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LEANN/benchmarks/update/plot_bench_results.py
Andy Lee d4f5f2896f Faster Update (#148) 
* stash

* stash

* add std err in add and trace progress

* fix.

* docs

* style: format

* docs

* better figs

* better figs

* update results

* fotmat

---------

Co-authored-by: yichuan-w <yichuan-w@users.noreply.github.com>
2025-11-05 13:37:47 -08:00

646 lines
23 KiB
Python
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#!/usr/bin/env python3
"""
Plot latency bars from the benchmark CSV produced by
benchmarks/update/bench_hnsw_rng_recompute.py.
If you also provide an offline_vs_update.csv via --csv-right
(from benchmarks/update/bench_update_vs_offline_search.py), this script will
output a side-by-side figure:
- Left: ms/passage bars (four RNG scenarios).
- Right: seconds bars (Scenario A seq add+search vs Scenario B offline+search).
Usage:
uv run python benchmarks/update/plot_bench_results.py \
--csv benchmarks/update/bench_results.csv \
--out benchmarks/update/bench_latency_from_csv.png
The script selects the latest run_id in the CSV and plots four bars for
the default scenarios:
- baseline
- no_cache_baseline
- disable_forward_rng
- disable_forward_and_reverse_rng
If multiple rows exist per scenario for that run_id, the script averages
their latency_ms_per_passage values.
"""
import argparse
import csv
from collections import defaultdict
from pathlib import Path
DEFAULT_SCENARIOS = [
"no_cache_baseline",
"baseline",
"disable_forward_rng",
"disable_forward_and_reverse_rng",
]
SCENARIO_LABELS = {
"baseline": "+ Cache",
"no_cache_baseline": "Naive \n Recompute",
"disable_forward_rng": "+ w/o \n Fwd RNG",
"disable_forward_and_reverse_rng": "+ w/o \n Bwd RNG",
}
# Paper-style colors and hatches for scenarios
SCENARIO_STYLES = {
"no_cache_baseline": {"edgecolor": "dimgrey", "hatch": "/////"},
"baseline": {"edgecolor": "#63B8B6", "hatch": "xxxxx"},
"disable_forward_rng": {"edgecolor": "green", "hatch": "....."},
"disable_forward_and_reverse_rng": {"edgecolor": "tomato", "hatch": "\\\\\\\\\\"},
}
def load_latest_run(csv_path: Path):
rows = []
with csv_path.open("r", encoding="utf-8") as f:
reader = csv.DictReader(f)
for row in reader:
rows.append(row)
if not rows:
raise SystemExit("CSV is empty: no rows to plot")
# Choose latest run_id lexicographically (YYYYMMDD-HHMMSS)
run_ids = [r.get("run_id", "") for r in rows]
latest = max(run_ids)
latest_rows = [r for r in rows if r.get("run_id", "") == latest]
if not latest_rows:
# Fallback: take last 4 rows
latest_rows = rows[-4:]
latest = latest_rows[-1].get("run_id", "unknown")
return latest, latest_rows
def aggregate_latency(rows):
acc = defaultdict(list)
for r in rows:
sc = r.get("scenario", "")
try:
val = float(r.get("latency_ms_per_passage", "nan"))
except ValueError:
continue
acc[sc].append(val)
avg = {k: (sum(v) / len(v) if v else 0.0) for k, v in acc.items()}
return avg
def _auto_cap(values: list[float]) -> float | None:
if not values:
return None
sorted_vals = sorted(values, reverse=True)
if len(sorted_vals) < 2:
return None
max_v, second = sorted_vals[0], sorted_vals[1]
if second <= 0:
return None
# If the tallest bar dwarfs the second by 2.5x+, cap near the second
if max_v >= 2.5 * second:
return second * 1.1
return None
def _add_break_marker(ax, y, rel_x0=0.02, rel_x1=0.98, size=0.02):
# Draw small diagonal ticks near left/right to signal cap
x0, x1 = rel_x0, rel_x1
ax.plot([x0 - size, x0 + size], [y + size, y - size], transform=ax.transAxes, color="k", lw=1)
ax.plot([x1 - size, x1 + size], [y + size, y - size], transform=ax.transAxes, color="k", lw=1)
def _fmt_ms(v: float) -> str:
