QCom monitor, segement order assert removed, ticks removed, max limit and...

QCom monitor, segement order assert removed, ticks removed, max limit and purge of export buffer, configurable ack delay, segment size, export buffer quota

src/exe/rt_qmon/src/rt_qmon.c

@@ -88,10 +88,11 @@
 #else
 # define MAX_SEGSIZE	(1472 - sizeof(sHead))
 #endif
-#define RTT_RXMIN	500   /* ms */
-#define RTT_RXMAX	10000 /* ms */
+#define RTT_RXMIN	0.0500 /* seconds */
+#define RTT_RXMAX	10.000 /* seconds */
 #define RACK_TMO	1
-#define ALLOC_WARNING_LEVEL 500000
+#define EXPORT_BUF_WARN_LEVEL 300000
+#define EXPORT_BUF_QUOTA 600000
 
 #define max(Dragon,Eagle) ((Dragon) > (Eagle) ? (Dragon) : (Eagle))
 
@@ -161,7 +162,9 @@ struct sEseg {
   qdb_sBuffer		*bp;
   char			*p;
   int			bytes;
-  time_tClock		tmo;
+  pwr_tTime		tmo;
+  int			sent;
+  pwr_tTime		send_ts;
 };
 
 struct sIseg {
@@ -171,7 +174,7 @@ struct sIseg {
   int			ts_recv;
   sLink			*lp;
   pwr_tStatus		sts;
-  char			buff[MAX_SEGSIZE];
+  char			buff[1];
 };
 
 typedef union {
@@ -191,8 +194,9 @@ struct sLink {
   thread_s		thread;
   qdb_sBuffer		*bp;
   char			*p;
+  pwr_tDeltaTime	ack_delay;
+  unsigned int		exp_buf_quota;
   sIseg			tmo;
-  int			alloc_cnt;
 };
 
 
@@ -303,6 +307,8 @@ struct {
 } l;
 
 static pwr_tStatus qcom_sts = PWR__SRVSTARTUP;
+static int tics_per_sec = 0;
+static unsigned int qcom_segment_size = 8192 - sizeof(sHead);
 
 static void		cancel_links();
 static pwr_tBoolean     clean_insert (lst_sEntry*, sEseg*, pwr_tBoolean);
@@ -316,10 +322,10 @@ static sEseg*		eseg_alloc(thread_sMutex*);
 static sEseg*		eseg_build(qdb_sBuffer*);
 static void		eseg_free(sEseg*);
 static char*		event_string (eEvent);
-static pwr_tBoolean	expired(time_tClock);
+static pwr_tBoolean	expired(pwr_tTime*);
 static void*		export_thread();
 static sLink*		get_link(pwr_tNodeId, sMsg*);
-static time_tClock	get_tmo(sLink*, pwr_tBoolean);
+static void		get_tmo(sLink*, pwr_tBoolean, pwr_tTime*);
 static void*		import_thread();
 static void		ini_link_info (qdb_sLinkInfo*);
 static sIseg*		iseg_alloc();
@@ -328,6 +334,7 @@ static void		iseg_import(sLink*, sIseg*);
 static void		lack(sLink*, sIseg*);
 static void		link_active(sLink*);
 static void		link_connect(sLink*, sIseg*);
+static void		link_purge(sLink*);
 static void		link_disconnect(sLink*);
 static void		link_import(sLink*, sIseg*);
 static void		link_redisconnect(sLink*);
@@ -345,13 +352,13 @@ static void		set_recvmsg(sIseg*, sMsg*);
 static void		seg_send (sLink*, sEseg*);
 static void		set_sendmsg(sLink*, sEseg*, sMsg*);
 static void		start_rto(sLink*);
-static void		update_rtt(sLink*, sIseg*);
+static void		update_rtt(sLink*, sEseg*);
 static void		window_insert (sLink*, sEseg*);
 static void		window_remove (sLink*, sEseg*);
 static sEseg*		window_tmo (sLink*);
 static void		check_link_status ();
 static void		set_status (pwr_tStatus);
-static void		panic (void);
+static void		purge (void);
 
 
 int
@@ -387,6 +394,10 @@ main (int argc, char *argv[])
   qdb->thread_lock.cond_wait = thread_CondWait;
 #endif
   
+  qcom_segment_size = qdb->my_node->seg_size - sizeof(sHead);
+  if ( qcom_segment_size == 0)
+    qcom_segment_size = 8192 - sizeof(sHead);
+
   if (!qcom_CreateQ(&sts, &my_q, NULL, "events")) {
     errh_Fatal("qcom_CreateQ, %m", sts);
     errh_SetStatus( PWR__SRVTERM);
@@ -466,6 +477,30 @@ main (int argc, char *argv[])
   errh_Info("Exiting");
   exit(QCOM__SUCCESS);
 }
+
+static int export_alloc_check( sLink *lp)
+{
+  if ( lp->np->link.export_alloc_cnt > EXPORT_BUF_WARN_LEVEL && qcom_sts != QCOM__BUFFHIGH)
+    set_status(QCOM__BUFFHIGH);
+  if ( lp->np->link.export_alloc_cnt > lp->exp_buf_quota) {
+    link_purge(lp);	
+    return 1;
+  }
+  return 0;
+}
+
+static void export_alloc_sub( sEseg *sp)
+{
+  if ( !sp || !sp->lp)
+    return;
+
+  sp->lp->np->link.export_alloc_cnt -= sp->size;
+  if ( sp->lp->np->link.export_alloc_cnt < 0)
+    sp->lp->np->link.export_alloc_cnt = 0;
+  if ( qcom_sts == QCOM__BUFFHIGH && sp->lp->np->link.export_alloc_cnt < EXPORT_BUF_WARN_LEVEL )
+    set_status(PWR__SRUN);
+}
+
 
