From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 19/19] block: Adjust cache sizes
Date: Tue, 3 Apr 2018 09:48:51 +0200 [thread overview]
Message-ID: <20180403074851.5411-20-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20180403074851.5411-1-s.hauer@pengutronix.de>
Use four times more cache entries and divide the memory for each entry
by four. This lowers the linear read throughput somewhat but increases
the access speed for filesystems.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
common/block.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/common/block.c b/common/block.c
index 55d8d1637e..219b943afc 100644
--- a/common/block.c
+++ b/common/block.c
@@ -36,7 +36,7 @@ struct chunk {
struct list_head list;
};
-#define BUFSIZE (PAGE_SIZE * 16)
+#define BUFSIZE (PAGE_SIZE * 4)
/*
* Write all dirty chunks back to the device
@@ -361,7 +361,7 @@ int blockdevice_register(struct block_device *blk)
debug("%s: rdbufsize: %d blockbits: %d blkmask: 0x%08x\n", __func__, blk->rdbufsize, blk->blockbits,
blk->blkmask);
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < 32; i++) {
struct chunk *chunk = xzalloc(sizeof(*chunk));
chunk->data = dma_alloc(BUFSIZE);
chunk->num = i;
--
2.16.1
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prev parent reply other threads:[~2018-04-03 7:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-03 7:48 [PATCH 00/19] Add Linux dcache implementation Sascha Hauer
2018-04-03 7:48 ` [PATCH 01/19] rename file_operations -> cdev_operations Sascha Hauer
2018-04-03 7:48 ` [PATCH 02/19] ubifs: remove dead code Sascha Hauer
2018-04-03 7:48 ` [PATCH 03/19] ubifs: Remove Linux struct definitions we already have Sascha Hauer
2018-04-03 7:48 ` [PATCH 04/19] ubifs: remove dead code Sascha Hauer
2018-04-03 7:48 ` [PATCH 05/19] fs: Add super_operations Sascha Hauer
2018-04-03 7:48 ` [PATCH 06/19] fs: Move mem_write/mem_read to devfs-core Sascha Hauer
2018-04-03 7:48 ` [PATCH 07/19] fs: Cleanup whitespace damage Sascha Hauer
2018-04-03 7:48 ` [PATCH 08/19] fs: Fix finding correct directory for mkdir/rmdir Sascha Hauer
2018-04-03 7:48 ` [PATCH 09/19] glob: do not unnecessarily opendir() a directory Sascha Hauer
2018-04-03 7:48 ` [PATCH 10/19] ls: Do not depend on normalise_path() Sascha Hauer
2018-04-03 7:48 ` [PATCH 11/19] loadenv: " Sascha Hauer
2018-04-03 7:48 ` [PATCH 12/19] fs: dcache implementation Sascha Hauer
2018-04-03 7:48 ` [PATCH 13/19] fs: ramfs: Switch to " Sascha Hauer
2018-04-03 7:48 ` [PATCH 14/19] fs: devfs: " Sascha Hauer
2018-04-03 7:48 ` [PATCH 15/19] fs: ext4: " Sascha Hauer
2018-04-03 7:48 ` [PATCH 16/19] fs: ubifs: " Sascha Hauer
2018-04-03 7:48 ` [PATCH 17/19] fs: nfs: " Sascha Hauer
2018-04-03 7:48 ` [PATCH 18/19] fs: tftp: " Sascha Hauer
2018-05-18 11:54 ` Philipp Zabel
2018-05-22 7:12 ` Sascha Hauer
2018-05-22 8:21 ` Philipp Zabel
2018-04-03 7:48 ` Sascha Hauer [this message]
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