* [PATCH] f2fs: Introduce lifetime write IO statistics
@ 2016-01-26 3:16 ` Liu Shuoran
0 siblings, 0 replies; 5+ messages in thread
From: Liu Shuoran @ 2016-01-26 3:16 UTC (permalink / raw)
To: jaegeuk; +Cc: linux-kernel, linux-f2fs-devel
From: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
---
fs/f2fs/checkpoint.c | 14 ++++++++++++++
fs/f2fs/f2fs.h | 4 ++++
fs/f2fs/super.c | 34 ++++++++++++++++++++++++++++++++++
include/linux/f2fs_fs.h | 6 ++++++
4 files changed, 58 insertions(+)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 3842af9..15dfce9 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -921,6 +921,10 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
int cp_payload_blks = __cp_payload(sbi);
block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
bool invalidate = false;
+ struct super_block *sb = sbi->sb;
+ struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
+ __u64 kbytes_written;
+
/*
* This avoids to conduct wrong roll-forward operations and uses
@@ -1034,6 +1038,16 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
write_data_summaries(sbi, start_blk);
start_blk += data_sum_blocks;
+
+ /* Record write statistics in HOT_NODE*/
+ kbytes_written = sbi->kbytes_written;
+ if (sb->s_bdev->bd_part)
+ kbytes_written +=
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->sectors_written_start) >> 1);
+
+ seg_i->sum_blk->info.kbytes_written = cpu_to_le64(kbytes_written);
+
if (__remain_node_summaries(cpc->reason)) {
write_node_summaries(sbi, start_blk);
start_blk += NR_CURSEG_NODE_TYPE;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ff79054..7b1b5ba 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -844,6 +844,10 @@ struct f2fs_sb_info {
struct list_head s_list;
struct mutex umount_mutex;
unsigned int shrinker_run_no;
+
+ /* For write statistics */
+ unsigned long sectors_written_start;
+ unsigned long long kbytes_written;
};
static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 3bf990b..68674da 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -126,6 +126,20 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
return NULL;
}
+static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->sb;
+
+ if (!sb->s_bdev->bd_part)
+ return snprintf(buf, PAGE_SIZE, "0\n");
+
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (unsigned long long)(sbi->kbytes_written +
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->sectors_written_start) >> 1)));
+}
+
static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@@ -204,6 +218,9 @@ static struct f2fs_attr f2fs_attr_##_name = { \
f2fs_sbi_show, f2fs_sbi_store, \
offsetof(struct struct_name, elname))
+#define F2FS_GENERAL_RO_ATTR(name) \
+static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
+
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
@@ -220,6 +237,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
+F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@@ -239,6 +257,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(ra_nid_pages),
ATTR_LIST(cp_interval),
ATTR_LIST(idle_interval),
+ ATTR_LIST(lifetime_write_kbytes),
NULL,
};
@@ -766,6 +785,11 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
bool need_stop_gc = false;
bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
+ if (*flags & MS_RDONLY) {
+ set_opt(sbi, FASTBOOT);
+ set_sbi_flag(sbi, SBI_IS_DIRTY);
+ }
+
sync_filesystem(sb);
/*
@@ -1242,6 +1266,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
bool retry = true, need_fsck = false;
char *options = NULL;
int recovery, i, valid_super_block;
+ struct curseg_info *seg_i;
try_onemore:
err = -EINVAL;
@@ -1372,6 +1397,15 @@ try_onemore:
goto free_nm;
}
+ /* For write statistics */
+ seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
+ if (sb->s_bdev->bd_part)
+ sbi->sectors_written_start =
+ part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+
+ if(__exist_node_summaries(sbi))
+ sbi->kbytes_written = le64_to_cpu(seg_i->sum_blk->info.kbytes_written);
+
build_gc_manager(sbi);
/* get an inode for node space */
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index e59c3be..05ae034 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -387,6 +387,11 @@ struct sit_journal {
__u8 reserved[SIT_JOURNAL_RESERVED];
} __packed;
+struct f2fs_extra_info {
+ __le64 kbytes_written;
+ __u8 reserved[SUM_JOURNAL_SIZE - 10];
+} __packed;
+
/* 4KB-sized summary block structure */
struct f2fs_summary_block {
struct f2fs_summary entries[ENTRIES_IN_SUM];
@@ -398,6 +403,7 @@ struct f2fs_summary_block {
union {
struct nat_journal nat_j;
struct sit_journal sit_j;
+ struct f2fs_extra_info info;
};
struct summary_footer footer;
} __packed;
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH] f2fs: Introduce lifetime write IO statistics
@ 2016-01-26 3:16 ` Liu Shuoran
0 siblings, 0 replies; 5+ messages in thread
From: Liu Shuoran @ 2016-01-26 3:16 UTC (permalink / raw)
To: jaegeuk; +Cc: linux-kernel, linux-f2fs-devel
From: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
---
fs/f2fs/checkpoint.c | 14 ++++++++++++++
fs/f2fs/f2fs.h | 4 ++++
fs/f2fs/super.c | 34 ++++++++++++++++++++++++++++++++++
include/linux/f2fs_fs.h | 6 ++++++
