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Changes In Branch v1.60-broken-test1 Excluding Merge-Ins

This is equivalent to a diff from 19f6ae918c to 62ccd43251

2014-12-10
08:05
Cherrypicked nodes f0a3 and 1b36 into v1.60 check-in: 9f5898d48f user: mrwellan tags: v1.60
2014-12-09
23:43
Fixed typo Closed-Leaf check-in: 62ccd43251 user: matt tags: v1.60-broken-test1
23:00
Tweak dashboard updates check-in: 1b36724a57 user: matt tags: v1.60-broken-test1
21:00
Hand-merged refactor of server launch/client start code check-in: e7355f3724 user: matt tags: v1.60-broken-test1
10:51
Removing mark-incomplete from runs queue processing check-in: 76ef9fc5ad user: mrwellan tags: temp-hacks
10:27
Treat any exceptions when logging into server as a dead server (for now) check-in: 19f6ae918c user: mrwellan tags: v1.60
09:38
Allow some retries on run queue processing if server died (temporary work-around until the recovery is coded correctly) check-in: 187be74df3 user: mrwellan tags: v1.60

Modified client.scm from [a61d4e6d81] to [fc43f1ccf0].

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				  ((nmsg)(let ((logininfo (rmt:login-no-auto-client-setup start-res run-id)))
 					   (if logininfo
 					       (car (vector-ref logininfo 1))
 					       #f))))))
		(if (and start-res
			 ping-res)
		    (begin
		      (hash-table-set! *runremote* run-id start-res)
		      (debug:print-info 2 "connected to " (http-transport:server-dat-make-url start-res))
		      start-res)
		    (begin    ;; login failed but have a server record, clean out the record and try again
		      (debug:print-info 0 "client:setup, login failed, will attempt to start server ... start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
		      (case *transport-type* 
			((http)(http-transport:close-connections run-id)))
		      (hash-table-delete! *runremote* run-id)








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				  ((nmsg)(let ((logininfo (rmt:login-no-auto-client-setup start-res run-id)))
 					   (if logininfo
 					       (car (vector-ref logininfo 1))
 					       #f))))))
		(if (and start-res
			 ping-res)
		    (begin
		      ;; (hash-table-set! *runremote* run-id start-res)
		      (debug:print-info 2 "connected to " (http-transport:server-dat-make-url start-res))
		      start-res)
		    (begin    ;; login failed but have a server record, clean out the record and try again
		      (debug:print-info 0 "client:setup, login failed, will attempt to start server ... start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
		      (case *transport-type* 
			((http)(http-transport:close-connections run-id)))
		      (hash-table-delete! *runremote* run-id)
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			  (thread-sleep! (+ 1 (random 5))) ;; spread out the starts a little
			  (thread-sleep! (+ 15 (random 20)))) ;; it isn't going well. give it plenty of time
		      (server:try-running run-id)
		      (thread-sleep! 5)   ;; give server a little time to start up
		      (client:setup run-id remaining-tries: (- remaining-tries 1))
		      )))
	      (begin    ;; no server registered
		(let ((num-available (tasks:num-in-available-state (db:dbdat-get-db tdbdat) run-id)))
		  (debug:print-info 0 "client:setup, no server registered, remaining-tries=" remaining-tries " num-available=" num-available)
		  (if (< num-available 2)
		      (server:try-running run-id))

		  (thread-sleep! (+ 5 (random (- 20 remaining-tries))))  ;; give server a little time to start up, randomize a little to avoid start storms.
		  (client:setup run-id remaining-tries: (- remaining-tries 1)))))))))

