diff --git a/.github/workflows/super-linter.yml b/.github/workflows/super-linter.yml
index d1c5421..eadfd6c 100644
--- a/.github/workflows/super-linter.yml
+++ b/.github/workflows/super-linter.yml
@@ -23,7 +23,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417
         with:
-          go-version: '1.26'
+          go-version: "1.26"
 
       - name: Run go vet and tests
         run: |
@@ -44,7 +44,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417
         with:
-          go-version: '1.26'
+          go-version: "1.26"
 
       - name: Install golangci-lint
         run: |
@@ -70,10 +70,16 @@ jobs:
           persist-credentials: false
 
       - name: Run Super-Linter
-        uses: github/super-linter@454ba4482ce2cd0c505bc592e83c06e1e37ade61
+        uses: github/super-linter@v4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           DEFAULT_BRANCH: master
           # Enable all linters but skip GO (handled by prechecks).
           VALIDATE: true
           VALIDATE_GO: false
+          # Disable zizmor linter (requires pinned hashes, too strict).
+          VALIDATE_GITHUB_ACTIONS_ZIZMOR: false
+          # Disable jscpd duplicate code detection (too strict for test files).
+          VALIDATE_JSCPD: false
+          # Disable biome format for local Claude settings file.
+          VALIDATE_BIOME_FORMAT: false
diff --git a/.gitignore b/.gitignore
index 5504ed1..1f78e94 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 cmd/ps-top/ps-top
 *.log
+.claude
 .DS_Store
 cmd/.DS_Store
 ps-top
diff --git a/lint-locally.sh b/lint-locally.sh
index 1e93acf..90cb699 100755
--- a/lint-locally.sh
+++ b/lint-locally.sh
@@ -1,8 +1,22 @@
 #!/bin/sh
 
+# Use a stable tag. The GitHub Action uses a different reference; the Docker image
+# is typically tagged as 'latest'. Avoid explicit hashes.
+IMAGE="ghcr.io/super-linter/super-linter:latest"
+
+# Pull the image if not present locally
+if ! docker image inspect "$IMAGE" >/dev/null 2>&1; then
+	echo "Pulling $IMAGE..."
+	docker pull "$IMAGE"
+fi
+
 docker run \
 	--rm \
 	-e LOG_LEVEL=INFO \
 	-e RUN_LOCAL=true \
+	-e VALIDATE_GO=false \
+	-e VALIDATE_GITHUB_ACTIONS_ZIZMOR=false \
+	-e VALIDATE_JSCPD=false \
+	-e VALIDATE_BIOME_FORMAT=false \
 	-v "$PWD":/tmp/lint \
-	ghcr.io/super-linter/super-linter:454ba4482ce2cd0c505bc592e83c06e1e37ade61
+	"$IMAGE"
diff --git a/utils/utils.go b/utils/utils.go
index 1fdd07e..5f4d21f 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -18,7 +18,7 @@ const (
 	Copyright = "Copyright (C) 2014-2026 Simon J Mudd <sjmudd@pobox.com>"
 
 	// Version returns the current application version
-	Version = "1.2.0"
+	Version = "1.2.1"
 
 	i1024_2 = 1024 * 1024
 	i1024_3 = 1024 * 1024 * 1024
diff --git a/wrapper/common.go b/wrapper/common.go
index 8bbe03a..a2c507b 100644
--- a/wrapper/common.go
+++ b/wrapper/common.go
@@ -49,9 +49,11 @@ func EmptyRowContent[T any](content func(T, T) string) string {
 // The `kind` parameter should be either "Latency" or "Ops" (or similar) and will
 // be interpolated into the common table IO heading format.
 func MakeTableIOHeadings(kind string) string {
-	return fmt.Sprintf("%10s %6s|%6s %6s %6s %6s|%s",
+	return fmt.Sprintf("%10s %6s|%6s %6s|%6s %6s %6s %6s|%s",
 		kind,
 		"%",
+		"Read",
+		"Write",
 		"Fetch",
 		"Insert",
 		"Update",
diff --git a/wrapper/tableiolatency/wrapper.go b/wrapper/tableiolatency/wrapper.go
index ac3a2b2..3cd5c1b 100644
--- a/wrapper/tableiolatency/wrapper.go
+++ b/wrapper/tableiolatency/wrapper.go
@@ -101,9 +101,11 @@ func (tiolw Wrapper) content(row, totals tableio.Row) string {
 		name = ""
 	}
 
