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Comment:several tries later ...
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Timelines: family | ancestors | descendants | both | v1.65
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SHA1: 7308f2111fcaed7ab9f2870af601d54676ae5169
User & Date: mrwellan on 2020-08-11 23:26:34
Other Links: branch diff | manifest | tags
Context
2020-08-12
00:40
Deficit based runner control check-in: 161115127c user: matt tags: v1.65
2020-08-11
23:26
several tries later ... check-in: 7308f2111f user: mrwellan tags: v1.65
00:37
Initial attempt at runner throttle. NOT WORKING QUITE RIGHT check-in: 5c5398b2f2 user: mrwellan tags: v1.65
Changes
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Modified api.scm from [70cdbd0f27] to [873dee2312].

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                   ((lock/unlock-run)              (apply db:lock/unlock-run dbstruct params))
                   ((update-run-event_time)        (apply db:update-run-event_time dbstruct params))
                   ((update-run-stats)             (apply db:update-run-stats dbstruct params))
                   ((set-var)                      (apply db:set-var dbstruct params))
                   ((inc-var)                      (apply db:inc-var dbstruct params))
		   ((dec-var)                      (apply db:dec-var dbstruct params))
                   ((del-var)                      (apply db:del-var dbstruct params))
		   ((add-var)                      (apply db:add-var dbstruct params))

                   ;; STEPS
                   ((teststep-set-status!)         (apply db:teststep-set-status! dbstruct params))
                   ((delete-steps-for-test!)        (apply db:delete-steps-for-test! dbstruct params))
                   
                   ;; TEST DATA
                   ((test-data-rollup)             (apply db:test-data-rollup dbstruct params))
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Modified db.scm from [b0064c2033] to [05d7378293].

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;; 	  (set! *last-global-delta-printed* *global-delta*)))

(define (db:set-var dbstruct var val)
  (db:with-db dbstruct #f #t 
	      (lambda (db)
		(sqlite3:execute db "INSERT OR REPLACE INTO metadat (var,val) VALUES (?,?);" var val))))

(define (db:add-var dbstruct var val)
  (db:with-db dbstruct #f #t 
	      (lambda (db)
		(sqlite3:execute db "UPDATE metadat SET val=val+? WHERE var=?;" val var))))

(define (db:del-var dbstruct var)
  (db:with-db dbstruct #f #t 
	      (lambda (db)
		(sqlite3:execute db "DELETE FROM metadat WHERE var=?;" var))))

;;======================================================================
;; no-sync.db - small bits of data to be shared between servers
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Modified rmt.scm from [c90382995e] to [db44f9a638].

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(define (rmt:inc-var varname)
  (rmt:send-receive 'inc-var #f (list varname)))

(define (rmt:dec-var varname)
  (rmt:send-receive 'dec-var #f (list varname)))

(define (rmt:add-var varname value)
  (rmt:send-receive 'add-var #f (list varname value)))

;;======================================================================
;; M U L T I R U N   Q U E R I E S
;;======================================================================

;; Need to move this to multi-run section and make associated changes
(define (rmt:find-and-mark-incomplete-all-runs #!key (ovr-deadtime #f))
  (let ((run-ids (rmt:get-all-run-ids)))
︙

Modified runs.scm from [d0362390bc] to [81d0b26380].

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  test-patts required-tests test-registry
  registry-mutex flags keyvals run-info all-tests-registry
  can-run-more-tests
  ((can-run-more-tests-count 0) : fixnum)
  (last-runners-check         0)  ;; time when we last checked number of runners
  (last-runners-count        #f)  ;; 
  (runner-registered         #f)  ;; have I registered myself?
  (run-skip-count             0)  ;; how many times have I skipped running sequentially 
  (run-skip-count             0)  ;; how many times have I skipped running sequentially
  (runners-mgmt-mode          'rest-mode)
  )

(defstruct runs:testdat
  hed tal reg reruns  test-record
  test-name item-path jobgroup
  waitons testmode  newtal itemmaps prereqs-not-met)

(define (runs:print-parallel-runners-state state num-registered last-registered skip-count)
  (debug:print-info 0 *default-log-port* "runs:parallel-runners-mgmt, state=" state
		    ", num-registered=" num-registered ", last-registered=" last-registered
		    ", skip-count=" skip-count))

