On Jun 20, 7:56pm, macp...@c.icompute.com (Don Lee) wrote: -- Subject: Re: VOP_PUTPAGE ignores mount_nfs -o soft,intr
| FWIW, I have had a problem with my server getting stuck in "tstile". I coul= | d not reproduce the problem easily, but I saw it in production often enough= | that it was a headache. The Intel port (as opposed to PPC) seems not to h= | ave the problem. | | If there is no timeout on this loop, and it theoretically only has a proble= | m on HW errors, I have doubts. The machine with the hangs does not have any= | other symptoms of HW errors. HOWEVER, I have a persistent suspicion that t= | he PPC port drops interrupts on occasion. Just sayin. | | If this hang happens, I think a panic is far better than a hang. What I wou= | ld see is the machine lock up hard, with zillions of processes "stuck" in t= | stile, and no new procs could start. If I caught this early, I could get a = | couple of ps outputs done. Otherwise, I could get into the kernel debugger = | - sometimes. | | Just my opinion. Well, I think that this is a powerpc specific problem. Unfortunately it has been elusive... The tstile in the cv_wait() of the ioflush thread is common to all platforms (when the filesystem is unable to handle flushing a vnode). christos