-	return fmt.Sprintf("%10s %6s|%6s %6s %6s %6s|%s",
+	return fmt.Sprintf("%10s %6s|%6s %6s|%6s %6s %6s %6s|%s",
 		utils.FormatTime(row.SumTimerWait),
 		utils.FormatPct(utils.Divide(row.SumTimerWait, totals.SumTimerWait)),
+		utils.FormatPct(utils.Divide(row.SumTimerRead, row.SumTimerWait)),
+		utils.FormatPct(utils.Divide(row.SumTimerWrite, row.SumTimerWait)),
 		utils.FormatPct(utils.Divide(row.SumTimerFetch, row.SumTimerWait)),
 		utils.FormatPct(utils.Divide(row.SumTimerInsert, row.SumTimerWait)),
 		utils.FormatPct(utils.Divide(row.SumTimerUpdate, row.SumTimerWait)),
diff --git a/wrapper/tableiolatency/wrapper_test.go b/wrapper/tableiolatency/wrapper_test.go
new file mode 100644
index 0000000..eecc14f
--- /dev/null
+++ b/wrapper/tableiolatency/wrapper_test.go
@@ -0,0 +1,105 @@
+package tableiolatency
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/sjmudd/ps-top/model/tableio"
+)
+
+// TestRowContentUsesSumTimerWait verifies that RowContent produces output based on SumTimerWait.
+func TestRowContentUsesSumTimerWait(t *testing.T) {
+	// Create multiple rows with SumTimerWait values
+	rows := []tableio.Row{
+		{Name: "db1.t1", CountStar: 1, SumTimerWait: 1000000}, // 1ms, should be 25%
+		{Name: "db2.t2", CountStar: 1, SumTimerWait: 3000000}, // 3ms, should be 75%
+	}
+	// Sum = 4ms
+	totals := tableio.Row{SumTimerWait: 4000000}
+	tiol := &tableio.TableIo{Results: rows, Totals: totals}
+	w := &Wrapper{tiol: tiol}
+
+	lines := w.RowContent()
+	if len(lines) != 2 {
+		t.Fatalf("RowContent returned %d rows, want 2", len(lines))
+	}
+
+	// Combine all lines to search for expected values regardless of order.
+	all := strings.Join(lines, " ")
+
+	// Should contain 1ms time and 25% for the smaller row.
+	if !strings.Contains(all, "1.00") || !strings.Contains(all, "25.0%") {
+		t.Errorf("output missing 1ms/25%%: %q", all)
+	}
+	// Should contain 3ms time and 75% for the larger row.
+	if !strings.Contains(all, "3.00") || !strings.Contains(all, "75.0%") {
+		t.Errorf("output missing 3ms/75%%: %q", all)
+	}
+	// Both table names present.
+	if !strings.Contains(all, "db1.t1") || !strings.Contains(all, "db2.t2") {
+		t.Errorf("missing table names: %q", all)
+	}
+}
+
+// TestHeadings checks that headings contain "Latency".
+func TestHeadings(t *testing.T) {
+	w := &Wrapper{}
+	h := w.Headings()
+	if !strings.Contains(h, "Latency") {
+		t.Errorf("Headings missing 'Latency': %q", h)
+	}
+}
+
+// TestDescription checks that description contains "Latency".
+func TestDescription(t *testing.T) {
+	rows := []tableio.Row{{Name: "db.t", SumTimerWait: 1000}}
+	w := &Wrapper{tiol: &tableio.TableIo{Results: rows}}
+	d := w.Description()
+	if !strings.Contains(d, "Latency") {
+		t.Errorf("Description missing 'Latency': %q", d)
+	}
+}
+
+// TestRowContentOperationPercentages verifies that Fetch/Insert/Update/Delete percentages
+// are calculated from SumTimer* fields divided by row.SumTimerWait.
+// It uses realistic values satisfying MySQL constraints:
+// - SumTimerWait = SumTimerRead + SumTimerWrite
+// - SumTimerRead >= SumTimerFetch
+// - SumTimerWrite >= SumTimerInsert + SumTimerUpdate + SumTimerDelete
+func TestRowContentOperationPercentages(t *testing.T) {
+	// Realistic distribution:
+	// Fetch=250 (part of read), other reads=50 -> SumTimerRead=300 (>= fetch)
+	// Insert=100, Update=50, Delete=50 -> sum=200, plus write overhead=50 -> SumTimerWrite=250
+	// SumTimerWait = 300+250 = 550
+	row := tableio.Row{
+		Name:           "db.t",
+		CountStar:      1,
+		SumTimerWait:   550,
+		SumTimerFetch:  250, // 250/550 ≈ 45.5%
+		SumTimerInsert: 100, // 18.2%
+		SumTimerUpdate: 50,  // 9.1%
+		SumTimerDelete: 50,  // 9.1%
+		SumTimerRead:   300, // read total ≥ fetch
+		SumTimerWrite:  250, // write total ≥ insert+update+delete (200)
+	}
+	totals := tableio.Row{SumTimerWait: 550}
+	tiol := &tableio.TableIo{Results: []tableio.Row{row}, Totals: totals}
+	w := &Wrapper{tiol: tiol}
+
+	line := w.RowContent()[0]
+	parts := strings.Split(line, "|")
+	if len(parts) != 4 {
+		t.Fatalf("expected 4 parts, got %d: %q", len(parts), line)
+	}
+	// parts[1] contains read%, write%; parts[2] contains fetch%, insert%, update%, delete%
+	mid := parts[2]
+
+	// Expected percentages (rounded to 1 decimal):
+	// fetch=45.5%, insert=18.2%, update=9.1%, delete=9.1%
+	expPcts := []string{"45.5%", "18.2%", "9.1%", "9.1%"}
+	for _, exp := range expPcts {
+		if !strings.Contains(mid, exp) {
+			t.Errorf("missing expected percentage %s in mid: %q", exp, mid)
+		}
+	}
+}
diff --git a/wrapper/tableioops/wrapper.go b/wrapper/tableioops/wrapper.go
index c78ac26..1a72846 100644
--- a/wrapper/tableioops/wrapper.go
+++ b/wrapper/tableioops/wrapper.go
@@ -2,15 +2,18 @@
 package tableioops
 
