fix memory usage (invalid block size)
diff --git a/BENCHMARKS.md b/BENCHMARKS.md
index a4466d5..4205a52 100644
--- a/BENCHMARKS.md
+++ b/BENCHMARKS.md
@@ -97,7 +97,7 @@ gzip 5M memory
## Benchmark on the Linux kernel
```
-bzip3 -e -b 32 linux.tar linux.tar.bz3 104.71s user 0.41s system 99% cpu 192M memory 1:45.16 total
+bzip3 -e -b 16 linux.tar linux.tar.bz3 104.71s user 0.41s system 99% cpu 100M memory 1:45.16 total
bzip2 -9 -k linux.tar 61.23s user 0.35s system 99% cpu 8M memory 1:01.58 total
gzip -9 -k linux.tar 43.08s user 0.35s system 99% cpu 4M memory 43.435 total
lzma -9 -k linux.tar 397.30s user 0.90s system 99% cpu 675M memory 6:38.28 total