;; 	(let ((host-info (hash-table-ref/default *runremote* run-id #f)))
;; 	  (if host-info ;; this is a bit circular. the host-info *is* the start-res FIXME
;; 	      (let* ((iface     (http-transport:server-dat-get-iface host-info))
;; 		     (port      (http-transport:server-dat-get-port  host-info))
;; 		     (start-res (case *transport-type* 
;; 				  ((http)(http-transport:client-connect iface port))
;; 				  ((nmsg)(nmsg-transport:client-connect iface port)) ;; (http-transport:server-dat-get-socket host-info))
;; 				  (else #f)))
;; 		     (ping-res  (case *transport-type*
;; 				  ((http)(rmt:login-no-auto-client-setup start-res run-id))
;; 				  ((nmsg)(let ((logininfo (rmt:login-no-auto-client-setup start-res run-id)))
;; 					   (if logininfo
;; 					       (vector-ref (vector-ref logininfo 1) 1)
;; 					       #f)))
;; 				  (else #f))))
;; 		(if ping-res   ;; sucessful login?
;; 		    (begin
;; 		      (debug:print-info 2 "client:setup, ping is good using host-info=" host-info ", remaining-tries=" remaining-tries)
;; 		      start-res)  ;; return the server info
;; 		    ;; have host info but no ping. shutdown the current connection and try again
;; 		    (begin    ;; login failed
;; 		      (debug:print-info 1 "client:setup, ping is bad for start-res=" start-res " and *runremote*=" host-info)
;; 		      (case *transport-type*
;; 			((http)(http-transport:close-connections run-id)))
;; 		      (hash-table-delete! *runremote* run-id)
;; 		      (if (< remaining-tries 8)
;; 			  (thread-sleep! 5)
;; 			  (thread-sleep! 1))
;; 		      (client:setup run-id remaining-tries: (- remaining-tries 1)))))
;; 	      ;; YUK: rename server-dat here
;; 

;; keep this as a function to ease future 
(define (client:start run-id server-info)
  (http-transport:client-connect (tasks:hostinfo-get-interface server-info)
				 (tasks:hostinfo-get-port server-info)))

;; client:signal-handler








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			  (thread-sleep! (+ 1 (random 5))) ;; spread out the starts a little
			  (thread-sleep! (+ 15 (random 20)))) ;; it isn't going well. give it plenty of time
		      (server:try-running run-id)
		      (thread-sleep! 5)   ;; give server a little time to start up
		      (client:setup run-id remaining-tries: (- remaining-tries 1))
		      )))
	      (begin    ;; no server registered
		;; (let ((num-available (tasks:num-in-available-state (db:dbdat-get-db tdbdat) run-id)))
		;;   (debug:print-info 0 "client:setup, no server registered, remaining-tries=" remaining-tries " num-available=" num-available)
		;;   (if (< num-available 2)
		;;       (server:try-running run-id))
		(tasks:start-and-wait-for-server tdbdat run-id 10)
		;; (thread-sleep! (+ 2 (random (- 20 remaining-tries))))  ;; give server a little time to start up, randomize a little to avoid start storms.
		(client:setup run-id remaining-tries: (- remaining-tries 1))))))))

































;; keep this as a function to ease future 
(define (client:start run-id server-info)
  (http-transport:client-connect (tasks:hostinfo-get-interface server-info)
				 (tasks:hostinfo-get-port server-info)))

;; client:signal-handler
︙︙

Modified dashboard.scm from [6d6a8350b9] to [2960f85268].

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  (let* ((modtime         (dashboard:get-youngest-run-db-mod-time)) ;; (file-modification-time *db-file-path*))
	 (monitor-modtime (if (file-exists? *monitor-db-path*)
			      (file-modification-time *monitor-db-path*)
			      -1))
	 (run-update-time (current-seconds))
	 (recalc          (dashboard:recalc modtime *please-update-buttons* *last-db-update-time*)))
    (if (and (eq? *current-tab-number* 0)
	     (> monitor-modtime *last-monitor-update-time*))

	(begin
	  (set! *last-monitor-update-time* monitor-modtime)
	  (if dashboard:update-servers-table (dashboard:update-servers-table))))
    (if recalc
	(begin	
	  (case *current-tab-number* 
	    ((0) 
	     (if dashboard:update-summary-tab (dashboard:update-summary-tab)))
	    ((1) ;; The runs table is active








