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[no subject]
From: |
Ludovic Courtès |
Date: |
Mon, 29 Jan 2018 12:07:17 -0500 (EST) |
branch: master
commit 23fecf8f3d2469a3de4f7ffae16224b0d21cc265
Author: Ludovic Courtès <address@hidden>
Date: Mon Jan 29 12:17:20 2018 +0100
cuirass: Log resource usage statistics regularly.
* src/cuirass/logging.scm (log-monitoring-stats): New procedure.
* bin/cuirass.in (main): Add a fiber that calls it regularly.
---
bin/cuirass.in | 8 ++++++++
src/cuirass/logging.scm | 15 ++++++++++++++-
2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/bin/cuirass.in b/bin/cuirass.in
index 580c2be..5c11ff0 100644
--- a/bin/cuirass.in
+++ b/bin/cuirass.in
@@ -142,6 +142,14 @@ exec ${GUILE:address@hidden@} --no-auto-compile -e main -s
"$0" "$@"
(run-cuirass-server db #:host host #:port port))))
#:parallel? #t)
+ (spawn-fiber
+ (essential-task
+ 'monitor exit-channel
+ (lambda ()
+ (while #t
+ (log-monitoring-stats)
+ (sleep 600)))))
+
(primitive-exit (get-message exit-channel))))))
;; Most of our code is I/O so preemption doesn't matter much (it
diff --git a/src/cuirass/logging.scm b/src/cuirass/logging.scm
index 9574b23..12d156c 100644
--- a/src/cuirass/logging.scm
+++ b/src/cuirass/logging.scm
@@ -19,10 +19,13 @@
(define-module (cuirass logging)
#:use-module (srfi srfi-19)
#:use-module (ice-9 format)
+ #:use-module (ice-9 threads)
+ #:use-module (ice-9 ftw)
#:export (current-logging-port
current-logging-procedure
log-message
- with-time-logging))
+ with-time-logging
+ log-monitoring-stats))
(define current-logging-port
(make-parameter (current-error-port)))
@@ -61,3 +64,13 @@
(define-syntax-rule (with-time-logging name exp ...)
"Log under NAME the time taken to evaluate EXP."
(call-with-time-logging name (lambda () exp ...)))
+
+(define (log-monitoring-stats)
+ "Log info about useful metrics: heap size, number of threads, etc."
+ (log-message "heap: ~,2f MiB; threads: ~a; file descriptors: ~a"
+ (/ (assoc-ref (gc-stats) 'heap-size) (expt 2. 20))
+ (length (all-threads))
+ (length
+ (scandir "/proc/self/fd"
+ (lambda (file)
+ (not (member file '("." ".."))))))))
- master updated (1206135 -> e058823), Ludovic Courtès, 2018/01/29
- [no subject], Ludovic Courtès, 2018/01/29
- [no subject], Ludovic Courtès, 2018/01/29
- [no subject], Ludovic Courtès, 2018/01/29
- [no subject],
Ludovic Courtès <=
- [no subject], Ludovic Courtès, 2018/01/29
- [no subject], Ludovic Courtès, 2018/01/29