 static void
 cancel_links ()
@@ -529,7 +564,6 @@ clean_insert (
               if (sp->head.flags.b.first)
                 first = TRUE;
 	      if (first) {
-	        lst_Remove(NULL, &sp->c.le);
 	        eseg_free(sp);
 		li = se;
 	      } else {
@@ -573,6 +607,17 @@ clean_insert (
 
   /* Insert new item */
   
+#if 0
+  // Segment sequence test
+  static int no = 0;
+  if ( esp->head.flags.b.last) {
+    no++;
+    if ( no == 100) {
+      no = 0;
+      return ret_pend;      
+    }
+  }
+#endif
   lst_InsertPred(NULL, li, &esp->c.le, esp);
   
   return ret_pend;
@@ -759,14 +804,14 @@ eseg_build (
     for (
       msp = NULL, size = bp->b.info.size + sizeof(bp->b.info), ii = 0, p = (char *)&bp->b.info;
       size > 0;
-      ii++, p += MAX_SEGSIZE, size -= MAX_SEGSIZE
+      ii++, p += qcom_segment_size, size -= qcom_segment_size
     ) {
       sp = eseg_alloc(NULL);
       sp->p = p;
       sp->bp = bp;
       sp->lp = lp;
       sp->id = ii;
-      sp->size = MIN(size, MAX_SEGSIZE);
+      sp->size = MIN(size, qcom_segment_size);
       sp->head.flags.b.event = eEvent_user;
       sp->head.flags.b.bcast = bcast;
       if (msp == NULL) {
@@ -777,10 +822,7 @@ eseg_build (
 	sp->head.flags.b.middle = 1;
 	lst_InsertPred(NULL, &msp->le_seg, &sp->le_seg, sp);
       }
-      lp->alloc_cnt += sp->size;
-      if ( lp->alloc_cnt > ALLOC_WARNING_LEVEL && qcom_sts != QCOM__BUFFHIGH)
-	set_status(QCOM__BUFFHIGH);
-      //printf( "qmon alloc: %d  (%d)\n", sp->lp->alloc_cnt, sp->size);
+      lp->np->link.export_alloc_cnt += sp->size;
     }
 
     sp->head.flags.b.middle = 0;
@@ -812,6 +854,9 @@ eseg_build (
 	  }
 	  lst_InsertPred(NULL, &sp->le_bcast, &csp->le_bcast, csp);
 	  sp = lst_Succ(NULL, &sp->le_seg, NULL);
+
+	  csp->lp->np->link.export_alloc_cnt += csp->size;
+
 	} while (sp != msp);
       }
 
@@ -834,8 +879,7 @@ eseg_free (
 
   if (bcast) thread_MutexLock(&l.bcast); 
 
-  sp->lp->alloc_cnt -= sp->size;
-  //printf( "qmon free:  %d  (%d)\n", sp->lp->alloc_cnt, sp->size);
+  export_alloc_sub(sp);
 
   lst_Remove(NULL, &sp->c.le);
   if (lst_IsEmpty(NULL, &sp->le_bcast) && lst_IsEmpty(NULL, &sp->le_seg)) {
@@ -884,12 +928,13 @@ event_string (
 
 static pwr_tBoolean
 expired (
-  time_tClock clock
+  pwr_tTime* clock
 )
 {
-  int diff = clock - time_Clock(NULL, NULL);
+  pwr_tTime now;
 
-  return diff <= 0;
+  time_GetTimeMonotonic( &now);
+  return (time_Acomp( clock, &now) == -1);
 }
 
 static void *
@@ -924,6 +969,7 @@ export_thread ()
       } qdb_ScopeUnlock;
       continue;
     }
+    export_alloc_check( sp->lp);
 
     thread_MutexLock(&l.bcast);
 
@@ -971,15 +1017,17 @@ get_link (
   return lp;
 }
 
-static time_tClock
+static void
 get_tmo (
   sLink *lp,
-  pwr_tBoolean do_inc
+  pwr_tBoolean do_inc,
+  pwr_tTime *tmo
 )
 {
-  int rto;
+  float rto;
+  pwr_tTime now;
   
-  rto = (lp->np->link.rtt_rto + 0.5);
+  rto = lp->np->link.rtt_rto;
 
   if (rto > lp->np->link.rtt_rxmax) {
     rto = lp->np->link.rtt_rxmax;
@@ -988,10 +1036,11 @@ get_tmo (
   } else if (do_inc) {
     lp->np->link.rtt_rto *= 2;
     if (lp->np->link.rtt_rto > lp->np->link.rtt_rxmax)
-      lp->np->link.rtt_rto = lp->np->link.rtt_rxmax + 1;
+      lp->np->link.rtt_rto = lp->np->link.rtt_rxmax + 0.01;
   }
 