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  (let* ((modtime         (dashboard:get-youngest-run-db-mod-time)) ;; (file-modification-time *db-file-path*))
	 (monitor-modtime (if (file-exists? *monitor-db-path*)
			      (file-modification-time *monitor-db-path*)
			      -1))
	 (run-update-time (current-seconds))
	 (recalc          (dashboard:recalc modtime *please-update-buttons* *last-db-update-time*)))
    (if (and (eq? *current-tab-number* 0)
	     (or (> monitor-modtime *last-monitor-update-time*)
		 (> (- run-update-time *last-monitor-update-time*) 5))) ;; update every 1/2 minute just in case
	(begin
	  (set! *last-monitor-update-time* run-update-time) ;; monitor-modtime)
	  (if dashboard:update-servers-table (dashboard:update-servers-table))))
    (if recalc
	(begin	
	  (case *current-tab-number* 
	    ((0) 
	     (if dashboard:update-summary-tab (dashboard:update-summary-tab)))
	    ((1) ;; The runs table is active
︙︙

Modified rmt.scm from [c2992f6eb2] to [bd51259062].

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;; (require-library trace)
;; (import trace)
;; (trace
;; rmt:send-receive
;; api:execute-requests
;; )






;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; NOT USED
;;
(define (rmt:call-transport run-id connection-info cmd jparams)
  (case (server:get-transport)
    ((rpc)  ( rpc-transport:client-api-send-receive run-id connection-info cmd jparams))
    ((http) (http-transport:client-api-send-receive run-id connection-info cmd jparams))
    ((fs)   ( fs-transport:client-api-send-receive run-id connection-info cmd jparams))
    ((zmq)  (zmq-transport:client-api-send-receive run-id connection-info cmd jparams))
    (else   ( rpc-transport:client-api-send-receive run-id connection-info cmd jparams))))

;;
(define (rmt:write-frequency-over-limit? cmd run-id)
  (and (not (member cmd api:read-only-queries))
       (let* ((tmprec (hash-table-ref/default *write-frequency* run-id #f))
	      (record (if tmprec tmprec 
			  (let ((v (vector (current-seconds) 0)))








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;; (require-library trace)
;; (import trace)
;; (trace
;; rmt:send-receive
;; api:execute-requests
;; )

;; generate entries for ~/.megatestrc with the following
;;
;;  grep define ../rmt.scm | grep rmt: |perl -pi -e 's/\(define\s+\((\S+)\W.*$/\1/'|sort -u


;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; NOT USED?
;;
;; (define (rmt:call-transport run-id connection-info cmd jparams)
;;   (case (server:get-transport)
;;     ((rpc)  ( rpc-transport:client-api-send-receive run-id connection-info cmd jparams))
;;     ((http) (http-transport:client-api-send-receive run-id connection-info cmd jparams))
;;     ((fs)   ( fs-transport:client-api-send-receive run-id connection-info cmd jparams))
;;     ((zmq)  (zmq-transport:client-api-send-receive run-id connection-info cmd jparams))
;;     (else   ( rpc-transport:client-api-send-receive run-id connection-info cmd jparams))))

;;
(define (rmt:write-frequency-over-limit? cmd run-id)
  (and (not (member cmd api:read-only-queries))
       (let* ((tmprec (hash-table-ref/default *write-frequency* run-id #f))
	      (record (if tmprec tmprec 
			  (let ((v (vector (current-seconds) 0)))
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	 (if (and (> count 10)
		  (> queries-per-second 10))
	     (begin
	       (debug:print-info 1 "db write rate too high, starting a server, count=" count " start=" start " run-id=" run-id " queries-per-second=" queries-per-second)
	       #t)
	     #f))))