(define (runs:print-parallel-runners-state2 state num-registered last-runners-count skip-count)
  (debug:print-info 0 *default-log-port* "runs:parallel-runners-mgmt, state=" state
		    ", num-registered=" num-registered ", last-runners-count=" last-runners-count
		    ", skip-count=" skip-count))


(define (runs:parallel-runners-mgmt rdat)
;; Second try
;;
(define (runs:parallel-runners-mgmt-2 rdat)
  (let ((time-to-check 2.8) ;; 28
	(time-to-wait  3.0))
    (if (> (- (current-seconds) (runs:dat-last-runners-check rdat)) time-to-check) ;; time to check
	(let* ((num-registered     (or (rmt:get-var "num-runners")        0))
	       (last-runners-count (runs:dat-last-runners-count rdat))
	       (skip-count      (runs:dat-run-skip-count rdat)))
	  (cond
	   ;; first time in
	   ((not last-runners-count)
	    (runs:print-parallel-runners-state2 "A" num-registered last-runners-count skip-count)
	    (if (eq? num-registered 0)
	    (rmt:set-var "num-runners" 1)
		(rmt:set-var "num-runners" 1)
		(rmt:inc-var "num-runners"))
	    (runs:dat-last-runners-count-set! rdat num-registered)
	    (runs:dat-run-skip-count-set! rdat 0))
	   ;; too many waits, decrement num-runners and continue on
	   ;; too many waits, decrement num-runners, reset last-runners and continue on
	   ((> (runs:dat-run-skip-count rdat) 3) 
	    (runs:print-parallel-runners-state2 "B" num-registered last-runners-count skip-count)
	    (rmt:dec-var "num-runners")
	    (runs:dat-run-skip-count-set! rdat 0))
	    (runs:dat-run-skip-count-set! rdat 0)
	    (runs:dat-last-runners-count-set! rdat num-registered))
	    ;; too many running, take a break
	   ((> num-registered last-runners-count)
	   ((> num-registered last-runners-count) ;; (+ last-runners-count 1))
	    (runs:print-parallel-runners-state2 "C" num-registered last-runners-count skip-count)
	    (rmt:dec-var "num-runners")
	    (debug:print-info 0 *default-log-port*
			      "Too many running (" num-registered
			      "), last-count=" last-runners-count " waiting... ")
			      "), last-count=" last-runners-count " waiting " time-to-wait " seconds ... ")
	    (thread-sleep! time-to-wait)
	    (runs:dat-run-skip-count-set! rdat (+ (runs:dat-run-skip-count rdat) 1)))
	    (runs:dat-run-skip-count-set! rdat (+ (runs:dat-run-skip-count rdat) 1))
	    ;; adjust down last-runners-count
	    (if (< num-registered last-runners-count)
		(runs:dat-last-runners-set! rdat num-running))
	    (rmt:inc-var "num-runners")
	    )
	   ;; we have been in waiting mode, do not increment again as we already did that
	   ((> skip-count 0)
	    (runs:print-parallel-runners-state2 "D" num-registered last-runners-count skip-count)
	    (runs:dat-run-skip-count-set! rdat 0)
	    ;; (runs:dat-last-runners-count-set! rdat num-registered)
	    )
	   ;; skip count is zero, not too many running, this is transition into running
	   (else
	    (runs:print-parallel-runners-state2 "E" num-registered last-runners-count skip-count)
	    (rmt:inc-var "num-runners")
	    ;; (rmt:inc-var "num-runners")
	    #;(runs:dat-run-skip-count-set! rdat 0)))))))
  
