Re: [Lse-tech] Re: ext3 performance bottleneck as the number of spindles gets large

kwijibo
2002-06-22T08:10:55Z

If you tried the link earlier and it didn't work I'm sorry.
Had a mental brain fart with the web server. It should
work now.

Steven

kwijibo@zianet.com wrote:

> This web site may be of interest for this discussion:
> http://labs.zianet.com. I have benchmarks using NFS
> with ext3 there. It also compares ext3 with ReiserFS.
> The page is not quite complete but it has the
> benchmarks up.
>
> 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
>>
>>
>> -
>> To unsubscribe from this list: send the line "unsubscribe
>> linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at http://www.tux.org/lkml/
>>
>>
>>
>>
>
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
>