From: Marc Fiuczynski <mef@cs.princeton.edu>
Date: Mon, 11 Jul 2005 19:38:42 +0000 (+0000)
Subject: Added set_sched for vserver scheduler.
X-Git-Tag: after-util-vserver-0_30_208-revert~162
X-Git-Url: http://git.onelab.eu/?p=util-vserver.git;a=commitdiff_plain;h=17ba7ec8cd570d3656e233c660b82cd34f6a0eb6

Added set_sched for vserver scheduler.
---

diff --git a/python/vserver.py b/python/vserver.py
index 666ef00..4a7728d 100644
--- a/python/vserver.py
+++ b/python/vserver.py
@@ -42,6 +42,9 @@ FLAGS_HIDEINFO = 32
 FLAGS_ULIMIT = 64
 FLAGS_NAMESPACE = 128
 
+# default values for new vserver scheduler
+SCHED_TOKENS_MIN = 50
+SCHED_TOKENS_MAX = 100
 
               
 class VServer:
@@ -106,6 +109,27 @@ class VServer:
 
         return blocktotal
 
+    def set_sched(self, shares, besteffort = True):
+        global SCHED_TOKENS_MIN, SCHED_TOKENS_MAX
+        tokensmin = SCHED_TOKENS_MIN
+        tokensmax = SCHED_TOKENS_MAX
+
+        if besteffort is True:
+            # magic "interval" value for Andy's scheduler to denote besteffort
+            interval = 1000
+            fillrate = shares
+        else:
+            interval = 1001
+            fillrate = shares
+
+        try:
+            vserverimpl.setsched(self.ctx,fillrate,interval,tokensmin,tokensmax)
+        except OSError, ex:
+            if ex.errno == 22:
+                print "kernel does not support vserver scheduler"
+            else:
+                raise ex
+
     def open(self, filename, mode = "r", bufsize = -1):
 
         (sendsock, recvsock) = passfdimpl.socketpair()