We're having trouble here with our data acquisition systems when recording some 10MB/s from a PCI card to a file on NFS, using write ()'s of about 8kB. I thought is was connected to running X at the same time, but without X it also happened and I got part of a backtrace:
[scrolled off] kdb die vprintk do_page_fault do_page_fault iput load_balance_newidle schedule do_page_fault error_code nfs_dentry_iput iput nfs_dentry_iput prune_dcache shrink_dcache_memory shrink_slab balance_pgdat prepare_to_wait kswapd [...]The system is Scientific Linux CERN 4.3, based on RHEL4, kernel 2.6.9-34.EL.cernsmp, running on a two-way Xeon. What I'd like to know is whether a page fault can legally happen while shrinking the dcache; this sounds a bit counterintuitive to me. If anyone has an idea where to look for the cause of the crash, you're welcome.
Ciao,
Roland
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