Steven
Duc Vianney wrote:
>Andrew Morton wrote:
>
>
>>If you have time, please test ext2 and/or reiserfs and/or ext3
>>in writeback mode.
>>
>>
>I ran IOzone on ext2fs, ext3fs, JFS, and Reiserfs on an SMP 4-way
>500MHz, 2.5GB RAM, two 9.1GB SCSI drives. The test partition is 1GB,
>test file size is 128MB, test block size is 4KB, and IO threads varies
>from 1 to 6. When comparing with other file system for this test
>environment, the results on a 2.5.19 SMP kernel show ext3fs is having
>performance problem with Writes and in particularly, with Random Write.
>I think the BKL contention patch would help ext3fs, but I need to verify
>it first.
>
>The following data are throughput in MB/sec obtained from IOzone
>benchmark running on all file systems installed with default options.
>
>
>Kernels 2519smp4 2519smp4 2519smp4 2519smp4
>No of threads=1 ext2-1t jfs-1t ext3-1t reiserfs-1t
>
>Initial write 138010 111023 29808 48170
>Rewrite 205736 204538 119543 142765
>Read 236500 237235 231860 236959
>Re-read 242927 243577 240284 242776
>Random read 204292 206010 201664 207219
>Random write 180144 180461 1090 121676
>
>No of threads=2 ext2-2t jfs-2t ext3-2t reiserfs-2t
>
>Initial write 196477 143395 62248 55260
>Rewrite 261641 261441 126604 205076
>Read 292566 292796 313562 291434
>Re-read 302239 306423 341416 303424
>Random read 296152 295430 316966 288584
>Random write 253026 251013 958 203358
>
>No of threads=4 ext2-4t jfs-4t ext3-4t reiserfs-4t
>
>Initial write 79513 172302 42051 48782
>Rewrite 256568 269840 124912 231395
>Read 290599 303669 327066 283793
>Re-read 289578 303644 327362 287531
>Random read 354011 353455 353806 351671
>Random write 279704 279922 2482 250498
>
>No of threads=6 ext2-6t jfs-6t ext3-6t reiserfs-6t
>
>Initial write 98559 69825 59728 15576
>Rewrite 274993 286987 126048 232193
>Read 330522 326143 332147 326163
>Re-read 339672 328890 333094 326725
>Random read 348059 346154 347901 344927
>Random write 281613 280213 3659 227579
>
>Cheers,
>Duc J Vianney, dvianney@us.ibm.com
>home page: http://www-124.ibm.com/developerworks/opensource/linuxperf/
>project page: http://www-124.ibm.com/developerworks/projects/linuxperf
>
>
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