From e78d6859f7001b859bf7bacdc87c8da31f2f89e4 Mon Sep 17 00:00:00 2001 From: klensy Date: Tue, 23 Jan 2024 11:46:19 +0300 Subject: [PATCH] reduce bufreader size from default(8kb) to 1kb Headers WAY less than 1kb anyway, so this can be improved more? before ==18725== Total: 429,769,246 bytes in 957,259 blocks ==18725== At t-gmax: 8,058,316 bytes in 3,502 blocks ==18725== At t-end: 3,045,261 bytes in 1,097 blocks ==18725== Reads: 431,872,599 bytes ==18725== Writes: 214,738,653 bytes after ==49344== Total: 201,418,575 bytes in 957,174 blocks ==49344== At t-gmax: 7,937,250 bytes in 3,310 blocks ==49344== At t-end: 3,035,637 bytes in 1,076 blocks ==49344== Reads: 431,607,448 bytes ==49344== Writes: 210,731,540 bytes --- src/tools/compiletest/src/header.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs index e70e01e8757e..7c65e37119de 100644 --- a/src/tools/compiletest/src/header.rs +++ b/src/tools/compiletest/src/header.rs @@ -650,7 +650,7 @@ fn iter_header_extra( let comment = if testfile.extension().is_some_and(|e| e == "rs") { "//" } else { "#" }; - let mut rdr = BufReader::new(rdr); + let mut rdr = BufReader::with_capacity(1024, rdr); let mut ln = String::new(); let mut line_number = 0;