-  return (time_tClock) (time_Clock(NULL, NULL) + rto);
+  time_GetTimeMonotonic( &now);
+  time_Aadd( tmo, &now, time_FloatToD( 0, rto));
 }
 
 #if defined OS_VMS
@@ -1128,9 +1177,9 @@ iseg_alloc ()
 
   sp = lst_RemoveSucc(&l.iseg.mutex, &l.iseg.lh, NULL);
   if (sp == NULL) {
-    sp = (sIseg *)calloc(1, sizeof(*sp));
+    sp = (sIseg *)calloc(1, sizeof(*sp) + qcom_segment_size - 1);
     lst_Init(NULL, &sp->c.le, sp);
-    sp->size = sizeof(sp->buff);
+    sp->size = qcom_segment_size;
   }
 
   return sp;
@@ -1143,9 +1192,9 @@ iseg_free (
 {
 
   pwr_Assert(!lst_IsLinked(NULL, &sp->c.le));
-  memset(sp, 0, sizeof(*sp));
+  memset(sp, 0, sizeof(*sp) + qcom_segment_size - 1);
   lst_Init(NULL, &sp->c.le, sp);
-  sp->size = sizeof(sp->buff);
+  sp->size = qcom_segment_size;
   lst_InsertPred(&l.iseg.mutex, &l.iseg.lh, &sp->c.le, sp);
 
 }
@@ -1171,21 +1220,29 @@ iseg_import (
   }
 
   if (sp->head.flags.b.first) {
-    pwr_Assert(lp->bp == NULL);
+    // pwr_Assert(lp->bp == NULL);
     ip = (qdb_sInfo *)sp->buff;
     decode_info(ip);
     qdb_ScopeLock {
+      if ( lp->bp != NULL) {
+	lp->np->link.err_seg_seq++;
+	qdb_Free( NULL, lp->bp);
+      }
       lp->bp = qdb_Alloc(&sts, qdb_eBuffer_base, ip->size);
     } qdb_ScopeUnlock;
     if ( lp->bp == NULL) {
-      panic();
+      purge();
       return;
     }      
     lp->bp->c.flags.m |= ip->flags.m & qdb_mBuffer_maskExport;
     lp->p = (char *)&lp->bp->b.info;
   } else if (!sp->head.flags.b.first) {
-    pwr_Assert(lp->bp != NULL);
-    pwr_Assert(lp->p != NULL);
+    // pwr_Assert(lp->bp != NULL);
+    // pwr_Assert(lp->p != NULL);
+    if ( lp->bp == NULL) {
+      lp->np->link.err_seg_seq++;
+      return;
+    }
   }
 
   memcpy(lp->p, sp->buff, sp->size);
@@ -1232,7 +1289,8 @@ lack (
 	 it can be released.  */
 
       if (diff == 0 && isp->head.rack.ts == sp->head.lack.ts)
-	update_rtt(lp, isp);
+	//update_rtt(lp, isp);
+	update_rtt(lp, sp);
 
       window_remove(lp, sp);
 
@@ -1319,7 +1377,7 @@ link_disconnect (
   memset(&lp->np->link.rack, 0, sizeof(lp->np->link.rack));
   lp->np->link.seq = 0;
   start_rto(lp);
-  lp->np->link.rack_tmo = 0;
+  lp->np->link.rack_tmo = pwr_cNTime;
 
   /* Empty send list */
 
@@ -1358,12 +1416,51 @@ link_disconnect (
 
   lp->bp = NULL;
   lp->p = NULL;
-  lp->alloc_cnt = 0;
+  lp->np->link.export_alloc_cnt = 0;
   sp = create_connect(lp);
   lst_InsertSucc(NULL, &lp->lh_send, &sp->c.le, sp);
 
   check_link_status();
 }
+
+static void
+link_purge (
+  sLink *lp
+)
+{
+  sEseg *sp, *nsp;
+  int purge = 0;
+  int alloc_cnt = 0;
+
+  if (!lp->np->link.flags.b.connected) {
+    pwr_Assert(!lp->np->link.flags.b.active);
+    return;
+  }
+
+  /* Purge send list */
+
+  int i = 0;
+  for (
+    sp = lst_Succ(NULL, &lp->lh_send, NULL);
+    sp != NULL;
+    sp = nsp
+  ) {
+    nsp = lst_Succ(NULL, &sp->c.le, NULL);
+    if ( !purge && i > 50 && sp->head.flags.b.first) 
+      purge = 1;
+
+    if ( purge) {
+      eseg_free(sp);
+    }
+    else
+      alloc_cnt += sp->size;
+    i++;
+  }
+  printf( "link_purge: %d cnt %d (%d)\n", i, lp->np->link.export_alloc_cnt, alloc_cnt);
+  lp->np->link.export_alloc_cnt = alloc_cnt;
+  lp->np->link.export_purge_cnt++;
+}
+
 
 static void
 link_import (
@@ -1416,7 +1513,7 @@ link_redisconnect (
 
   lp->np->link.pending_rack = NO;
   start_rto(lp);
-  lp->np->link.rack_tmo = 0;
+  lp->np->link.rack_tmo = pwr_cNTime;
 
   sp = lst_Succ(NULL, &lp->lh_win, NULL);
   if (sp == NULL)
@@ -1424,7 +1521,7 @@ link_redisconnect (
   pwr_Assert(sp != NULL);
   pwr_Assert(sp->head.flags.b.event == eEvent_connect);
 
