Megatest

    (lambda ()(list (read)(read)(read))))))

;; get cpu load by reading from /proc/loadavg, return all three values
;;
(define (common:get-cpu-load remote-host)
  (handle-exceptions
   exn
   '(-99 -99 -99)
   (let* ((actual-hostname (or remote-host (get-host-name) "localhost")))
     (or (common:get-cached-info actual-hostname "cpu-load")
	 (let ((result (if remote-host
			   (map (lambda (res)
				  (if (eof-object? res) 9e99 res))
			        (with-input-from-pipe 
				 (conc "ssh " remote-host " cat /proc/loadavg")
				 (lambda ()(list (read)(read)(read)))))
			   (with-input-from-file "/proc/loadavg" 
			     (lambda ()(list (read)(read)(read)))))))
	   (match
	    result
	    ((l1 l2 l3)
	     (if (and (number? l1)
		      (number? l2)
		      (number? l3))
		 (begin
		   (common:write-cached-info actual-hostname "cpu-load" result)
		   result)
		 '(-1 -1 -1))) ;; -1 is bad result
	    (else '(-2 -2 -2))))))))

;; get normalized cpu load by reading from /proc/loadavg and /proc/cpuinfo return all three values and the number of real cpus and the number of threads
;; returns alist '((adj-cpu-load . normalized-proc-load) ... etc.
;;  keys: adj-proc-load, adj-core-load, 1m-load, 5m-load, 15m-load
;;
(define (common:get-normalized-cpu-load remote-host)
  (let ((res (common:get-normalized-cpu-load-raw remote-host))

	  (thread-sleep! (random 60)) ;; we failed to get num cpus. wait a bit and try again
	  (if (> rem-tries 0)
	      (common:wait-for-normalized-load maxload msg remote-host (- rem-tries 1))
	      #f)))))

;; DO NOT CALL THIS DIRECTLY. It is called from common:wait-for-normalized-load
;;
(define (common:wait-for-cpuload maxload-in numcpus-in waitdelay #!key (count 1000) (msg #f)(remote-host #f)(force-maxload #f)(num-tries 5))
  (let* ((loadavg (common:get-cpu-load remote-host))
	 (numcpus (if (<= 1 numcpus-in) ;; not possible to have zero.  If we get 1, it's possible that we got the previous default, and we should check again
		      (common:get-num-cpus remote-host)
		      numcpus-in))
	 (maxload (if force-maxload
		      maxload-in
		      (max maxload-in 0.5))) ;; so maxload must be greater than 0.5 for now BUG - FIXME?
	 (first   (car loadavg))
	 (next    (cadr loadavg))
	 (adjmaxload (* maxload (max 1 numcpus))) ;; possible bug where
					       ;; numcpus (or could be
					       ;; maxload) is zero,
					       ;; crude fallback is to
					       ;; at least use 1
	 (loadjmp (- first next))
	 ;; add some randomness to the time to break any alignment
	 ;; where netbatch dumps many jobs to machines simultaneously
         (adjwait (min (+ 300 (random 10)) (abs (* (+ (random 10)
						      (/ (- 1000 count) 10)
						      waitdelay)
						   (- first adjmaxload) ))  )))
    ;; let's let the user know once in a long while that load checking
    ;; is happening but not constantly report it
    (if (> (random 100) 75) ;; about 25% of the time
	(debug:print-info 1 *default-log-port* "Checking cpuload on " (or remote-host "localhost") ", maxload: " maxload
			  ", load: " first ", adjmaxload: " adjmaxload ", loadjmp: " loadjmp))
    (cond
     ((and (< first 0) ;; this indicates the loadavg data is bad - machine may not be reachable
	   (> num-tries 0))
      (debug:print 0 *default-log-port* "WARNING: received bad data from get-cpu-load " first ", we'll sleep 10s and try " num-tries " more times.")
      (thread-sleep! 10)
      (common:wait-for-cpuload maxload-in numcpus-in waitdelay
			       count: count remote-host: remote-host force-maxload: force-maxload num-tries: (- num-tries 1)))
     ((and (> first adjmaxload)
	   (> count 0))
      (debug:print-info 0 *default-log-port*
			"server start delayed " adjwait
			" seconds due to load " first
			" exceeding max of " adjmaxload
			" on server " (or remote-host (get-host-name))
			" (normalized load-limit: " maxload ") " (if msg msg ""))
      (thread-sleep! adjwait)
      (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
     ((and (> loadjmp numcpus)
	   (> count 0))
      (debug:print-info 0 *default-log-port* "waiting " adjwait " seconds due to load jump " loadjmp " > numcpus " numcpus (if msg msg ""))
      (thread-sleep! adjwait)
      (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
     (else
      (if (> num-tries 0)
	  (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") " is acceptable at " first " continuing.")
	  (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") ", "first" could not be retrieved. Giving up and continuing."))))))

(define (get-uname . params)
  (let* ((uname-res (process:cmd-run->list (conc "uname " (if (null? params) "-a" (car params)))))
	 (uname #f))
    (if (null? (car uname-res))
	"unknown"
	(caar uname-res))))