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| author | Alexander Motin <mav@FreeBSD.org> | 2017-01-09 18:18:15 +0000 |
|---|---|---|
| committer | Alexander Motin <mav@FreeBSD.org> | 2017-01-09 18:18:15 +0000 |
| commit | bb8f9017b30a4631b323bc30e08aa97756c4094e (patch) | |
| tree | 2020db09bc9e3a4045e64b66128e9125bb3514d1 /sys/cam/ctl/ctl_private.h | |
| parent | b8bf08b1fa2b230bbbc1b1d1ec68d27ad4e21b65 (diff) | |
| download | src-bb8f9017b30a4631b323bc30e08aa97756c4094e.tar.gz src-bb8f9017b30a4631b323bc30e08aa97756c4094e.zip | |
Rewrite CTL statistics in more simple and scalable way.
Instead of collecting statistics for each combination of ports and logical
units, that consumed ~45KB per LU with present number of ports, collect
separate statistics for every port and every logical unit separately, that
consume only 176 bytes per each single LU/port. This reduces struct
ctl_lun size down to just 6KB.
Also new IOCTL API/ABI does not hardcode number of LUs/ports, and should
allow handling of very large quantities.
MFC after: 2 weeks (probably keeping old API enabled for some time)
Notes
Notes:
svn path=/head/; revision=311804
Diffstat (limited to 'sys/cam/ctl/ctl_private.h')
| -rw-r--r-- | sys/cam/ctl/ctl_private.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/cam/ctl/ctl_private.h b/sys/cam/ctl/ctl_private.h index 5b71f9a0eff2..3f46769806b1 100644 --- a/sys/cam/ctl/ctl_private.h +++ b/sys/cam/ctl/ctl_private.h @@ -1,6 +1,6 @@ /*- * Copyright (c) 2003, 2004, 2005, 2008 Silicon Graphics International Corp. - * Copyright (c) 2014-2015 Alexander Motin <mav@FreeBSD.org> + * Copyright (c) 2014-2017 Alexander Motin <mav@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -404,7 +404,10 @@ struct ctl_lun { struct callout ie_callout; /* INTERVAL TIMER */ struct ctl_mode_pages mode_pages; struct ctl_log_pages log_pages; - struct ctl_lun_io_stats stats; +#ifdef CTL_LEGACY_STATS + struct ctl_lun_io_stats legacy_stats; +#endif /* CTL_LEGACY_STATS */ + struct ctl_io_stats stats; uint32_t res_idx; uint32_t pr_generation; uint64_t *pr_keys[CTL_MAX_PORTS]; |