-  sp->tmo = 0;
+  sp->tmo = pwr_cNTime;
 
 }
 
@@ -1440,7 +1537,7 @@ link_send (
   } else if ((sp = pending_send(lp)) != NULL) {
     window_insert(lp, sp);
     seg_send(lp, sp);
-  } else if (lp->np->link.pending_rack && expired(lp->np->link.rack_tmo)) {
+  } else if (lp->np->link.pending_rack && expired(&lp->np->link.rack_tmo)) {
     send_ack(lp);
   }
 }
@@ -1504,28 +1601,35 @@ link_tmo (
   sLink *lp
 )
 {
-  int diff_send = 0;
-  int diff_rack = 0;
-  time_tClock clock = time_Clock(NULL, NULL);
-  time_tClock tmo = 0;
+  pwr_tDeltaTime diff_send = pwr_cNDeltaTime;
+  pwr_tDeltaTime diff_rack = pwr_cNDeltaTime;
+  pwr_tTime clock;
+  pwr_tDeltaTime tmo = pwr_cNDeltaTime;
   sEseg *sp;
 
+  time_GetTimeMonotonic( &clock);
+
   if (lst_Succ(NULL, &lp->lh_send, NULL) != NULL &&
       lp->np->link.win_count < lp->np->link.win_max)
     return time_ZeroD(&lp->np->link.timer);
   
   if (lp->np->link.pending_rack) {
-    diff_rack = lp->np->link.rack_tmo - clock;
-    diff_rack = MAX(0, diff_rack);
+    time_Adiff( &diff_rack, &lp->np->link.rack_tmo, &clock);
+    if ( time_Dcomp( &diff_rack, 0) == -1)
+      diff_rack = pwr_cNDeltaTime;
   }
 
   if ((sp = lst_Succ(NULL, &lp->lh_win, NULL)) != NULL) {
-    diff_send = sp->tmo - clock;
-    diff_send = MAX(0, diff_send);
+    time_Adiff( &diff_send, &sp->tmo, &clock);
+    if ( time_Dcomp( &diff_send, 0) == -1)
+      diff_send = pwr_cNDeltaTime;
   }
 
   if (lp->np->link.pending_rack && sp != NULL) {
-    tmo = MIN(diff_rack, diff_send);
+    if ( time_Dcomp( &diff_rack, &diff_send) == -1)
+      tmo = diff_rack;
+    else
+      tmo = diff_send;
   } else if (lp->np->link.pending_rack) {
     tmo = diff_rack;
   } else if (sp != NULL) {
@@ -1536,7 +1640,8 @@ link_tmo (
     return &lp->np->link.timer;
   }
   
-  return time_ClockToD(NULL, &lp->np->link.timer, tmo);
+  lp->np->link.timer = tmo;
+  return &lp->np->link.timer;
 }
 
 static sLink *
@@ -1548,8 +1653,8 @@ new_link (
   pwr_tStatus sts;
   sLink *lp;
   sEseg *sp;
-  static int tics_per_sec = 0;
-  int rtt_rxmin, rtt_rxmax;
+  float rtt_rxmin, rtt_rxmax;
+  float ack_delay;
 
   if (nid == qdb->my_node->nid) return NULL;
   if (nid == qdb->no_node->nid) return NULL;
@@ -1568,15 +1673,25 @@ new_link (
 
   pwr_Assert(lp->np != NULL);
 
-  rtt_rxmin = max( RTT_RXMIN, max(lp->np->min_resend_time,qdb->my_node->min_resend_time));
-  rtt_rxmax = max( RTT_RXMAX, max(lp->np->max_resend_time,qdb->my_node->max_resend_time));
+  rtt_rxmin = (float)(max(lp->np->min_resend_time,qdb->my_node->min_resend_time))/1000;
+  if ( rtt_rxmin == 0)
+    rtt_rxmin = RTT_RXMIN;
+  rtt_rxmax = (float)(max(lp->np->max_resend_time,qdb->my_node->max_resend_time))/1000;
+  if ( rtt_rxmax == 0)
+    rtt_rxmax = RTT_RXMAX;
+  ack_delay = max(lp->np->ack_delay,qdb->my_node->ack_delay);
+  time_FloatToD( &lp->ack_delay, qdb->my_node->ack_delay);
+  lp->exp_buf_quota = max(lp->np->export_buf_quota,qdb->my_node->export_buf_quota);
+  if ( lp->exp_buf_quota == 0)
+    lp->exp_buf_quota = EXPORT_BUF_QUOTA;    
+  lp->np->link.export_quota = lp->exp_buf_quota;
        