if v >= 1000:
return f"{v / 1000:.1f}k"
return f"{v:.1f}"
def main():
# Set LaTeX style for paper figures (matching paper_fig.py)
import matplotlib.pyplot as plt
plt.rcParams["font.family"] = "Helvetica"
plt.rcParams["ytick.direction"] = "in"
plt.rcParams["hatch.linewidth"] = 1.5
plt.rcParams["font.weight"] = "bold"
plt.rcParams["axes.labelweight"] = "bold"
plt.rcParams["text.usetex"] = True
ap = argparse.ArgumentParser(description=__doc__)
ap.add_argument(
"--csv",
type=Path,
default=Path("benchmarks/update/bench_results.csv"),
help="Path to results CSV (defaults to bench_results.csv)",
)
ap.add_argument(
"--out",
type=Path,
default=Path("add_ablation.pdf"),
help="Output image path",
)
ap.add_argument(
"--csv-right",
type=Path,
default=Path("benchmarks/update/offline_vs_update.csv"),
help="Optional: offline_vs_update.csv to render right subplot (A vs B)",
)
ap.add_argument(
"--cap-y",
type=float,
default=None,
help="Cap Y-axis at this ms value; bars above are hatched and annotated.",
)
ap.add_argument(
"--no-auto-cap",
action="store_true",
help="Disable auto-cap heuristic when --cap-y is not provided.",
)
ap.add_argument(
"--broken-y",
action="store_true",
default=True,
help="Use a broken Y-axis (two stacked axes with a gap). Overrides --cap-y unless both provided.",
)
ap.add_argument(
"--lower-cap-y",
type=float,
default=None,
help="Lower axes upper bound for broken Y (ms). Default = 1.1x second-highest.",
)
ap.add_argument(
"--upper-start-y",
type=float,
default=None,
help="Upper axes lower bound for broken Y (ms). Default = 1.2x second-highest.",
)
args = ap.parse_args()
latest_run, latest_rows = load_latest_run(args.csv)
avg = aggregate_latency(latest_rows)
try:
import matplotlib.pyplot as plt
except Exception as e:
raise SystemExit(f"matplotlib not available: {e}")
scenarios = DEFAULT_SCENARIOS
values = [avg.get(name, 0.0) for name in scenarios]
labels = [SCENARIO_LABELS.get(name, name) for name in scenarios]
colors = ["#4e79a7", "#f28e2c", "#e15759", "#76b7b2"]
# If right CSV is provided, build side-by-side figure
if args.csv_right is not None:
try:
right_rows_all = []
with args.csv_right.open("r", encoding="utf-8") as f:
rreader = csv.DictReader(f)
right_rows_all = list(rreader)
if right_rows_all:
r_latest = max(r.get("run_id", "") for r in right_rows_all)
right_rows = [r for r in right_rows_all if r.get("run_id", "") == r_latest]
else:
r_latest = None
right_rows = []
except Exception:
r_latest = None
right_rows = []
a_total = 0.0
b_makespan = 0.0
for r in right_rows:
sc = (r.get("scenario", "") or "").strip().upper()
if sc == "A":
try:
a_total = float(r.get("total_time_s", 0.0))
except Exception:
pass
elif sc == "B":
try:
b_makespan = float(r.get("makespan_s", 0.0))
except Exception:
pass
import matplotlib.pyplot as plt
from matplotlib import gridspec
# Left subplot (reuse current style, with optional cap)
cap = args.cap_y
if cap is None and not args.no_auto_cap:
cap = _auto_cap(values)
x = list(range(len(labels)))
if args.broken_y:
# Use broken axis for left subplot
# Auto-adjust width ratios: left has 4 bars, right has 2 bars
fig = plt.figure(figsize=(4.8, 1.8)) # Scaled down to 80%
gs = gridspec.GridSpec(
2, 2, height_ratios=[1, 3], width_ratios=[1.5, 1], hspace=0.08, wspace=0.35
)
ax_left_top = fig.add_subplot(gs[0, 0])
ax_left_bottom = fig.add_subplot(gs[1, 0], sharex=ax_left_top)
ax_right = fig.add_subplot(gs[:, 1])
# Determine break points
s = sorted(values, reverse=True)
second = s[1] if len(s) >= 2 else (s[0] if s else 0.0)
lower_cap = (
args.lower_cap_y if args.lower_cap_y is not None else second * 1.4
) # Increased to show more range
upper_start = (
