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Author SHA1 Message Date
Michal Mielewczyk
3a26bc56cd pyocf: improve test logging 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 18:37:58 +01:00
Michal Mielewczyk
7f862c3080 pyocf: improve random string generator 
Set of random characters may be exteded with a custom list.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 18:37:58 +01:00
Michal Mielewczyk
a81be31dd4 pyocf: default range for int16 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 18:37:58 +01:00
Michal Mielewczyk
c4a2dc4cad pyocf: security tests for ioclass api 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 18:37:58 +01:00
Michal Mielewczyk
fa556247d7 pyocf: change encoding of ioclass name 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 14:46:57 +01:00
Michal Mielewczyk
080e13a071 pyocf: valid ranges for ioclass config values 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 14:46:57 +01:00
Michal Mielewczyk
f1012b020b Validate ioclass config 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 14:46:57 +01:00
Michal Mielewczyk
06edc48717 pyocf: remove min_size from ioclass config 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 14:46:57 +01:00
Michal Mielewczyk
95d756de91 Remove ioclass min_size from public API 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-03-02 14:46:57 +01:00
Michal Mielewczyk
5c053ad964 pyocf: security test for seq cutoff threshold 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
73d6fb33de pyocf: api for setting core seq cutoff threshold 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
9aebf57efa pyocf: valid ranges for seq cutoff threshold 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
f61472c3f4 Validate seq cutoff threshold value 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
d909698790 pyocf: fix acp security test 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
482861423b pyocf: security test for acp params 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
43ff4aae5f pyocf: security test for alru params 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 08:24:41 -05:00
Michal Mielewczyk
92f67c65f0 pyocf: valid ranges for cleaning policy params 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-26 07:56:38 -05:00
Robert Baldyga
b207222bd8
Merge pull request #444 from Ostrokrzew/template 
Create template for issues
 2021-02-25 20:04:36 +01:00
Robert Baldyga
9dba49192f
Merge pull request #462 from arutk/no_bits_lock 
Get rid of status bits lock
 2021-02-19 10:12:46 +01:00
Adam Rutkowski
c95f6358ab Get rid of status bits lock 
All the status bits operations are now protectec by
hash bucket locks

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-18 15:05:53 -06:00
Adam Rutkowski
cd9e42f987 Properly lock hash bucket for status bits operations 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-18 15:02:50 -06:00
Robert Baldyga
75baec5aa5
Merge pull request #456 from arutk/aalru 
Relax LRU list ordering to minimize list updates
 2021-02-18 13:48:54 +01:00
Robert Baldyga
91cbeed611
Merge pull request #461 from mmichal10/evict-pinned 
Evict pinned overflown ioclass
 2021-02-16 13:55:52 +01:00
Michal Mielewczyk
83f142c987 Functional test for overflown pinned ioclass 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-16 07:07:01 -05:00
Slawomir Jankowski
2741acc069 Create templates for issues 
Signed-off-by: Slawomir Jankowski <slawomir.jankowski@intel.com>
 2021-02-16 11:36:53 +01:00
Michal Mielewczyk
7f3f2ad115 Evict from overflown pinned ioclass 
If an ioclass is pinned but it exceeded its occupancy limit, it should be
evicted anyway.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-16 04:06:07 -05:00
Robert Baldyga
fe206a86ec
Merge pull request #452 from arutk/split_gml_master 
Split global metadata lock
 2021-02-15 18:10:36 +01:00
Adam Rutkowski
0748f33a9d Align each global metadata lock to 64B 
.. in order to move primitives intended to be accessed
concurrently in separate CPU cache line.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-15 11:27:49 -06:00
Adam Rutkowski
05780c98ed Split global metadata lock 
Divide single global lock instance into 4 to reduce contention
in multiple read-locks scenario.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-15 11:27:49 -06:00
Adam Rutkowski
10c3c3de36 Renaming hash bucket locking functions 
1. new abbreviated previx: ocf_hb (HB stands for hash bucket)
2. clear distinction between functions requiring caller to
   hold metadata shared global lock ("naked") vs the ones
   which acquire global lock on its own ("prot" for protected)
3. clear distinction between hash bucket locking functions
   accepting hash bucket id ("id"), core line and lba ("cline")
   and entire request ("req").

Resulting naming scheme:
ocf_hb_(id/cline/req)_(prot/naked)_(lock/unlock/trylock)_(rd/wr)

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-12 18:08:15 -06:00
Adam Rutkowski
c822c953ed Fix return status from hash bucket trylock wr 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-11 15:02:06 -06:00
Robert Baldyga
af8177d2ba
Merge pull request #458 from mmichal10/fix-cleaning 
Fix updating hot cachelines cleaning list
 2021-02-11 11:30:07 +01:00
Robert Baldyga
d03ea719cd
Merge pull request #451 from arutk/exact_evict_count 
only request evict size equal to request unmapped count
 2021-02-11 10:47:12 +01:00
Michal Mielewczyk
fa41d4fc88 Fix updating hot cachelines cleaning list 
Update cacheline's timestamp each time it's being written.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-10 10:02:57 -05:00
Adam Rutkowski
9e98eec361 Only acquire read lock to verify lru elem hotness 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 16:23:01 -06:00
Adam Rutkowski
c04bfa3962 Add macros to read lock eviction list 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 16:23:01 -06:00
Adam Rutkowski
9690f13bef Change eviction spin lock to RW lock 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 16:23:01 -06:00
Adam Rutkowski
1908707a3d LRU list unit tests 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 16:23:01 -06:00
Adam Rutkowski
b4daac11c2 Track hot items on LRU list 
Top 50% least recently used cachelines are not promoted
to list head upon access. Only after cacheline drops to
bottom 50% it is considered as a candidate to promote
to list head.

The purpose of this change is to reduce overhead of
LRU list maintanance for hot cachelines.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 16:22:55 -06:00
Adam Rutkowski
4276d65e5a unit tests for new eviction order 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 12:51:39 -06:00
Adam Rutkowski
746b32c47d Evict from overflown partitions first 
Overflown partitions now have precedence over others during
eviction, regardless of IO class priorities.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 12:51:39 -06:00
Adam Rutkowski
5538a5a95d Only request evict size equal to request unmapped count 
Removing the logic for oportunistic partition overflow
reduction by evicting more cachelines than actually
required by the request being serviced.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 11:11:15 -06:00
Robert Baldyga
fd26735157
Merge pull request #450 from mmichal10/ioclass-stats-fix 
Reset per-partition counters when adding core
 2021-02-03 13:13:30 +01:00
Michal Mielewczyk
93eccc862a Reset per-partition counters when adding core 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-03 06:18:44 -05:00
Robert Baldyga
3543f5c5cc
Merge pull request #443 from rafalste/update_copyright 
Update copyright statements (2021)
 2021-02-03 11:59:39 +01:00
Robert Baldyga
3ddefc9b59
Merge pull request #446 from mmichal10/lock-on-hit 
Don't evict on hit
 2021-02-02 15:18:22 +01:00
Michal Mielewczyk
3a7b55c4c2 Don't evict on hit 
If request is hit, simply try to acquire cachelines instead of verifying
whether target partition's size is not exceeded.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-29 17:15:32 -05:00
Rafal Stefanowski
6ed4cf8a24 Update copyright statements (2021) 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-01-21 13:17:34 +01:00
Robert Baldyga
7f72a9431c
Merge pull request #442 from arutk/cleaner_page_lock 
Add missing collision page lock in cleaner
 2021-01-21 09:25:21 +01:00
Adam Rutkowski
012438c279 Add missing collision page lock in cleaner 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-01-20 19:28:41 -06:00