diff --git a/config/localTemplate.go b/config/localTemplate.go
index ed6eb44931..b7adc39296 100644
--- a/config/localTemplate.go
+++ b/config/localTemplate.go
@@ -452,6 +452,10 @@ type Local struct {
 	// MaxAcctLookback sets the maximum lookback range for account states,
 	// i.e. the ledger can answer account states questions for the range Latest-MaxAcctLookback...Latest
 	MaxAcctLookback uint64 `version[23]:"4"`
+
+	// EnableUsageLog enables 10Hz log of CPU and RAM usage.
+	// Also adds 'algod_ram_usage` (number of bytes in use) to /metrics
+	EnableUsageLog bool `version[24]:"false"`
 }
 
 // DNSBootstrapArray returns an array of one or more DNS Bootstrap identifiers
diff --git a/config/local_defaults.go b/config/local_defaults.go
index 2aa46eef10..e810fa48c8 100644
--- a/config/local_defaults.go
+++ b/config/local_defaults.go
@@ -70,6 +70,7 @@ var defaultLocal = Local{
 	EnableRequestLogger:                        false,
 	EnableRuntimeMetrics:                       false,
 	EnableTopAccountsReporting:                 false,
+	EnableUsageLog:                             false,
 	EnableVerbosedTransactionSyncLogging:       false,
 	EndpointAddress:                            "127.0.0.1:0",
 	FallbackDNSResolverAddress:                 "",
diff --git a/installer/config.json.example b/installer/config.json.example
index 91b9413d97..0f8ea8350d 100644
--- a/installer/config.json.example
+++ b/installer/config.json.example
@@ -49,6 +49,7 @@
     "EnableRequestLogger": false,
     "EnableRuntimeMetrics": false,
     "EnableTopAccountsReporting": false,
+    "EnableUsageLog": false,
     "EnableVerbosedTransactionSyncLogging": false,
     "EndpointAddress": "127.0.0.1:0",
     "FallbackDNSResolverAddress": "",
diff --git a/logging/usage.go b/logging/usage.go
index 6646dfbaee..da668a72a7 100644
--- a/logging/usage.go
+++ b/logging/usage.go
@@ -18,12 +18,16 @@ package logging
 
 import (
 	"context"
+	"runtime"
 	"sync"
 	"time"
 
 	"github.com/algorand/go-algorand/util"
+	"github.com/algorand/go-algorand/util/metrics"
 )
 
+var ramUsageGauge = metrics.MakeGauge(metrics.MetricName{Name: "algod_ram_usage", Description: "number of bytes runtime.ReadMemStats().HeapInuse"})
+
 // UsageLogThread utility logging method
 func UsageLogThread(ctx context.Context, log Logger, period time.Duration, wg *sync.WaitGroup) {
 	if wg != nil {
@@ -34,6 +38,7 @@ func UsageLogThread(ctx context.Context, log Logger, period time.Duration, wg *s
 	var prevUtime, prevStime int64
 	var Utime, Stime int64
 	var prevTime time.Time
+	var mst runtime.MemStats
 
 	ticker := time.NewTicker(period)
 	hasPrev := false
@@ -48,13 +53,16 @@ func UsageLogThread(ctx context.Context, log Logger, period time.Duration, wg *s
 		now = time.Now()
 		Utime, Stime, _ = util.GetCurrentProcessTimes()
 
+		runtime.ReadMemStats(&mst)
+		ramUsageGauge.Set(float64(mst.HeapInuse))
+
 		if hasPrev {
 			userNanos := Utime - prevUtime
 			sysNanos := Stime - prevStime
 			wallNanos := now.Sub(prevTime).Nanoseconds()
 			userf := float64(userNanos) / float64(wallNanos)
 			sysf := float64(sysNanos) / float64(wallNanos)
-			log.Infof("usage nanos wall=%d user=%d sys=%d pu=%0.4f%% ps=%0.4f%%", wallNanos, userNanos, sysNanos, userf*100.0, sysf*100.0)
+			log.Infof("usage nanos wall=%d user=%d sys=%d pu=%0.4f%% ps=%0.4f%% inuse=%d", wallNanos, userNanos, sysNanos, userf*100.0, sysf*100.0, mst.HeapInuse)
 		} else {
 			hasPrev = true
 		}
diff --git a/node/node.go b/node/node.go
index a21aad1889..f93ac91530 100644
--- a/node/node.go
+++ b/node/node.go
@@ -385,8 +385,9 @@ func (node *AlgorandFullNode) startMonitoringRoutines() {
 	// Delete old participation keys
 	go node.oldKeyDeletionThread(node.ctx.Done())
 
-	// TODO re-enable with configuration flag post V1
-	//go logging.UsageLogThread(node.ctx, node.log, 100*time.Millisecond, nil)
+	if node.config.EnableUsageLog {
+		go logging.UsageLogThread(node.ctx, node.log, 100*time.Millisecond, nil)
+	}
 }
 