(define (rmt:get-connection-info run-id)
  (let ((cinfo (hash-table-ref/default *runremote* run-id #f)))
    (if cinfo
	cinfo
	;; NB// can cache the answer for server running for 10 seconds ...
	;;  ;; (and (not (rmt:write-frequency-over-limit? cmd run-id))
	(if (tasks:server-running-or-starting? (db:delay-if-busy (tasks:open-db)) run-id)


	    (client:setup run-id)
	    #f))))

(define *send-receive-mutex* (make-mutex)) ;; should have separate mutex per run-id
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)) ;; start attemptnum at 1 so the modulo below works as expected
  ;; clean out old connections
  (mutex-lock! *db-multi-sync-mutex*)
  (let ((expire-time (- (current-seconds) (server:get-timeout) 10))) ;; don't forget the 10 second margin
    (for-each 
     (lambda (run-id)
       (let ((connection (hash-table-ref/default *runremote* run-id #f)))
         (if (and (vector? connection)
        	  (< (http-transport:server-dat-get-last-access connection) expire-time))
             (begin
               (debug:print-info 0 "Discarding connection to server for run-id " run-id ", too long between accesses")
               ;; SHOULD CLOSE THE CONNECTION HERE
	       (case *transport-type*
		 ((nmsg)(nn-close (http-transport:server-dat-get-socket 
				   (hash-table-ref *runremote* run-id)))))
               (hash-table-delete! *runremote* run-id)))))
     (hash-table-keys *runremote*)))
  (mutex-unlock! *db-multi-sync-mutex*)

  ;; (mutex-lock! *send-receive-mutex*)
  (let* ((run-id          (if rid rid 0))
	 (connection-info (rmt:get-connection-info run-id)))
    ;; the nmsg method does the encoding under the hood (the http method should be changed to do this also)
    (if connection-info
	;; use the server if have connection info
	(let* ((dat     (case *transport-type*
			  ((http)(condition-case
				  (http-transport:client-api-send-receive run-id connection-info cmd params)


				  ((commfail)(vector #f "communications fail"))


				  ((exn)(vector #f "other fail"))))
			  ((nmsg)(condition-case
				  (nmsg-transport:client-api-send-receive run-id connection-info cmd params)
				  ((timeout)(vector #f "timeout talking to server"))))
			  (else  (exit))))
	       (success (if (vector? dat) (vector-ref dat 0) #f))
	       (res     (if (vector? dat) (vector-ref dat 1) #f)))
	  (if (vector? connection-info)(http-transport:server-dat-update-last-access connection-info))
	  (if success
	      (begin
		;; (mutex-unlock! *send-receive-mutex*)

		(case *transport-type* 
		  ((http) res) ;; (db:string->obj res))
		  ((nmsg) res))) ;; (vector-ref res 1)))

	      (begin ;; let ((new-connection-info (client:setup run-id)))
		(debug:print 0 "WARNING: Communication failed, trying call to rmt:send-receive again.")
		;; (case *transport-type*
		;;   ((nmsg)(nn-close (http-transport:server-dat-get-socket connection-info))))
		(hash-table-delete! *runremote* run-id) ;; don't keep using the same connection
		;; NOTE: killing server causes this process to block forever. No idea why. Dec 2. 
		;; (if (eq? (modulo attemptnum 5) 0)
		;;     (tasks:kill-server-run-id run-id tag: "api-send-receive-failed"))
		;; (mutex-unlock! *send-receive-mutex*) ;; close the mutex here to allow other threads access to communications
		(tasks:start-and-wait-for-server (tasks:open-db) run-id 15)
		;; (nmsg-transport:client-api-send-receive run-id connection-info cmd param remtries: (- remtries 1))))))