;; Third try, use a running average
;;
;;    ADD A COUNT OF TIMES CYCLED THROUGH REST MODE
;;
;;  runners-mgmt-mode 
;;
(define (runs:parallel-runners-mgmt-3 rdat)
  (let ((time-to-check 2.8) ;; 28
	(time-to-wait  3.0))
    (if (> (- (current-seconds) (runs:dat-last-runners-check rdat)) time-to-check) ;; time to check
	(let* ((skip-count         (runs:dat-run-skip-count rdat))
	       (mgmt-mode          (runs:dat-runners-mgmt-mode rdat)) ;;
	       (num-registered     (rmt:get-var "num-runners"))
	       (last-runners-count (if (runs:dat-last-runners-count rdat)
				       (runs:dat-last-runners-count rdat)
				       (or num-registered 1)))
	       (last-runners-ravg  (/ (+ last-runners-count num-registered) 2)#;(if (> num-registered last-runners-count)
				       (/ (+ last-runners-count num-registered) 2)
				       (/ (+ (* num-registered 4) last-runners-count) 5) ;; slow on down
				       ))     ;; running average
	       )
	  ;; initialize and sanitize values if needed
	  (cond
	   ((not num-registered) ;; first in, initialize to 1
	    (debug:print-info 0 *default-log-port* " adjusting num-runners up to 1, currently it is not defined")
	    (rmt:set-var "num-runners" 1))
	   ((< num-registered 1) ;; this should not be, reset to 1 to make it less confusing
	    (debug:print-info 0 *default-log-port* " adjusting num-runners up to 1, currently it is " num-registered)
	    (rmt:set-var "num-runners" 1)))
	  (if (not (member mgmt-mode '(rest-mode work-mode)))
	      (begin
		(debug:print-info 0 *default-log-port* " setting mgmt-mode to work-mode, currently it is " mgmt-mode)
		(rmt:inc-var "num-runners")
		(set! last-runners-ravg (+ last-runners-ravg 1))
		(runs:dat-runners-mgmt-mode-set! rdat 'rest-mode)))
	  
	  (runs:dat-last-runners-count-set! rdat last-runners-ravg)
	  ;; to rest or not rest?
	  (if (and (< skip-count 5)
		   (> num-registered last-runners-count)) ;;(+ last-runners-ravg 0.5))) ;; there seem to be other runners out there
	      (begin ;; gonna rest
		(debug:print-info 0 *default-log-port* "Too many running, num-registered=" num-registered ", ravg=" last-runners-ravg
				  ", real num runners=" (rmt:get-var "num-runners") ", skip-count=" skip-count)
		(if (eq? mgmt-mode 'work-mode)
		    (rmt:dec-var "num-runners"))
		(runs:dat-runners-mgmt-mode-set! rdat 'rest-mode)
		(runs:dat-run-skip-count-set! rdat (+ (runs:dat-run-skip-count rdat) 1))
		(thread-sleep! time-to-wait)
		(runs:parallel-runners-mgmt-3 rdat)
		)
	      (begin
		(runs:dat-run-skip-count-set! rdat 0)
		(if (eq? mgmt-mode 'rest-mode)
		    (rmt:inc-var "num-runners")) ;; going into work mode if not already in work mode
 		(runs:dat-runners-mgmt-mode-set! rdat 'work-mode)
		(debug:print-info 0 *default-log-port* "All good, keep running, num-registered="
				  num-registered ", ravg=" last-runners-ravg ", mode=" mgmt-mode
				   ", skip-count=" skip-count))
	      )))))

	  
;; To test parallel-runners management start a repl:
;;  megatest -repl
;; then run:
;;  (runs:test-parallel-runners 60)
;;
(define (runs:test-parallel-runners duration #!optional (proc #f))
  (let* ((rdat   (make-runs:dat))
	 (rtime  0)
	 (startt (current-seconds))
	 (endt   (+ startt duration)))
    ((or proc runs:parallel-runners-mgmt-3) rdat)
    (let loop ()
      (let* ((wstart (current-seconds)))
	(if (< wstart endt)
	    (let* ((work-time (random 10)))
	      #;(debug:print-info 0 *default-log-port* "working for " work-time
				" seconds. Total work: " rtime ", elapsed time: " (- wstart startt))
	      (thread-sleep! work-time)
	      (set! rtime (+ rtime work-time))
	      ((or proc runs:parallel-runners-mgmt-3) rdat)
	      (loop)))))
    (let* ((done-time (current-seconds)))
      (debug:print-info 0 *default-log-port* "DONE: rtime=" rtime ", elapsed time=" (- done-time startt)
			", ratio=" (/ rtime (- done-time startt))))))

;; (define (runs:parallel-runners-mgmt rdat)
;;   (let ((time-to-check 2.8) ;; 28
;; 	(time-to-wait  3.0))
;;   (if (> (- (current-seconds) (runs:dat-last-runners-check rdat)) time-to-check) ;; time to check
;;       (let* ((num-registered  (or (rmt:get-var "num-runners")        0))
;; 	     (last-registered (or (rmt:get-var "runner-change-time") 0))
︙

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