4 files changed, 58 insertions(+)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 3842af9..15dfce9 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -921,6 +921,10 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
int cp_payload_blks = __cp_payload(sbi);
block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
bool invalidate = false;
+ struct super_block *sb = sbi->sb;
+ struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
+ __u64 kbytes_written;
+
/*
* This avoids to conduct wrong roll-forward operations and uses
@@ -1034,6 +1038,16 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
write_data_summaries(sbi, start_blk);
start_blk += data_sum_blocks;
+
+ /* Record write statistics in HOT_NODE*/
+ kbytes_written = sbi->kbytes_written;
+ if (sb->s_bdev->bd_part)
+ kbytes_written +=
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->sectors_written_start) >> 1);
+
+ seg_i->sum_blk->info.kbytes_written = cpu_to_le64(kbytes_written);
+
if (__remain_node_summaries(cpc->reason)) {
write_node_summaries(sbi, start_blk);
start_blk += NR_CURSEG_NODE_TYPE;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ff79054..7b1b5ba 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -844,6 +844,10 @@ struct f2fs_sb_info {
struct list_head s_list;
struct mutex umount_mutex;
unsigned int shrinker_run_no;
+
+ /* For write statistics */
+ unsigned long sectors_written_start;
+ unsigned long long kbytes_written;
};
static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 3bf990b..68674da 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -126,6 +126,20 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
return NULL;
}
+static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->sb;
+
+ if (!sb->s_bdev->bd_part)
+ return snprintf(buf, PAGE_SIZE, "0\n");
+
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (unsigned long long)(sbi->kbytes_written +
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->sectors_written_start) >> 1)));
+}
+
static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@@ -204,6 +218,9 @@ static struct f2fs_attr f2fs_attr_##_name = { \
f2fs_sbi_show, f2fs_sbi_store, \
offsetof(struct struct_name, elname))
+#define F2FS_GENERAL_RO_ATTR(name) \
+static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
+
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
@@ -220,6 +237,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
+F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@@ -239,6 +257,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(ra_nid_pages),
ATTR_LIST(cp_interval),
ATTR_LIST(idle_interval),
+ ATTR_LIST(lifetime_write_kbytes),
NULL,
};
@@ -766,6 +785,11 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
bool need_stop_gc = false;
bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
+ if (*flags & MS_RDONLY) {
+ set_opt(sbi, FASTBOOT);
+ set_sbi_flag(sbi, SBI_IS_DIRTY);
+ }
+
sync_filesystem(sb);
/*
@@ -1242,6 +1266,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
bool retry = true, need_fsck = false;
char *options = NULL;
int recovery, i, valid_super_block;
+ struct curseg_info *seg_i;
try_onemore:
err = -EINVAL;
@@ -1372,6 +1397,15 @@ try_onemore:
goto free_nm;
}
+ /* For write statistics */
+ seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
+ if (sb->s_bdev->bd_part)
+ sbi->sectors_written_start =
+ part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+
+ if(__exist_node_summaries(sbi))
+ sbi->kbytes_written = le64_to_cpu(seg_i->sum_blk->info.kbytes_written);
+
build_gc_manager(sbi);
/* get an inode for node space */
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index e59c3be..05ae034 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -387,6 +387,11 @@ struct sit_journal {
__u8 reserved[SIT_JOURNAL_RESERVED];
} __packed;
+struct f2fs_extra_info {
+ __le64 kbytes_written;
+ __u8 reserved[SUM_JOURNAL_SIZE - 10];
+} __packed;
+
/* 4KB-sized summary block structure */
struct f2fs_summary_block {
struct f2fs_summary entries[ENTRIES_IN_SUM];
@@ -398,6 +403,7 @@ struct f2fs_summary_block {
union {
struct nat_journal nat_j;
struct sit_journal sit_j;
+ struct f2fs_extra_info info;
};
struct summary_footer footer;
} __packed;
--
1.9.1
------------------------------------------------------------------------------
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] f2fs: Introduce lifetime write IO statistics
2016-01-26 3:16 ` Liu Shuoran
(?)
@ 2016-02-20 17:08 ` Pavel Machek
2016-02-22 1:12 ` Shuoran
-1 siblings, 1 reply; 5+ messages in thread
From: Pavel Machek @ 2016-02-20 17:08 UTC (permalink / raw)
To: Liu Shuoran; +Cc: jaegeuk, linux-kernel, linux-f2fs-devel
Hi!
> From: Shuoran Liu <liushuoran@huawei.com>
>
> Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
> Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -921,6 +921,10 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
> int cp_payload_blks = __cp_payload(sbi);
> block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
> bool invalidate = false;
> + struct super_block *sb = sbi->sb;
> + struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
> + __u64 kbytes_written;
> +
No need to __prefix in kernel.