		;; no longer killing the server in http-transport:client-api-send-receive
		;; may kill it here but what are the criteria?
		;; start with three calls then kill server
		;; (if (eq? attemptnum 3)(tasks:kill-server-run-id run-id))
		;; (thread-sleep! 2)
		(rmt:send-receive cmd run-id params attemptnum: (+ attemptnum 1)))))
	;; no connection info? try to start a server
	(if (and (< attemptnum 15)
		 (member cmd api:write-queries))
	    (begin
	      (hash-table-delete! *runremote* run-id)
	      ;; (mutex-unlock! *send-receive-mutex*)
	      (tasks:start-and-wait-for-server (db:delay-if-busy (tasks:open-db)) run-id 10)
	      ;; (client:setup run-id) ;; client setup happens in rmt:get-connection-info
	      (thread-sleep! (random 5)) ;; give some time to settle and minimize collison?
	      (rmt:send-receive cmd rid params attemptnum: (+ attemptnum 1)))
	    (begin
	      ;; (debug:print 0 "ERROR: Communication failed!")
	      ;; (mutex-unlock! *send-receive-mutex*)
	      ;; (exit)
	      (rmt:open-qry-close-locally cmd run-id params)
	      )))))

(define (rmt:update-db-stats run-id rawcmd params duration)
  (mutex-lock! *db-stats-mutex*)
  (handle-exceptions
   exn








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	 (if (and (> count 10)
		  (> queries-per-second 10))
	     (begin
	       (debug:print-info 1 "db write rate too high, starting a server, count=" count " start=" start " run-id=" run-id " queries-per-second=" queries-per-second)
	       #t)
	     #f))))

;; (define (rmt:get-connection-info run-id)
;;   (let ((cinfo (hash-table-ref/default *runremote* run-id #f)))
;;     (if cinfo
;; 	cinfo
;; 	;; NB// can cache the answer for server running for 10 seconds ...
;; 	;;  ;; (and (not (rmt:write-frequency-over-limit? cmd run-id))
;; 	;; (if (tasks:server-running-or-starting? (db:delay-if-busy (tasks:open-db)) run-id)
;; 	;; (begin
;; 	;;   (tasks:start-and-wait-for-server (db:delay-if-busy (tasks:open-db)) run-id)
;; 	(client:setup run-id))))
;; 	;; #f))))

(define *send-receive-mutex* (make-mutex)) ;; should have separate mutex per run-id
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)) ;; start attemptnum at 1 so the modulo below works as expected
  ;; clean out old connections
  (mutex-lock! *db-multi-sync-mutex*)
  (let ((expire-time (- (current-seconds) (server:get-timeout) 10))) ;; don't forget the 10 second margin
    (for-each 
     (lambda (run-id)
       (let ((connection (hash-table-ref/default *runremote* run-id #f)))
         (if (and (vector? connection)
        	  (< (http-transport:server-dat-get-last-access connection) expire-time))
             (begin
               (debug:print-info 0 "Discarding connection to server for run-id " run-id ", too long between accesses")
               ;; SHOULD CLOSE THE CONNECTION HERE
	       (case *transport-type*
		 ((nmsg)(nn-close (http-transport:server-dat-get-socket 
				   (hash-table-ref *runremote* run-id)))))
               (hash-table-delete! *runremote* run-id)))))
     (hash-table-keys *runremote*)))
  (mutex-unlock! *db-multi-sync-mutex*)

  ;; (mutex-lock! *send-receive-mutex*)
  (let* ((run-id          (if rid rid 0))
	 (connection-info  (hash-table-ref/default *runremote* run-id #f))) ;; (rmt:get-connection-info run-id)))
    ;; the nmsg method does the encoding under the hood (the http method should be changed to do this also)
    (if connection-info
	;; use the server if have connection info
	(let* ((dat     (case *transport-type*
			  ((http)(condition-case
				  (http-transport:client-api-send-receive run-id connection-info cmd params)
				  ((commfail) 
				   (tasks:kill-server-run-id run-id) 
				   (vector #f "communications fail"))
				  ((exn)
				   (tasks:kill-server-run-id run-id)
				   (vector #f "other fail"))))
			  ((nmsg)(condition-case
				  (nmsg-transport:client-api-send-receive run-id connection-info cmd params)
				  ((timeout)(vector #f "timeout talking to server"))))
			  (else  (exit))))
	       (success (if (vector? dat) (vector-ref dat 0) #f))
	       (res     (if (vector? dat) (vector-ref dat 1) #f)))
	  (if (vector? connection-info)(http-transport:server-dat-update-last-access connection-info))
	  (if success
	      (begin
		;; (mutex-unlock! *send-receive-mutex*)
		;; all is well, return the result!
		(case *transport-type* 
		  ((http) res) ;; (db:string->obj res))
		  ((nmsg) res))) ;; (vector-ref res 1)))
	      ;; we had a connection but it is borked. clean up and reconnect
	      (begin ;; let ((new-connection-info (client:setup run-id)))
		(debug:print 0 "WARNING: Communication failed, trying call to rmt:send-receive again.")
		;; (case *transport-type*
		;;   ((nmsg)(nn-close (http-transport:server-dat-get-socket connection-info))))
		(hash-table-delete! *runremote* run-id) ;; don't keep using the same connection