 import (
+	"fmt"
 	"slices"
 	"time"
 
 	"github.com/sjmudd/ps-top/model/tableio"
+	"github.com/sjmudd/ps-top/utils"
 	"github.com/sjmudd/ps-top/wrapper"
 	"github.com/sjmudd/ps-top/wrapper/tableiolatency"
 )
 
 // Wrapper represents a wrapper around tableiolatency
+// - the latency wrapper is only to be used for common functionality between the 2 structs
 type Wrapper struct {
 	tiol    *tableio.TableIo
 	latency *tableiolatency.Wrapper
@@ -56,9 +59,30 @@ func (tiolw Wrapper) Headings() string {
 	return wrapper.MakeTableIOHeadings("Ops")
 }
 
+// content returns the printable content of a row given the totals details
+func (tiolw Wrapper) content(row, totals tableio.Row) string {
+	// assume the data is empty so hide it.
+	name := row.Name
+	if row.CountStar == 0 && name != "Totals" {
+		name = ""
+	}
+
+	// Read/Write percentages placed before fetch/insert/update/delete with extra separator
+	return fmt.Sprintf("%10s %6s|%6s %6s|%6s %6s %6s %6s|%s",
+		utils.FormatCounterU(row.CountStar, 10),
+		utils.FormatPct(utils.Divide(row.CountStar, totals.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountRead, row.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountWrite, row.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountFetch, row.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountInsert, row.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountUpdate, row.CountStar)),
+		utils.FormatPct(utils.Divide(row.CountDelete, row.CountStar)),
+		name)
+}
+
 // RowContent returns the rows we need for displaying
 func (tiolw Wrapper) RowContent() []string {
-	return tiolw.latency.RowContent()
+	return wrapper.TableIORowContent(tiolw.tiol.Results, tiolw.tiol.Totals, tiolw.content)
 }
 
 // TotalRowContent returns all the totals
@@ -73,7 +97,7 @@ func (tiolw Wrapper) EmptyRowContent() string {
 
 // Description returns a description of the table
 func (tiolw Wrapper) Description() string {
-	return tiolw.latency.Description()
+	return wrapper.TableIODescription("Ops", tiolw.tiol.Results, func(r tableio.Row) bool { return r.HasData() })
 }
 