args.upper_start_y
if args.upper_start_y is not None
else max(second * 1.5, lower_cap * 1.02)
)
ymax = (
max(values) * 1.90 if values else 1.0
) # Increase headroom to 1.90 for text label and tick range
# Draw bars on both axes
ax_left_bottom.bar(x, values, color=colors[: len(labels)], width=0.8)
ax_left_top.bar(x, values, color=colors[: len(labels)], width=0.8)
# Set limits
ax_left_bottom.set_ylim(0, lower_cap)
ax_left_top.set_ylim(upper_start, ymax)
# Annotate values (convert ms to s)
values_s = [v / 1000.0 for v in values]
lower_cap_s = lower_cap / 1000.0
upper_start_s = upper_start / 1000.0
ymax_s = ymax / 1000.0
ax_left_bottom.set_ylim(0, lower_cap_s)
ax_left_top.set_ylim(upper_start_s, ymax_s)
# Redraw bars with s values (paper style: white fill + colored edge + hatch)
ax_left_bottom.clear()
ax_left_top.clear()
bar_width = 0.50 # Reduced for wider spacing between bars
for i, (scenario_name, v) in enumerate(zip(scenarios, values_s)):
style = SCENARIO_STYLES.get(scenario_name, {"edgecolor": "black", "hatch": ""})
# Draw in bottom axis for all bars
ax_left_bottom.bar(
i,
v,
width=bar_width,
color="white",
edgecolor=style["edgecolor"],
hatch=style["hatch"],
linewidth=1.2,
)
# Only draw in top axis if the bar is tall enough to reach the upper range
if v > upper_start_s:
ax_left_top.bar(
i,
v,
width=bar_width,
color="white",
edgecolor=style["edgecolor"],
hatch=style["hatch"],
linewidth=1.2,
)
ax_left_bottom.set_ylim(0, lower_cap_s)
ax_left_top.set_ylim(upper_start_s, ymax_s)
for i, v in enumerate(values_s):
if v <= lower_cap_s:
ax_left_bottom.text(
i,
v + lower_cap_s * 0.02,
f"{v:.2f}",
ha="center",
va="bottom",
fontsize=8,
fontweight="bold",
)
else:
ax_left_top.text(
i,
v + (ymax_s - upper_start_s) * 0.02,
f"{v:.2f}",
ha="center",
va="bottom",
fontsize=8,
fontweight="bold",
)
# Hide spines between axes
ax_left_top.spines["bottom"].set_visible(False)
ax_left_bottom.spines["top"].set_visible(False)
ax_left_top.tick_params(
labeltop=False, labelbottom=False, bottom=False
) # Hide tick marks
ax_left_bottom.xaxis.tick_bottom()
ax_left_bottom.tick_params(top=False) # Hide top tick marks
# Draw break marks (matching paper_fig.py style)
d = 0.015
kwargs = {
"transform": ax_left_top.transAxes,
"color": "k",
"clip_on": False,
"linewidth": 0.8,
"zorder": 10,
}
ax_left_top.plot((-d, +d), (-d, +d), **kwargs)
ax_left_top.plot((1 - d, 1 + d), (-d, +d), **kwargs)
kwargs.update({"transform": ax_left_bottom.transAxes})
ax_left_bottom.plot((-d, +d), (1 - d, 1 + d), **kwargs)
ax_left_bottom.plot((1 - d, 1 + d), (1 - d, 1 + d), **kwargs)
ax_left_bottom.set_xticks(x)
ax_left_bottom.set_xticklabels(labels, rotation=0, fontsize=7)
# Don't set ylabel here - will use fig.text for alignment
ax_left_bottom.tick_params(axis="y", labelsize=10)
ax_left_top.tick_params(axis="y", labelsize=10)
# Add subtle grid for better readability
ax_left_bottom.grid(axis="y", alpha=0.3, linestyle="--", linewidth=0.5)
ax_left_top.grid(axis="y", alpha=0.3, linestyle="--", linewidth=0.5)
ax_left_top.set_title("Single Add Operation", fontsize=11, pad=10, fontweight="bold")
# Set x-axis limits to match bar width with right subplot
ax_left_bottom.set_xlim(-0.6, 3.6)
ax_left_top.set_xlim(-0.6, 3.6)
ax_left = ax_left_bottom # for compatibility
else:
# Regular side-by-side layout
fig, (ax_left, ax_right) = plt.subplots(1, 2, figsize=(8.4, 3.15))
if cap is not None:
show_vals = [min(v, cap) for v in values]
bars = ax_left.bar(x, show_vals, color=colors[: len(labels)], width=0.8)
for i, (val, show) in enumerate(zip(values, show_vals)):
if val > cap:
bars[i].set_hatch("//")
ax_left.text(
i, cap * 1.02, _fmt_ms(val), ha="center", va="bottom", fontsize=9