		(rmt:send-receive cmd run-id params attemptnum: (+ attemptnum 1)))))
	;; no connection info? try to start a server
	(if (and (< attemptnum 15)
		 (member cmd api:write-queries))
	    (begin
	      (hash-table-delete! *runremote* run-id)
	      ;; (mutex-unlock! *send-receive-mutex*)
	      (tasks:start-and-wait-for-server (db:delay-if-busy (tasks:open-db)) run-id 10)
	      (hash-table-set! *runremote* run-id (client:setup run-id))

	      (rmt:send-receive cmd rid params attemptnum: (+ attemptnum 1)))
	    (begin



	      (rmt:open-qry-close-locally cmd run-id params)
	      )))))

(define (rmt:update-db-stats run-id rawcmd params duration)
  (mutex-lock! *db-stats-mutex*)
  (handle-exceptions
   exn
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			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))
	  
(define (rmt:open-qry-close-locally cmd run-id params)
  (let* ((dbstruct-local (if *dbstruct-db*
			     *dbstruct-db*
			     (let* ((dbdir (conc    (configf:lookup *configdat* "setup" "linktree") "/.db"))
				    (db (make-dbr:dbstruct path:  dbdir local: #t)))
			       (set! *dbstruct-db* db)
			       db)))
	 (db-file-path   (db:dbfile-path 0)))
    ;; (read-only      (not (file-read-access? db-file-path)))
    (let* ((start         (current-milliseconds))
	   (resdat        (api:execute-requests dbstruct-local (vector (symbol->string cmd) params)))
	   (res           (vector-ref resdat 1))

	   (duration      (- (current-milliseconds) start)))










      (rmt:update-db-stats run-id cmd params duration)
      ;; mark this run as dirty if this was a write
      (if (not (member cmd api:read-only-queries))
	  (let ((start-time (current-seconds)))
	    (mutex-lock! *db-multi-sync-mutex*)
	    ;; (if (not (hash-table-ref/default *db-local-sync* run-id #f))
	    ;; just set it every time. Is a write more expensive than a read and does it matter?
	    (hash-table-set! *db-local-sync* (or run-id 0) start-time) ;; the oldest "write"
	    (mutex-unlock! *db-multi-sync-mutex*)))
      res)))

(define (rmt:send-receive-no-auto-client-setup connection-info cmd run-id params)
  (let* ((run-id   (if run-id run-id 0))
	 ;; (jparams  (db:obj->string params)) ;; (rmt:dat->json-str params))
	 (res  	   (handle-exceptions
		    exn
		    #f








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			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))
	  