   que_Create(NULL, &lp->q_in);
   lst_Init(NULL, &lp->lh_send, NULL);
   lst_Init(NULL, &lp->lh_win, NULL);
   lp->np->link.win_max = 1;
-  lp->np->link.rtt_rxmax = (rtt_rxmax * tics_per_sec) / 1000;
-  lp->np->link.rtt_rxmin = (rtt_rxmin * tics_per_sec) / 1000;
+  lp->np->link.rtt_rxmax = rtt_rxmax;
+  lp->np->link.rtt_rxmin = rtt_rxmin;
   lp->tmo.c.action = eAction_tmo;
                                     
   if (mp != NULL) {
@@ -1779,12 +1894,13 @@ set_rack (
 
   if (sp->head.flags.b.resent) {
     lp->np->link.pending_rack = YES;
-    lp->np->link.rack_tmo = time_Clock(NULL, NULL);
+    time_GetTimeMonotonic( &lp->np->link.rack_tmo);
   } else if (lp->np->link.pending_rack) {
-    lp->np->link.rack_tmo = time_Clock(NULL, NULL);
+    time_GetTimeMonotonic( &lp->np->link.rack_tmo);
   } else {
     lp->np->link.pending_rack = YES;
-    lp->np->link.rack_tmo = time_Clock(NULL, NULL) + RACK_TMO; /* lp->rack_tmo; */
+    time_GetTimeMonotonic( &lp->np->link.rack_tmo);
+    time_Aadd( &lp->np->link.rack_tmo, &lp->np->link.rack_tmo, &lp->ack_delay);  /* lp->rack_tmo; */
   }
 
 }
@@ -1799,7 +1915,7 @@ set_recvmsg (
   mp->iov[0].iov_base = (char *) &mp->head;
   mp->iov[0].iov_len  = sizeof(mp->head);
   mp->iov[1].iov_base = (char *)sp->buff;
-  mp->iov[1].iov_len  = sizeof(sp->buff);
+  mp->iov[1].iov_len  = qcom_segment_size;
 
   memset(&mp->sa, 0, sizeof(mp->sa));
 
@@ -1879,10 +1995,12 @@ seg_send (
       start_rto(lp);
       sp->head.flags.b.resent = 1;
     }
-    sp->tmo = get_tmo(lp, YES);
+    get_tmo(lp, YES, &sp->tmo);
   } else {
-    sp->tmo = get_tmo(lp, NO);
+    get_tmo(lp, NO, &sp->tmo);
   }
+  sp->sent = 1;
+  time_GetTimeMonotonic( &sp->send_ts);
 
   sched_yield();
 }
@@ -1983,24 +2101,24 @@ start_rto (
 
   lp->np->link.rtt_rto = rto;
 }
-
+
 static void
 update_rtt (
   sLink *lp,
-  sIseg	*sp
+  sEseg	*sp
 )
 {
-  int diff;
-  double delta;
+  pwr_tDeltaTime dt;
+  float delta;
+  pwr_tTime now;
 
   if (sp->head.rack.seq == 0)
     return;
 
-  diff = sp->ts_recv - sp->head.rack.ts;
-  if (diff <= 0)
-    return;
+  time_GetTimeMonotonic( &now);
+  time_Adiff( &dt, &now, &sp->send_ts);
+  time_DToFloat( &lp->np->link.rtt_rtt, &dt);
   
-  lp->np->link.rtt_rtt = diff;
   delta = lp->np->link.rtt_rtt - lp->np->link.rtt_srtt;
   lp->np->link.rtt_srtt += delta / 8;
 
@@ -2043,7 +2161,7 @@ window_tmo (
 {
   sEseg *sp = lst_Succ(NULL, &lp->lh_win, NULL);
 
-  if (sp == NULL || !expired(sp->tmo))
+  if (sp == NULL || !expired(&sp->tmo))
     return NULL;
 
   return sp;
@@ -2087,12 +2205,12 @@ pwr_tStatus sts
 
 
 static void
-panic (void)
+purge (void)
 {
   pwr_tStatus sts;
   sLink *lp;
 
-  errh_Error("Panic, qdb pool exhausted");
   for (lp = tree_Minimum(&sts, l.links.table); lp != NULL; lp = tree_Successor(&sts, l.links.table, lp))
-    link_disconnect(lp);
+    link_purge(lp);
+  errh_Error("Links purged, qdb pool exhausted");
 }