)
else:
ax_left.text(
i,
show + max(1.0, 0.01 * (cap or show)),
_fmt_ms(val),
ha="center",
va="bottom",
fontsize=9,
)
ax_left.set_ylim(0, cap * 1.10)
_add_break_marker(ax_left, y=0.98)
ax_left.set_xticks(x)
ax_left.set_xticklabels(labels, rotation=0, fontsize=10)
else:
ax_left.bar(x, values, color=colors[: len(labels)], width=0.8)
for i, v in enumerate(values):
ax_left.text(i, v + 1.0, _fmt_ms(v), ha="center", va="bottom", fontsize=9)
ax_left.set_xticks(x)
ax_left.set_xticklabels(labels, rotation=0, fontsize=10)
ax_left.set_ylabel("Latency (ms per passage)")
max_initial = latest_rows[0].get("max_initial", "?")
max_updates = latest_rows[0].get("max_updates", "?")
ax_left.set_title(
f"HNSW RNG (run {latest_run}) | init={max_initial}, upd={max_updates}"
)
# Right subplot (A vs B, seconds) - paper style
r_labels = ["Sequential", "Delayed \n Add+Search"]
r_values = [a_total or 0.0, b_makespan or 0.0]
r_styles = [
{"edgecolor": "#59a14f", "hatch": "xxxxx"},
{"edgecolor": "#edc948", "hatch": "/////"},
]
# 2 bars, centered with proper spacing
xr = [0, 1]
bar_width = 0.50 # Reduced for wider spacing between bars
for i, (v, style) in enumerate(zip(r_values, r_styles)):
ax_right.bar(
xr[i],
v,
width=bar_width,
color="white",
edgecolor=style["edgecolor"],
hatch=style["hatch"],
linewidth=1.2,
)
for i, v in enumerate(r_values):
max_v = max(r_values) if r_values else 1.0
offset = max(0.0002, 0.02 * max_v)
ax_right.text(
xr[i],
v + offset,
f"{v:.2f}",
ha="center",
va="bottom",
fontsize=8,
fontweight="bold",
)
ax_right.set_xticks(xr)
ax_right.set_xticklabels(r_labels, rotation=0, fontsize=7)
# Don't set ylabel here - will use fig.text for alignment
ax_right.tick_params(axis="y", labelsize=10)
# Add subtle grid for better readability
ax_right.grid(axis="y", alpha=0.3, linestyle="--", linewidth=0.5)
ax_right.set_title("Batched Add Operation", fontsize=11, pad=10, fontweight="bold")
# Set x-axis limits to match left subplot's bar width visually
# Accounting for width_ratios=[1.5, 1]:
# Left: 4 bars, xlim(-0.6, 3.6), range=4.2, physical_width=1.5*unit
# bar_width_visual = 0.72 * (1.5*unit / 4.2)
# Right: 2 bars, need same visual width
# 0.72 * (1.0*unit / range_right) = 0.72 * (1.5*unit / 4.2)
# range_right = 4.2 / 1.5 = 2.8
# For bars at 0, 1: padding = (2.8 - 1) / 2 = 0.9
ax_right.set_xlim(-0.9, 1.9)
# Set y-axis limit with headroom for text labels
if r_values:
max_v = max(r_values)
ax_right.set_ylim(0, max_v * 1.15)
# Format y-axis to avoid scientific notation
ax_right.ticklabel_format(style="plain", axis="y")
plt.tight_layout()
# Add aligned ylabels using fig.text (after tight_layout)
# Get the vertical center of the entire figure
fig_center_y = 0.5
# Left ylabel - closer to left plot
left_x = 0.05
fig.text(
left_x,
fig_center_y,
"Latency (s)",
va="center",
rotation="vertical",
fontsize=11,
fontweight="bold",
)
# Right ylabel - closer to right plot
right_bbox = ax_right.get_position()
right_x = right_bbox.x0 - 0.07
fig.text(
right_x,
fig_center_y,
"Latency (s)",
va="center",
rotation="vertical",
fontsize=11,
fontweight="bold",
)
plt.savefig(args.out, bbox_inches="tight", pad_inches=0.05)
# Also save PDF for paper
pdf_out = args.out.with_suffix(".pdf")
plt.savefig(pdf_out, bbox_inches="tight", pad_inches=0.05)
print(f"Saved: {args.out}")
print(f"Saved: {pdf_out}")
return
# Broken-Y mode
if args.broken_y:
import matplotlib.pyplot as plt
fig, (ax_top, ax_bottom) = plt.subplots(
2,
1,
sharex=True,
figsize=(7.5, 6.75),
gridspec_kw={"height_ratios": [1, 3], "hspace": 0.08},
)
# Determine default breaks from second-highest
s = sorted(values, reverse=True)