(define (rmt:open-qry-close-locally cmd run-id params #!key (remretries 5))
  (let* ((dbstruct-local (if *dbstruct-db*
			     *dbstruct-db*
			     (let* ((dbdir (conc    (configf:lookup *configdat* "setup" "linktree") "/.db"))
				    (db (make-dbr:dbstruct path:  dbdir local: #t)))
			       (set! *dbstruct-db* db)
			       db)))
	 (db-file-path   (db:dbfile-path 0))
	 ;; (read-only      (not (file-read-access? db-file-path)))
	 (start          (current-milliseconds))
	 (resdat         (api:execute-requests dbstruct-local (vector (symbol->string cmd) params)))
	 (success        (vector-ref resdat 0))
	 (res            (vector-ref resdat 1))
	 (duration       (- (current-milliseconds) start)))
    (if (not success)
	(if (> remretries 0)
	    (begin
	      (debug:print 0 "ERROR: local query failed. Trying again.")
	      (thread-sleep! (/ (random 5000) 1000)) ;; some random delay 
	      (rmt:open-qry-close-locally cmd run-id params remretries: (- remretries 1)))
	    (begin
	      (debug:print 0 "ERROR: too many retries in rmt:open-qry-close-locally, giving up")
	      #f))
	(begin
	  (rmt:update-db-stats run-id cmd params duration)
	  ;; mark this run as dirty if this was a write
	  (if (not (member cmd api:read-only-queries))
	      (let ((start-time (current-seconds)))
		(mutex-lock! *db-multi-sync-mutex*)
		;; (if (not (hash-table-ref/default *db-local-sync* run-id #f))
		;; just set it every time. Is a write more expensive than a read and does it matter?
		(hash-table-set! *db-local-sync* (or run-id 0) start-time) ;; the oldest "write"
		(mutex-unlock! *db-multi-sync-mutex*)))
	  res))))

(define (rmt:send-receive-no-auto-client-setup connection-info cmd run-id params)
  (let* ((run-id   (if run-id run-id 0))
	 ;; (jparams  (db:obj->string params)) ;; (rmt:dat->json-str params))
	 (res  	   (handle-exceptions
		    exn
		    #f
︙︙

Modified runs.scm from [866c85daf6] to [3bd91bccb4].

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    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *runs:denoise* key currtime)
	  #t)
	#f)))

(define (runs:can-run-more-tests run-id jobgroup max-concurrent-jobs)
  ;;(thread-sleep! (cond
  ;;      	  ((> *runs:can-run-more-tests-count* 20) 2);; obviously haven't had any work to do for a while
  ;;      	  (else 0)))
  (let* ((num-running             (rmt:get-count-tests-running run-id))
	 (num-running-in-jobgroup (rmt:get-count-tests-running-in-jobgroup run-id jobgroup))
	 (job-group-limit         (let ((jobg-count (config-lookup *configdat* "jobgroups" jobgroup)))
				    (if (string? jobg-count)
					(string->number jobg-count)
					jobg-count))))
    (if (> (+ num-running num-running-in-jobgroup) 0)








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    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *runs:denoise* key currtime)
	  #t)
	#f)))

(define (runs:can-run-more-tests run-id jobgroup max-concurrent-jobs)
  (thread-sleep! (cond
        	  ((> *runs:can-run-more-tests-count* 20) 2);; obviously haven't had any work to do for a while
        	  (else 0)))
  (let* ((num-running             (rmt:get-count-tests-running run-id))
	 (num-running-in-jobgroup (rmt:get-count-tests-running-in-jobgroup run-id jobgroup))
	 (job-group-limit         (let ((jobg-count (config-lookup *configdat* "jobgroups" jobgroup)))
				    (if (string? jobg-count)
					(string->number jobg-count)
					jobg-count))))
    (if (> (+ num-running num-running-in-jobgroup) 0)
︙︙

Modified tasks.scm from [edd9ff6647] to [4936b038b4].