src/lib/dtt/src/dtt_appl_rttsys_p49.dtt

@@ -2,13 +2,13 @@
 32 0 32 0 0 32 0 0 0 0 0 0 32 0 0 0 32 0 0 0 0 32 
 32 0 32 0 0 32 0 0 0 0 0 0 32 0 0 0 32 0 0 0 0 32 
 32 0 32 0 0 32 0 0 0 0 0 0 32 0 0 0 32 0 0 0 0 32 
-32 70 87 67 77 82 77 77 76 83 86 84 76 83 84 83 82 83 84 80 84 32 
-32 108 105 111 97 111 97 105 97 116 97 105 111 101 105 101 101 101 105 101 105 32 
-32 97 110 117 120 117 120 110 115 100 114 109 99 113 109 113 109 113 109 110 109 32 
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 32 0 32 0 115 105 110 110 0 97 0 0 107 32 112 0 99 32 112 0 0 32 
 32 0 32 0 105 112 100 100 0 116 0 0 32 110 0 0 107 110 0 0 0 32 
@@ -29,55 +29,55 @@
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 2 0 2 0 0 2 0 0 0 0 0 0 2 0 0 0 3 0 0 0 0 2 
 2 0 2 0 0 2 0 0 0 0 0 0 2 0 0 0 3 0 0 0 0 2 
 2 0 2 0 0 2 0 0 0 0 0 0 2 0 0 0 3 0 0 0 0 2 
@@ -109,8 +109,8 @@
 2 0 3 0 0 3 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 0 3 0 0 3 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 0 3 0 0 3 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
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 2 0 3 0 0 2 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 0 3 0 0 2 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 0 3 0 0 2 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
@@ -118,46 +118,46 @@
 2 0 3 0 0 2 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 0 3 0 0 2 0 0 0 0 0 0 3 0 0 0 3 0 0 0 0 3 
 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 2 2 2 3 
-2 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 
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-2 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 
-2 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 
-2 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 
-2 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 
-2 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 
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+2 0 0 0 0 0 3 0 0 0 2 0 0 0 0 0 0 0 0 0 0 2 
+2 0 0 0 0 0 3 0 0 0 2 0 0 0 0 0 0 0 0 0 0 2 
 
 *******************************************************************
 QCOM NODE
@@ -215,11 +215,11 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
-Declaration	INT
+Declaration	FLOAT
 x,y		21	6
 -------------------------------------------------------------------
 Number		5
@@ -230,11 +230,11 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
-Declaration	INT
+Declaration	FLOAT
 x,y		21	7
 -------------------------------------------------------------------
 Number		6
@@ -245,7 +245,7 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
@@ -260,7 +260,7 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
@@ -275,7 +275,7 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
@@ -290,7 +290,7 @@ Text/Dualpar	""
 Privileges	SYS
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
@@ -395,11 +395,11 @@ Text/Dualpar	""
 Privileges	NO
 Outputflags	
 Characters	11
-Decimals	0
+Decimals	5
 MaxLimit	0.000000
 MinLimit	0.000000
 Database	USER
-Declaration	INT
+Declaration	FLOAT
 x,y		23	20
 -------------------------------------------------------------------
 Number		17
@@ -450,6 +450,21 @@ x,y		62	3
 Number		20
 Text		"%"
 Type		UPDATE
+Parameter	QNODE_SEG_SIZE
+Text/Dualpar	""
+Privileges	NO
+Outputflags	
+Characters	11
+Decimals	0
+MaxLimit	0.000000
+MinLimit	0.000000
+Database	USER
+Declaration	INT
+x,y		62	4
+-------------------------------------------------------------------
+Number		21
+Text		"%"
+Type		UPDATE
 Parameter	QNODE_TIMER
 Text/Dualpar	""
 Privileges	NO
@@ -462,7 +477,7 @@ Database	USER
 Declaration	TIME
 x,y		62	5
 -------------------------------------------------------------------
-Number		21
+Number		22
 Text		"%"
 Type		UPDATE
 Parameter	QNODE_ERRRED
@@ -477,7 +492,7 @@ Database	USER
 Declaration	INT
 x,y		62	7
 -------------------------------------------------------------------
-Number		22
+Number		23
 Text		"%"
 Type		UPDATE
 Parameter	QNODE_ERRSEQ
@@ -492,6 +507,66 @@ Database	USER
 Declaration	INT
 x,y		62	8
 -------------------------------------------------------------------
+Number		24
+Text		"%"
+Type		UPDATE
+Parameter	QNODE_ERRSEGSEQ
+Text/Dualpar	""
+Privileges	NO
+Outputflags	
+Characters	11
+Decimals	0
+MaxLimit	0.000000
+MinLimit	0.000000
+Database	USER
+Declaration	INT
+x,y		62	9
+-------------------------------------------------------------------
+Number		25
+Text		"%"
+Type		UPDATE
+Parameter	QNODE_EXPORT_QUOTA
+Text/Dualpar	""
+Privileges	NO
+Outputflags	
+Characters	11
+Decimals	0
+MaxLimit	0.000000
+MinLimit	0.000000
+Database	USER
+Declaration	INT
+x,y		62	11
+-------------------------------------------------------------------
+Number		26
+Text		"%"
+Type		UPDATE
+Parameter	QNODE_EXPORT_ALLOC
+Text/Dualpar	""
+Privileges	NO
+Outputflags	
+Characters	11
+Decimals	0
+MaxLimit	0.000000
+MinLimit	0.000000
+Database	USER
+Declaration	INT
+x,y		62	12
+-------------------------------------------------------------------
+Number		27
+Text		"%"
+Type		UPDATE
+Parameter	QNODE_EXPORT_PURGE
+Text/Dualpar	""
+Privileges	NO
+Outputflags	
+Characters	11
+Decimals	0
+MaxLimit	0.000000
+MinLimit	0.000000
+Database	USER
+Declaration	INT
+x,y		62	13
+-------------------------------------------------------------------
 Number		200
 Text		"%"
 Type		UPDATE

src/lib/dtt/src/dtt_rttsys.c

@@ -12832,8 +12832,8 @@ int RTTSYS_QCOM_NODE( menu_ctx	ctx,
             menu_ptr->value_ptr = (char *) &np->link.pending_rack;
             menu_ptr++;
 