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
> index e59c3be..05ae034 100644
> --- a/include/linux/f2fs_fs.h
> +++ b/include/linux/f2fs_fs.h
> @@ -387,6 +387,11 @@ struct sit_journal {
> __u8 reserved[SIT_JOURNAL_RESERVED];
> } __packed;
>
> +struct f2fs_extra_info {
> + __le64 kbytes_written;
> + __u8 reserved[SUM_JOURNAL_SIZE - 10];
> +} __packed;
> +
Unless this is exported to userspace, no need for __ here, either.
(Would it make sense to store bytes_written, as it is not going to
overflow, anyway?)
Is this going to be exported to userspace somehow?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] f2fs: Introduce lifetime write IO statistics
2016-02-20 17:08 ` Pavel Machek
@ 2016-02-22 1:12 ` Shuoran
0 siblings, 0 replies; 5+ messages in thread
From: Shuoran @ 2016-02-22 1:12 UTC (permalink / raw)
To: Pavel Machek; +Cc: jaegeuk, linux-kernel, linux-f2fs-devel
Hi Pavel,
On 2016/2/21 1:08, Pavel Machek wrote:
> Hi!
>
>> From: Shuoran Liu <liushuoran@huawei.com>
>>
>> Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
>> Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
>> --- a/fs/f2fs/checkpoint.c
>> +++ b/fs/f2fs/checkpoint.c
>> @@ -921,6 +921,10 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
>> int cp_payload_blks = __cp_payload(sbi);
>> block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
>> bool invalidate = false;
>> + struct super_block *sb = sbi->sb;
>> + struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
>> + __u64 kbytes_written;
>> +
> No need to __prefix in kernel.
There is a v2 version of the patch according to the suggestions of Kim
and Chao Yu, and is merged into the "dev" branch.
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
>> index e59c3be..05ae034 100644
>> --- a/include/linux/f2fs_fs.h
>> +++ b/include/linux/f2fs_fs.h
>> @@ -387,6 +387,11 @@ struct sit_journal {
>> __u8 reserved[SIT_JOURNAL_RESERVED];
>> } __packed;
>>
>> +struct f2fs_extra_info {
>> + __le64 kbytes_written;
>> + __u8 reserved[SUM_JOURNAL_SIZE - 10];
>> +} __packed;
>> +
> Unless this is exported to userspace, no need for __ here, either.
>
> (Would it make sense to store bytes_written, as it is not going to
> overflow, anyway?)
>
> Is this going to be exported to userspace somehow?
This stat is exposed to the sysfs interface. Since Ext4 is using kbytes
named "lifetime_kbytes_written", we tend to maintain compatibility in
case some upper level applications are using it. Besides, the
information is obtained from block layer in the unit of "sectors"(512
bytes). So it is not necessary to use bytes.
> Pavel
Regards,
Shuoran
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] f2fs: Introduce lifetime write IO statistics
@ 2016-02-22 1:12 ` Shuoran
0 siblings, 0 replies; 5+ messages in thread
From: Shuoran @ 2016-02-22 1:12 UTC (permalink / raw)
To: Pavel Machek; +Cc: jaegeuk, linux-kernel, linux-f2fs-devel
Hi Pavel,
On 2016/2/21 1:08, Pavel Machek wrote:
> Hi!
>
>> From: Shuoran Liu <liushuoran@huawei.com>
>>
>> Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
>> Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
>> --- a/fs/f2fs/checkpoint.c
>> +++ b/fs/f2fs/checkpoint.c
>> @@ -921,6 +921,10 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
>> int cp_payload_blks = __cp_payload(sbi);
>> block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
>> bool invalidate = false;
>> + struct super_block *sb = sbi->sb;
>> + struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
>> + __u64 kbytes_written;
>> +
> No need to __prefix in kernel.
There is a v2 version of the patch according to the suggestions of Kim
and Chao Yu, and is merged into the "dev" branch.
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
>> index e59c3be..05ae034 100644
>> --- a/include/linux/f2fs_fs.h
>> +++ b/include/linux/f2fs_fs.h
>> @@ -387,6 +387,11 @@ struct sit_journal {
>> __u8 reserved[SIT_JOURNAL_RESERVED];
>> } __packed;
>>
>> +struct f2fs_extra_info {
>> + __le64 kbytes_written;
>> + __u8 reserved[SUM_JOURNAL_SIZE - 10];
>> +} __packed;
>> +
> Unless this is exported to userspace, no need for __ here, either.
>
> (Would it make sense to store bytes_written, as it is not going to
> overflow, anyway?)
>
> Is this going to be exported to userspace somehow?
This stat is exposed to the sysfs interface. Since Ext4 is using kbytes
named "lifetime_kbytes_written", we tend to maintain compatibility in
case some upper level applications are using it. Besides, the
information is obtained from block layer in the unit of "sectors"(512
bytes). So it is not necessary to use bytes.
> Pavel
Regards,
Shuoran
------------------------------------------------------------------------------
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http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-02-22 1:13 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2016-01-26 3:16 [PATCH] f2fs: Introduce lifetime write IO statistics Liu Shuoran
2016-01-26 3:16 ` Liu Shuoran
2016-02-20 17:08 ` Pavel Machek
2016-02-22 1:12 ` Shuoran
2016-02-22 1:12 ` Shuoran
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