second = s[1] if len(s) >= 2 else (s[0] if s else 0.0)
lower_cap = args.lower_cap_y if args.lower_cap_y is not None else second * 1.1
upper_start = (
args.upper_start_y
if args.upper_start_y is not None
else max(second * 1.2, lower_cap * 1.02)
)
ymax = max(values) * 1.10 if values else 1.0
x = list(range(len(labels)))
ax_bottom.bar(x, values, color=colors[: len(labels)], width=0.8)
ax_top.bar(x, values, color=colors[: len(labels)], width=0.8)
# Limits
ax_bottom.set_ylim(0, lower_cap)
ax_top.set_ylim(upper_start, ymax)
# Annotate values
for i, v in enumerate(values):
if v <= lower_cap:
ax_bottom.text(
i, v + lower_cap * 0.02, _fmt_ms(v), ha="center", va="bottom", fontsize=9
)
else:
ax_top.text(i, v, _fmt_ms(v), ha="center", va="bottom", fontsize=9)
# Hide spines between axes and draw diagonal break marks
ax_top.spines["bottom"].set_visible(False)
ax_bottom.spines["top"].set_visible(False)
ax_top.tick_params(labeltop=False) # don't put tick labels at the top
ax_bottom.xaxis.tick_bottom()
# Diagonal lines at the break (matching paper_fig.py style)
d = 0.015
kwargs = {
"transform": ax_top.transAxes,
"color": "k",
"clip_on": False,
"linewidth": 0.8,
"zorder": 10,
}
ax_top.plot((-d, +d), (-d, +d), **kwargs) # top-left diagonal
ax_top.plot((1 - d, 1 + d), (-d, +d), **kwargs) # top-right diagonal
kwargs.update({"transform": ax_bottom.transAxes})
ax_bottom.plot((-d, +d), (1 - d, 1 + d), **kwargs) # bottom-left diagonal
ax_bottom.plot((1 - d, 1 + d), (1 - d, 1 + d), **kwargs) # bottom-right diagonal
ax_bottom.set_xticks(x)
ax_bottom.set_xticklabels(labels, rotation=0, fontsize=10)
ax = ax_bottom # for labeling below
else:
cap = args.cap_y
if cap is None and not args.no_auto_cap:
cap = _auto_cap(values)
plt.figure(figsize=(5.4, 3.15))
ax = plt.gca()
if cap is not None:
show_vals = [min(v, cap) for v in values]
bars = []
for i, (_label, val, show) in enumerate(zip(labels, values, show_vals)):
bar = ax.bar(i, show, color=colors[i], width=0.8)
bars.append(bar[0])
# Hatch and annotate when capped
if val > cap:
bars[-1].set_hatch("//")
ax.text(i, cap * 1.02, f"{_fmt_ms(val)}", ha="center", va="bottom", fontsize=9)
else:
ax.text(
i,
show + max(1.0, 0.01 * (cap or show)),
f"{_fmt_ms(val)}",
ha="center",
va="bottom",
fontsize=9,
)
ax.set_ylim(0, cap * 1.10)
_add_break_marker(ax, y=0.98)
ax.legend([bars[1]], ["capped"], fontsize=8, frameon=False, loc="upper right") if any(
v > cap for v in values
) else None
ax.set_xticks(range(len(labels)))
ax.set_xticklabels(labels, fontsize=11, fontweight="bold")
else:
ax.bar(labels, values, color=colors[: len(labels)])
for idx, val in enumerate(values):
ax.text(
idx,
val + 1.0,
f"{_fmt_ms(val)}",
ha="center",
va="bottom",
fontsize=10,
fontweight="bold",
)
ax.set_xticklabels(labels, fontsize=11, fontweight="bold")
# Try to extract some context for title
max_initial = latest_rows[0].get("max_initial", "?")
max_updates = latest_rows[0].get("max_updates", "?")
if args.broken_y:
fig.text(
0.02,
0.5,
"Latency (s)",
va="center",
rotation="vertical",
fontsize=11,
fontweight="bold",
)
fig.suptitle(
"Add Operation Latency",
fontsize=11,
y=0.98,
fontweight="bold",
)
plt.tight_layout(rect=(0.03, 0.04, 1, 0.96))
else:
plt.ylabel("Latency (s)", fontsize=11, fontweight="bold")
plt.title("Add Operation Latency", fontsize=11, fontweight="bold")
plt.tight_layout()
plt.savefig(args.out, bbox_inches="tight", pad_inches=0.05)
# Also save PDF for paper
pdf_out = args.out.with_suffix(".pdf")
plt.savefig(pdf_out, bbox_inches="tight", pad_inches=0.05)
print(f"Saved: {args.out}")
print(f"Saved: {pdf_out}")
if __name__ == "__main__":
main()
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