-            /* rack_tmo */
-            menu_ptr->value_ptr = (char *) &np->link.rack_tmo;
+            /* ack delay */
+            menu_ptr->value_ptr = (char *) &np->ack_delay;
             menu_ptr++;
 
             /* bus */
@@ -12864,6 +12864,10 @@ int RTTSYS_QCOM_NODE( menu_ctx	ctx,
 #endif
             menu_ptr++;
 
+            /* seg_size */
+            menu_ptr->value_ptr = (char *) &np->seg_size;
+            menu_ptr++;
+
             /* timer */
             menu_ptr->value_ptr = (char *) &np->link.timer;
             menu_ptr++;
@@ -12876,6 +12880,22 @@ int RTTSYS_QCOM_NODE( menu_ctx	ctx,
             menu_ptr->value_ptr = (char *) &np->link.err_seq;
             menu_ptr++;
 
+            /* err_seg_seq */
+            menu_ptr->value_ptr = (char *) &np->link.err_seg_seq;
+            menu_ptr++;
+
+            /* export_quota */
+            menu_ptr->value_ptr = (char *) &np->link.export_quota;
+            menu_ptr++;
+
+            /* export_alloc_cnt */
+            menu_ptr->value_ptr = (char *) &np->link.export_alloc_cnt;
+            menu_ptr++;
+
+            /* export_purge_cnt */
+            menu_ptr->value_ptr = (char *) &np->link.export_purge_cnt;
+            menu_ptr++;
+
             /* node name */
             menu_ptr->value_ptr = (char *) np->name;
             menu_ptr++;

src/lib/rt/src/rt_qcom.c

@@ -726,6 +726,10 @@ qcom_Put (
     bp = inPool(sts, pp->data);
     if (bp == NULL) {
       bp = qdb_Alloc(sts, qdb_eBuffer_base, pp->size);
+      if ( bp == NULL) {
+	*sts = QDB__QUOTAEXCEEDED;
+	break;
+      }
       memcpy((char *)(bp + 1), pp->data, pp->size);
     } else {
       /* check that this buffer is really owned by this process */

src/lib/rt/src/rt_qdb.h

@@ -443,8 +443,8 @@ typedef struct {
   qdb_mLink		flags;
   int			win_count;
   int			win_max;
-  int			rtt_rxmax;
-  int			rtt_rxmin;
+  float			rtt_rxmax;
+  float			rtt_rxmin;
   float			rtt_rtt;
   float			rtt_srtt;
   float			rtt_var;
@@ -453,12 +453,16 @@ typedef struct {
   qdb_sAck		rack;
   int			seq;
   pwr_tBoolean		pending_rack;
-  time_tClock		rack_tmo;
+  pwr_tTime		rack_tmo;
   qcom_tBus		bus;
   struct sockaddr_in	sa;
   pwr_tDeltaTime	timer;
+  int			export_quota;
+  int			export_alloc_cnt;
+  int			export_purge_cnt;
   int			err_red;
   int			err_seq;
+  int			err_seg_seq;
 } qdb_sLink;
 
 typedef char qdb_tQname[32];
@@ -677,6 +681,9 @@ typedef struct {
   qcom_eNodeConnection	connection;     /* Type of connection */
   pwr_tUInt32		min_resend_time;
   pwr_tUInt32		max_resend_time;
+  pwr_tUInt32		export_buf_quota;
+  pwr_tFloat32		ack_delay;
+  pwr_tUInt32		seg_size;
 } qdb_sNode;
 
 typedef struct {

src/lib/rt/src/rt_qini.c

@@ -74,6 +74,9 @@ addNode (
   np->connection = nep->connection;
   np->min_resend_time = nep->min_resend_time;
   np->max_resend_time = nep->max_resend_time;
+  np->export_buf_quota = nep->export_buf_quota;
+  np->ack_delay = nep->ack_delay;
+  np->seg_size = nep->seg_size;
 
   return np;
 }
@@ -121,7 +124,7 @@ qini_ParseFile (
 )
 {
   pwr_tStatus	sts = 1;
-  int		n;
+  int		n, n2;
   char		*s;
   char		buffer[256];
   int		error = 0;
@@ -129,9 +132,12 @@ qini_ParseFile (
   char		s_nid[80];
   char		s_naddr[80];
   char		s_port[80];
-  char		s_connection[80];
-  char		s_min_resend_time[80];
-  char		s_max_resend_time[80];
+  char		s_connection[10];
+  char		s_min_resend_time[20];
+  char		s_max_resend_time[20];
+  char		s_export_buf_quota[20];
+  char		s_ack_delay[20];
+  char		s_seg_size[20];
   pwr_tNodeId	nid;
   struct in_addr	naddr;
   qini_sNode	*nep;
@@ -144,8 +150,8 @@ qini_ParseFile (
       continue;
     }
 
