Re: Initial report on F2FS filesystem performance

From: Namjae Jeon
Date: Tue Oct 16 2012 - 02:58:52 EST


Hello.

Would you share the result about random read ?

Thanks.

2012/10/16, Sooman Jeong <77smart@xxxxxxxxxxxxx>:
>
> This is a brief summary of our initial filesystem performance study of f2fs
> against existing two filesystems in linux: EXT4, NILFS2, and f2fs.
>
>
> * test platform
> ãi) Desktop PC : Linux 3.6.1 (f2fs patched), Intel i5-2500 @3.3GHz
> quad-core, 8GB RAM, Transcend 16GB class 10 micro SD card
> ãii) Galaxy-S3 : Linux 3.0.15 (f2fs ported), Android 4.0.4, DVFS turned off,
> Transcend 16GB class 10 micro SD card
>
>
> * experiment 1: buffered write(sequential and random, 4KByte write)
> ===================================================================
>
> F2FS surpasses other two filesystems in both random and sequential. In
> desktop and Galaxy S3, f2fs exhibits 2.5 and 1.6 times better performance in
> random write against EXT4, respectively. EXT4 is standard Android
> filesystem.
>
> buffered write (1GB file)
> +-------+---------------------------------+----------------------------------+
> | | Desktop PC | Galaxy-S3
> |
> |
> +-----------------+---------------+------------------+---------------+
> | |sequential (MB/s)| random (IOPS) |sequential (MB/s) | random (IOPS)
> |
> +-------+-----------------+---------------+------------------+---------------+
> | EXT4 | 7.1 | 1073 | 6.7 | 1073
> |
> +-------+-----------------+---------------+------------------+---------------+
> | NILFS2| 6.8 | 1462 | 4.0 | 1272
> |
> +-------+-----------------+---------------+------------------+---------------+
> | F2FS | 10.6 | 2675 | 6.9 | 1682
> |
> +-------+-----------------+---------------+------------------+---------------+
>
>
> * experiment 2: write + fsync(sequential and random)
> ====================================================
>
> F2FS surpasses other two filesystems in both random and sequential workload.
> In desktop and Galaxy S3, f2fs exhibits 2 and 1.5 times better performance
> in write+fsync random write against EXT4, respectively.
>
> write + fsync (100MB file)
> +-------+---------------------------------+----------------------------------+
> | | Desktop PC | Galaxy-S3
> |
> |
> +-----------------+---------------+------------------+---------------+
> | |sequential (KB/s)| random (IOPS) |sequential (KB/s) | random (IOPS)
> |
> +-------+-----------------+---------------+------------------+---------------+
> | EXT4 | 511.8 | 125 | 383.4 | 119
> |
> +-------+-----------------+---------------+------------------+---------------+
> | NILFS2| 545.2 | 112 | 356.7 | 72
> |
> +-------+-----------------+---------------+------------------+---------------+
> | F2FS | 1057.9 | 240 | 772.3 | 184
> |
> +-------+-----------------+---------------+------------------+---------------+
>
> write() with fsync is to test the filesystem performance under Android
> SQLite operation.
>
>
> * experiment 3: mounting time
> ===============================
>
> To measure the mount time, we used two different scenarios. First, we
> mounted file system after formatting without rebooting system. Second, we
> mounted file system after rebooting in order to ensure any data cached in
> memory is flushed. Overall, EXT4 shows fastest mount time, and F2FS shows
> second best performance; however, we observed that F2FS takes longest time
> to mount right after formatting.
>
> mounting time with Transcend 16GB micro-SD
> +-------+-----------------------------------+-----------------------------------+
> | | Desktop PC | Galaxy-S3
> |
> |
> +-----------------+-----------------+-----------------+-----------------+
> | |1st mount after | after rebooting |1st mount after | after
> rebooting |
> | |format (msec) | (msec) |format (msec) | (msec)
> |
> +-------+-----------------+-----------------+-----------------+-----------------+
> | EXT4 | 11 | 20 | 20 | 40
> |
> +-------+-----------------+-----------------+-----------------+-----------------+
> | NILFS2| 920 | 1013 | 1680 | 1630
> |
> +-------+-----------------+-----------------+-----------------+-----------------+
> | F2FS | 1486 | 161 | 2280 | 1570
> |
> +-------+-----------------+-----------------+-----------------+-----------------+
>
>
> Sooman Jeong ESOS Lab. Hanyang University.
> <77smart@xxxxxxxxxxxxx>
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