 // waitMonitoringRoutines waits for all the monitoring routines to exit. Note that
diff --git a/test/heapwatch/block_history.py b/test/heapwatch/block_history.py
index 29182e760a..ac5c631c4f 100644
--- a/test/heapwatch/block_history.py
+++ b/test/heapwatch/block_history.py
@@ -48,6 +48,19 @@ def addr_token_from_algod(algorand_data):
 def loads(blob):
     return msgpack.loads(base64.b64decode(blob), strict_map_key=False)
 
+def bstr(x):
+    if isinstance(x, bytes):
+        try:
+            return x.decode()
+        except:
+            pass
+    return x
+
+def obnice(ob):
+    if isinstance(ob, dict):
+        return {bstr(k):obnice(v) for k,v in ob.items()}
+    return ob
+
 def dumps(blob):
     return base64.b64encode(msgpack.dumps(blob))
 
@@ -180,8 +193,10 @@ def _loop_inner(self, lastround):
             if b is None:
                 print("got None nextblock. exiting")
                 return
-            b = msgpack.loads(b, strict_map_key=False)
+            b = msgpack.loads(b, strict_map_key=False, raw=True)
+            b = obnice(b)
             nowround = b['block'].get('rnd', 0)
+            logger.debug('r%d', nowround)
             if (lastround is not None) and (nowround != lastround + 1):
                 logger.info('round jump %d to %d', lastround, nowround)
             self._block_handler(b)
@@ -226,7 +241,7 @@ def main():
         logging.basicConfig(level=logging.INFO)
 
     algorand_data = args.algod or os.getenv('ALGORAND_DATA')
-    if not algorand_data and not (args.token and args.addr):
+    if not algorand_data and not ((args.token or args.headers) and args.addr):
         sys.stderr.write('must specify algod data dir by $ALGORAND_DATA or -d/--algod; OR --a/--addr and -t/--token\n')
         sys.exit(1)
 
diff --git a/test/heapwatch/block_history_plot.py b/test/heapwatch/block_history_plot.py
index 174c1dca11..73de45601a 100644
--- a/test/heapwatch/block_history_plot.py
+++ b/test/heapwatch/block_history_plot.py
@@ -119,8 +119,12 @@ def process(path, args):
     ax1.set_title('round time (seconds)')
     ax1.hist(list(filter(lambda x: x < 9,dtv[start:end])),bins=20)
 
-    ax2.set_title('TPS')
-    ax2.hist(tpsv[start:end],bins=20)
+    if args.rtime:
+        ax2.set_title('round time')
+        ax2.plot(dtv)
+    else:
+        ax2.set_title('TPS')
+        ax2.hist(tpsv[start:end],bins=20)
 
     ax3.set_title('txn/block')
     ax3.hist(txnv[start:end],bins=20)
@@ -152,6 +156,7 @@ def main():
     ap.add_argument('files', nargs='+')
     ap.add_argument('--all', default=False, action='store_true')
     ap.add_argument('--tps1', default=False, action='store_true')
+    ap.add_argument('--rtime',  default=False, action='store_true')
     ap.add_argument('--start', default=0, type=int, help='start round')
     args = ap.parse_args()
 
diff --git a/test/heapwatch/metrics_delta.py b/test/heapwatch/metrics_delta.py
index 70324c3c7c..3ec4939882 100644
--- a/test/heapwatch/metrics_delta.py
+++ b/test/heapwatch/metrics_delta.py
@@ -191,7 +191,7 @@ def __call__(self, ttr, nick):
     def blockinfo(self, curtime):
         return self.biByTime.get(curtime)
 
-    def byMsg(self):
+    def byMsg(self, html=False):
         txPSums = {}
         rxPSums = {}
         secondsSum = 0
@@ -209,10 +209,14 @@ def byMsg(self):
             dictMax(rxMax, ns.rxPLists)
             dictMin(txMin, ns.txPLists)
             dictMin(rxMin, ns.rxPLists)
-        lines = [
-            '{} nodes: {}'.format(len(nicks), nicks),
-            '\ttx B/s\trx B/s',
-        ]
+        nodesummary = '{} nodes: {}'.format(len(nicks), nicks)
+        lines = []
+        if html:
+            lines.append('<div>{}</div>'.format(nodesummary))
+            lines.append('<table><tr><th></th><th>tx B/s</th><th>rx B/s</th></tr>')
+        else:
+            lines.append(nodesummary)
+            lines.append('\ttx B/s\trx B/s')
         for msg, txB in txPSums.items():
             if msg not in rxPSums:
                 rxPSums[msg] = 0
@@ -220,7 +224,12 @@ def byMsg(self):
             txBps = txPSums.get(msg,0)/secondsSum
             if (txBps < 0.5) and (rxBps < 0.5):
                 continue
-            lines.append('{}\t{:.0f}\t{:.0f}'.format(msg, txBps, rxBps))
+            if html:
+                lines.append('<tr><td>{}</td><td>{:.0f}</td><td>{:.0f}</td></tr>'.format(msg, txBps, rxBps))
+            else:
+                lines.append('{}\t{:.0f}\t{:.0f}'.format(msg, txBps, rxBps))
+        if html:
+            lines.append('</table>')
         return '\n'.join(lines)
 
     def txPool(self):
@@ -242,6 +251,12 @@ def txPool(self):
         )
 
