https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230454
Mark Millard <marklmi26-f...@yahoo.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marklmi26-f...@yahoo.com --- Comment #6 from Mark Millard <marklmi26-f...@yahoo.com> --- (In reply to Warner Losh from comment #5) While Bob P.'s reports were with large gstat reporting large ms/w and/or ms/r, Trev had made reports of getting the problem without gstat indicating multi-second delays (averages for some time intervals) and having lots of swap still available, starting at: https://lists.freebsd.org/pipermail/freebsd-arm/2018-June/018151.html (But Trev only provided short segments of the records in messages instead of posting the whole logs somewhere. This limits confirmation.) Note to avoid misinterpretation: I am in general agreement with the following as appropriate experiments . . . "You need to add non-flash swap" and "Spinning disks suffer much less from these issues" although I would explicitly add that there are SSD-based USB drives and at least some of these might be about as good as using a direct SATA SSD environment with good SSDs. (Correct me if I'm wrong for some reason.) Notes on testing: Having records from, say, periodic gstat runs, is a good cross check in all cases. Having the information-reporting patches from Mark Johnston are appropriate for testing as well. http://www.zefox.net/~fbsd/rpi3/swaptests/tools/ has various things that have been used in testing. But batchqueue.patch did not pan out and likely should be avoided. Similarly for config_options. The readme is what talks about: sysctl vm.pageout_oom_seq=120 The rest are patches for reporting of additional information during operation. These are likely more important than the gstat ms/w and ms/r records. The context for the patches is recent head, not 11.x . -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"