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     (lambda (id)
       (set! res id))
     mdb ;; NEEDS dbprep ADDED
     "SELECT id FROM servers WHERE run_id=? AND state = 'running';" run-id)
    res))

(define (tasks:need-server run-id)
  (let ((forced (configf:lookup *configdat* "server" "required"))

	(maxqry (cdr (rmt:get-max-query-average run-id)))
	(threshold   (string->number (or (configf:lookup *configdat* "server" "server-query-threshold") "10"))))
    (cond
     (forced 
      (if (common:low-noise-print 60 run-id "server required is set")
	  (debug:print-info 0 "Server required is set, starting server for run-id " run-id "."))
      #t)
     ((> maxqry threshold)
      (if (common:low-noise-print 60 run-id "Max query time execeeded")
	  (debug:print-info 0 "Max avg query time of " maxqry "ms exceeds limit of " threshold "ms, server needed for run-id " run-id "."))
      #t)
     (else
      #f))))

;; try to start a server and wait for it to be available
;;
(define (tasks:start-and-wait-for-server tdbdat run-id delay-max-tries)
  ;; ensure a server is running for this run
  (let loop ((server-dat (tasks:get-server (db:delay-if-busy tdbdat) run-id))
	     (delay-time 0))
      (if (and (not server-dat)
	       (< delay-time delay-max-tries))
	  (begin
	    (if (common:low-noise-print 60 "tasks:start-and-wait-for-server" run-id)
		(debug:print 0 "Try starting server for run-id " run-id))
	    (thread-sleep! (/ (random 2000) 1000))
	    (server:kind-run run-id)
	    (thread-sleep! (min delay-time 1))
	    (loop (tasks:get-server (db:delay-if-busy tdbdat) run-id)(+ delay-time 1))))))

(define (tasks:get-all-servers mdb)
  (let ((res '()))
    (sqlite3:for-each-row
     (lambda (id pid hostname interface port pubport start-time priority state mt-version last-update transport run-id)
       ;;                       0  1     2         3      4     5          6        7     8          9          10        11     12
       (set! res (cons (vector id pid hostname interface port pubport start-time priority state mt-version last-update transport run-id) res)))








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     (lambda (id)
       (set! res id))
     mdb ;; NEEDS dbprep ADDED
     "SELECT id FROM servers WHERE run_id=? AND state = 'running';" run-id)
    res))

(define (tasks:need-server run-id)
  (configf:lookup *configdat* "server" "required"))

;; 	(maxqry (cdr (rmt:get-max-query-average run-id)))
;; 	(threshold   (string->number (or (configf:lookup *configdat* "server" "server-query-threshold") "10"))))
;;     (cond
;;      (forced 
;;       (if (common:low-noise-print 60 run-id "server required is set")
;; 	  (debug:print-info 0 "Server required is set, starting server for run-id " run-id "."))
;;       #t)
;;      ((> maxqry threshold)
;;       (if (common:low-noise-print 60 run-id "Max query time execeeded")
;; 	  (debug:print-info 0 "Max avg query time of " maxqry "ms exceeds limit of " threshold "ms, server needed for run-id " run-id "."))
;;       #t)
;;      (else
;;       #f))))

;; try to start a server and wait for it to be available
;;
(define (tasks:start-and-wait-for-server tdbdat run-id delay-max-tries)
  ;; ensure a server is running for this run
  (let loop ((server-running (tasks:server-running? (db:delay-if-busy tdbdat) run-id))
	     (delay-time 0))
      (if (and (not server-running)
	       (< delay-time delay-max-tries))
	  (begin
	    (if (common:low-noise-print 60 "tasks:start-and-wait-for-server" run-id)
		(debug:print 0 "Try starting server for run-id " run-id))
	    (thread-sleep! (/ (random 2000) 1000))
	    (server:kind-run run-id)
	    (thread-sleep! (min delay-time 1))
	    (loop (tasks:server-running? (db:delay-if-busy tdbdat) run-id)(+ delay-time 1))))))

(define (tasks:get-all-servers mdb)
  (let ((res '()))
    (sqlite3:for-each-row
     (lambda (id pid hostname interface port pubport start-time priority state mt-version last-update transport run-id)
       ;;                       0  1     2         3      4     5          6        7     8          9          10        11     12
       (set! res (cons (vector id pid hostname interface port pubport start-time priority state mt-version last-update transport run-id) res)))
︙︙

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