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[Unión] Cultura Imageboards/Textboards (818 respuestas)

291 : : 25/08/15(mar)24:51:12

>>287-290
>Update (11:13 AM PHT)
>I think I figured it out. A lot of processes are calling nfs_follow_link which is uninterruptible despite the fact that NFS is mounted with the "intr" flag. Tracebacks in dmesg show this to be the case. At this point 8chan is basically a big collection of symbolic links, but they all fall to one NFS server for resolution to the others. I thought NFS symbol links have a caching mechanism, but they don't. Since I/O contention is a HUGE problem on 8chan given the fact it has a shitty file cache on the hard disk (the REAL reason behind the Infinity Next project), uninterruptible follow_link processes competing with read/write from that server spell PHP dying.
>At least, in theory, maybe.
>Now I have to think about how to fix this. It's not a quick fix, I have to move a lot of files around. ETA 8 hours if it works.

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