     def __str__(self):
+        return self.str(html=False)
+
+    def html(self):
+        return self.str(html=True)
+
+    def str(self, html=False):
         if not self.sumsCount:
             tps, txbps, rxbps = math.nan, math.nan, math.nan
             blockTimes = math.nan
@@ -256,9 +271,17 @@ def __str__(self):
             labelspace = self.label + " "
         if self.verifyMillis:
             verifyMillis = labelspace + 'verify ms ({:.0f}/{:.0f}/{:.0f})\n'.format(min(self.verifyMillis), meanOrZero(self.verifyMillis), max(self.verifyMillis))
+            if html:
+                verifyMillis = '<div>' + verifyMillis + '</div>'
         else:
             verifyMillis = ''
-        return '{byMsg}\n{verifyMillis}{labelspace}{txPool}\n{labelspace}summary: {TPS:0.2f} TPS, {bt:1.2f}s/block, tx {txBps}B/s, rx {rxBps}B/s'.format(labelspace=labelspace, byMsg=self.byMsg(), txPool=self.txPool(), TPS=tps, txBps=hunum(txbps), rxBps=hunum(rxbps), bt=blockTimes, verifyMillis=verifyMillis)
+        if html:
+            fmt = '{byMsg}\n{verifyMillis}<div>{labelspace}{txPool}</div>\n<div>{labelspace}summary: {TPS:0.2f} TPS, {bt:1.2f}s/block, tx {txBps}B/s, rx {rxBps}B/s</div>'
+            if self.label:
+                fmt = '<div class="lh">' + self.label + '</div>' + fmt
+        else:
+            fmt = '{byMsg}\n{verifyMillis}{labelspace}{txPool}\n{labelspace}summary: {TPS:0.2f} TPS, {bt:1.2f}s/block, tx {txBps}B/s, rx {rxBps}B/s'
+        return fmt.format(labelspace=labelspace, byMsg=self.byMsg(html), txPool=self.txPool(), TPS=tps, txBps=hunum(txbps), rxBps=hunum(rxbps), bt=blockTimes, verifyMillis=verifyMillis)
 
     def plot_pool(self, outpath):
         from matplotlib import pyplot as plt
@@ -330,6 +353,7 @@ def main():
     ap.add_argument('--mintps', default=None, type=float, help="records below min TPS don't add into summary")
     ap.add_argument('--deltas', default=None, help='path to write csv deltas')
     ap.add_argument('--report', default=None, help='path to write csv report')
+    ap.add_argument('--html-summary', default=None, help='path to write html summary')
     ap.add_argument('--nick-re', action='append', default=[], help='regexp to filter node names, may be repeated')
     ap.add_argument('--nick-lre', action='append', default=[], help='label:regexp to filter node names, may be repeated')
     ap.add_argument('--pool-plot-root', help='write to foo.svg and .png')
@@ -396,6 +420,9 @@ def main():
     if args.pool_plot_root:
         grsum.plot_pool(args.pool_plot_root)
 
+    htmlout = None
+    if args.html_summary:
+        htmlout = open(args.html_summary, 'wt')
     # maybe subprocess for stats across named groups
     if args.nick_re:
         # use each --nick-re=foo as a group
@@ -404,6 +431,8 @@ def main():
             process_nick_re(nre, filesByNick, nick_to_tfname, rsum, args, grsum)
             print(rsum)
             print('\n')
+            if htmlout:
+                htmlout.write(rsum.html())
         return 0
     if args.nick_lre:
         for lnre in args.nick_lre:
@@ -412,10 +441,14 @@ def main():
             process_nick_re(nre, filesByNick, nick_to_tfname, rsum, args, grsum)
             print(rsum)
             print('\n')
+            if htmlout:
+                htmlout.write(rsum.html())
         return 0
 
     # no filters, print global result
     print(grsum)
+    if htmlout:
+        htmlout.write(grsum.html())
     return 0
 
 def perProtocol(prefix, lists, sums, deltas, dt):
@@ -515,6 +548,8 @@ def process_files(self, args, nick=None, metrics_files=None, bisource=None):
                     self.biByTime[curtime] = bi
             if bi is None:
                 bi = bisource.get(curtime)
+            if bi is None:
+                logger.warning('%s no blockinfo', path)
             self.txPool.append(cur.get('algod_tx_pool_count{}'))
             #logger.debug('%s: %r', path, cur)
             verifyGood = cur.get('algod_agreement_proposal_verify_good{}')
diff --git a/test/testdata/configs/config-v24.json b/test/testdata/configs/config-v24.json
index 54bd0f9f2e..61b6b08e20 100644
--- a/test/testdata/configs/config-v24.json
+++ b/test/testdata/configs/config-v24.json
@@ -49,6 +49,7 @@
     "EnableRequestLogger": false,
     "EnableRuntimeMetrics": false,
     "EnableTopAccountsReporting": false,
+    "EnableUsageLog": false,
     "EnableVerbosedTransactionSyncLogging": false,
     "EndpointAddress": "127.0.0.1:0",
     "FallbackDNSResolverAddress": "",