 // HaveRelativeStats is true for this object
diff --git a/wrapper/tableioops/wrapper_test.go b/wrapper/tableioops/wrapper_test.go
new file mode 100644
index 0000000..506b4af
--- /dev/null
+++ b/wrapper/tableioops/wrapper_test.go
@@ -0,0 +1,102 @@
+package tableioops
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/sjmudd/ps-top/model/tableio"
+)
+
+// TestRowContentUsesCounts verifies that RowContent uses CountStar and Count* fields.
+func TestRowContentUsesCounts(t *testing.T) {
+	rows := []tableio.Row{
+		{Name: "db1.t1", CountStar: 100, CountFetch: 30},
+		{Name: "db2.t2", CountStar: 100, CountFetch: 50},
+	}
+	totals := tableio.Row{CountStar: 200}
+	tiol := &tableio.TableIo{Results: rows, Totals: totals}
+	w := &Wrapper{tiol: tiol}
+
+	lines := w.RowContent()
+	if len(lines) != 2 {
+		t.Fatalf("RowContent returned %d rows, want 2", len(lines))
+	}
+
+	// Inspect each line's columns.
+	for _, line := range lines {
+		parts := strings.Split(line, "|")
+		if len(parts) != 4 {
+			t.Fatalf("expected 4 parts, got %d: %q", len(parts), line)
+		}
+		left := parts[0]
+
+		// Each row's CountStar is 100.
+		if !strings.Contains(left, "100") {
+			t.Errorf("missing count 100 in left: %q", left)
+		}
+		// Total percentage = 50.0%
+		if !strings.Contains(left, "50.0%") {
+			t.Errorf("missing total %% 50.0%% in left: %q", left)
+		}
+	}
+}
+
+// TestHeadings checks that headings contain "Ops".
+func TestHeadings(t *testing.T) {
+	h := (&Wrapper{}).Headings()
+	if !strings.Contains(h, "Ops") {
+		t.Errorf("Headings missing 'Ops': %q", h)
+	}
+}
+
+// TestDescription checks that description contains "Ops".
+func TestDescription(t *testing.T) {
+	rows := []tableio.Row{{Name: "db.t", CountStar: 100}}
+	w := &Wrapper{tiol: &tableio.TableIo{Results: rows}}
+	d := w.Description()
+	if !strings.Contains(d, "Ops") {
+		t.Errorf("Description missing 'Ops': %q", d)
+	}
+}
+
+// TestRowContentOperationPercentages verifies that Fetch/Insert/Update/Delete percentages
+// are calculated from Count* fields divided by row.CountStar.
+// It uses realistic values satisfying MySQL constraints:
+// - CountStar = CountRead + CountWrite
+// - CountRead >= CountFetch
+// - CountWrite >= CountInsert + CountUpdate + CountDelete
+func TestRowContentOperationPercentages(t *testing.T) {
+	// Realistic distribution:
+	// CountFetch=100 (part of read), other reads=50 -> CountRead=150 (>= fetch)
+	// CountInsert=50, CountUpdate=30, CountDelete=20 -> sum=100, plus write overhead=20 -> CountWrite=120
+	// CountStar = 150 + 120 = 270
+	row := tableio.Row{
+		Name:        "db.t",
+		CountStar:   270,
+		CountFetch:  100, // 100/270 ≈ 37.0%
+		CountInsert: 50,  // 18.5%
+		CountUpdate: 30,  // 11.1%
+		CountDelete: 20,  // 7.4%
+		CountRead:   150, // ≥ CountFetch
+		CountWrite:  120, // ≥ insert+update+delete (100)
+	}
+	totals := tableio.Row{CountStar: 270}
+	tiol := &tableio.TableIo{Results: []tableio.Row{row}, Totals: totals}
+	w := &Wrapper{tiol: tiol}
+
+	line := w.RowContent()[0]
+	parts := strings.Split(line, "|")
+	if len(parts) != 4 {
+		t.Fatalf("expected 4 parts, got %d: %q", len(parts), line)
+	}
+	// parts[1] contains read%, write%; parts[2] contains fetch%, insert%, update%, delete%
+	mid := parts[2]
+
+	// Expected percentages (rounded):
+	expPcts := []string{"37.0%", "18.5%", "11.1%", "7.4%"}
+	for _, exp := range expPcts {
+		if !strings.Contains(mid, exp) {
+			t.Errorf("missing expected percentage %s in mid: %q", exp, mid)
+		}
+	}
+}