I recently upgraded to 126.96.36.199 (rev 5127) and am seeing very high RAM usage with cifs every time I try reading and writing files from my macintosh (10.12)
at first I thought it was just spotlight indexing that was causing the problem by opening large numbers of files for analysis, but I have seen it when doing slow processing on 10-20gb files over the course of several hours (image processing on 10gb mp4 files, so it was long, slow reads).
here is the last day's memory usage:
Fri 16:00 I mounted a cifs share from my mac and it started spotlight indexing. which led to maxing RAM, filling swap, and crashing the server.
Fri 22:00 is a reboot to tweak some settings
Sat 08:00 I mounted a cifs share again from my mac and it started spotlight indexing. I then turned spotlight off on the volume at 08:30 or so.
Sat 09:00 I started doing a file analysis on three 10gb files from my mac and you can see it maxed RAM, then started filling up swap around 13:00
Sat 14:00 I unmounted the drive, swap and RAM both return to normal.
the only log entries I found were:
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Mar 10 13:51:29 navis kernel: swap_pager_getswapspace(1): failed Mar 10 13:51:29 navis kernel: swap_pager: out of swap space
a pretty thorough search in the forums over the last year hasn't shown anything similar, anyone have any ideas? I guess I can always switch over to NFS, but then if I have a network issue, my local mac could hang.