Why I Write multiple File Slowly?

NTFSD
1

I write a UDF FileSystem In windows 2000,when write a big file,it’s very
fast,But write 2 file or more than.it’s very slowly.
I find the First file write anear end, the Second File write is
begin(each first file"IRP_MJ_WRITE
,PagingIo=1,NonCachedIo=1,SynchronousIo=1",when no end the seconed File
write arrive).so some time Write first ,some time write second ,switch
to…but system fastfat not this circs.

2

You’re not forcing all I/O to occur synchronously, are you?

xxxxx@sina.com wrote:

I write a UDF FileSystem In windows 2000,when write a big file,it’s very
fast,But write 2 file or more than.it’s very slowly.
I find the First file write anear end, the Second File write is
begin(each first file"IRP_MJ_WRITE
,PagingIo=1,NonCachedIo=1,SynchronousIo=1",when no end the seconed File
write arrive).so some time Write first ,some time write second ,switch
to…but system fastfat not this circs.

–
Nick Ryan (MVP for DDK)