Megatest

		      (let ((newval (string->number (cadr match))))
			(if (number? newval)
			    (set! freespc newval))))))
	      (car df-results))
    freespc))
  
(define (get-cpu-load)
  (car (common:get-cpu-load)))
;;   (let* ((load-res (cmd-run->list "uptime"))
;; 	 (load-rx  (regexp "load average:\\s+(\\d+)"))
;; 	 (cpu-load #f))
;;     (for-each (lambda (l)
;; 		(let ((match (string-search load-rx l)))
;; 		  (if match
;; 		      (let ((newval (string->number (cadr match))))
;; 			(if (number? newval)
;; 			    (set! cpu-load newval))))))
;; 	      (car load-res))
;;     cpu-load))

;; get cpu load by reading from /proc/loadavg, return all three values
;;
(define (common:get-cpu-load)
  (with-input-from-file "/proc/loadavg" 
    (lambda ()(list (read)(read)(read)))))

(define (common:wait-for-cpuload maxload numcpus waitdelay #!key (count 1000))
  (let* ((loadavg (common:get-cpu-load))
	 (first   (car loadavg))
	 (next    (cadr loadavg))
	 (adjload (* maxload numcpus))
	 (loadjmp (- first next)))
    (cond
     ((and (> first adjload)
	   (> count 0))
      (print "waiting " waitdelay " seconds due to load " first " exceeding max of " adjload)
      (thread-sleep! waitdelay)
      (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1)))
     ((and (> loadjmp numcpus)
	   (> count 0))
      (print "waiting " waitdelay " seconds due to load jump " loadjmp " > numcpus " numcpus)
      (thread-sleep! waitdelay)
      (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1))))))

(define (common:get-num-cpus)
  (with-input-from-file "/proc/cpuinfo"
    (lambda ()
      (let loop ((numcpu 0)
		 (inl    (read-line)))
	(if (eof-object? inl)
	    numcpu
	    (loop (if (string-match "^processor\\s+:\\s+\\d+$" inl)
		      (+ numcpu 1)
		      numcpu)
		  (read-line)))))))

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