-    n = sscanf(s, "%s %s %s %s %s %s %s", name, s_nid, s_naddr, s_port, s_connection,
-	       s_min_resend_time, s_max_resend_time);
+    n = sscanf(s, "%s %s %s %s %s %s %s %s %s %s", name, s_nid, s_naddr, s_port, s_connection,
+	       s_min_resend_time, s_max_resend_time, s_export_buf_quota, s_ack_delay, s_seg_size);
     if (n < 3) {
       errh_Error("error in line, <wrong number of arguments>, skip to next line.\n>> %s", s);
       (*errors)++;
@@ -215,6 +221,26 @@ qini_ParseFile (
     if (n > 4) nep->connection = atoi(s_connection);
     if (n > 5) nep->min_resend_time = atoi(s_min_resend_time);
     if (n > 6) nep->max_resend_time = atoi(s_max_resend_time);
+    if (n > 7) 
+      nep->export_buf_quota = atoi(s_export_buf_quota);
+    else
+      nep->export_buf_quota = 30000;
+    if (n > 8) {
+      n2 = sscanf( s_ack_delay, "%f", &nep->ack_delay);
+      if ( n2 != 1)
+	nep->ack_delay = 0.01;	
+    }
+    else
+      nep->ack_delay = 0.01;
+    if (n > 9) {
+      nep->seg_size = atoi(s_seg_size);
+      if ( nep->seg_size == 0)
+	nep->seg_size = 8192;
+    }
+    else
+      nep->seg_size = 8192;
+    
+
     memset(&arpreq, 0, sizeof(arpreq));
     memcpy(&arpreq.arp_pa.sa_data, &naddr, sizeof(naddr));
     inet_GetArpEntry(&sts, 0, &arpreq);

src/lib/rt/src/rt_qini.h

@@ -112,6 +112,9 @@ typedef struct {
   unsigned int		min_resend_time;
   unsigned int		max_resend_time;
   pwr_tBoolean		connect;
+  pwr_tUInt32		export_buf_quota;
+  pwr_tFloat32		ack_delay;
+  pwr_tUInt32		seg_size;
 } qini_sNode;    
 
 int			qini_ParseFile (FILE*, tree_sTable*, int*, int*, int*);

src/wbl/pwrb/src/pwrb_c_friendnodeconfig.wb_load

@@ -125,6 +125,28 @@ SObject pwrb:Class
           Attr TypeRef = "pwrs:Type-$Float32"
         EndBody
       EndObject
+      !/**
+      ! QCom max export buffer quota.
+      !*/
+      Object QComExportBufQuota $Attribute 9 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$UInt32"
+        EndBody
+      EndObject
+      !/**
+      ! QCom acknowledge delay time in seconds.
+      !*/
+      Object QComAckDelay $Attribute 15 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$Float32"
+        EndBody
+      EndObject
+    EndObject
+    Object Template FriendNodeConfig
+      Body RtBody
+        Attr QComExportBufQuota = 600000
+        Attr QComAckDelay = 0.002
+      EndBody
     EndObject
   EndObject
 EndSObject

src/wbl/pwrb/src/pwrb_c_nodeconfig.wb_load

@@ -197,6 +197,37 @@ SObject pwrb:Class
           Attr TypeRef = "pwrs:Type-$Float32"
         EndBody
       EndObject
+      !/**
+      ! QCom max export buffer quota.
+      !*/
+      Object QComExportBufQuota $Attribute 14 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$UInt32"
+        EndBody
+      EndObject
+      !/**
+      ! QCom acknowledge delay time in seconds.
+      !*/
+      Object QComAckDelay $Attribute 15 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$Float32"
+        EndBody
+      EndObject
+      !/**
+      ! QCom segment size.
+      !*/
+      Object QComSegmentSize $Attribute 16 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$UInt32"
+        EndBody
+      EndObject
+    EndObject
+    Object Template NodeConfig
+      Body RtBody
+        Attr QComExportBufQuota = 600000
+        Attr QComAckDelay = 0.002
+        Attr QComSegmentSize = 1500
+      EndBody
     EndObject
     Object PostCreate $DbCallBack
       Body SysBody

src/wbl/pwrb/src/pwrb_c_sevnodeconfig.wb_load

@@ -170,6 +170,37 @@ SObject pwrb:Class
           Attr TypeRef = "pwrs:Type-$Float32"
         EndBody
       EndObject
+      !/**
+      ! QCom max export buffer size.
+      !*/
+      Object QComExportBufQuota $Attribute 12 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$UInt32"
+        EndBody
+      EndObject
+      !/**
+      ! QCom acknowledge delay time in seconds.
+      !*/
+      Object QComAckDelay $Attribute 13 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$Float32"
+        EndBody
+      EndObject
+      !/**
+      ! QCom segment size.
+      !*/
+      Object QComSegmentSize $Attribute 14 
+        Body SysBody
+          Attr TypeRef = "pwrs:Type-$UInt32"
+        EndBody
+      EndObject
+    EndObject
+    Object Template SevNodeConfig
+      Body RtBody
+        Attr QComExportBufQuota = 600000
+        Attr QComAckDelay = 0.002
+        Attr QComSegmentSize = 1500
+      EndBody
     EndObject
     Object PostCreate $DbCallBack
       Body SysBody