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A disabled debug helper to visualize reads/writes and if they would have been

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contiguous. Was used to optimized CD boot before the alpha release.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33521 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz 2009-10-11 16:42:21 +00:00
parent 6e6b0851ca
commit 3e12a70b0d
1 changed files with 23 additions and 0 deletions
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23
src/add-ons/kernel/bus_managers/scsi/emulation.c
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@ -126,6 +126,29 @@ scsi_read_write_6(scsi_ccb *request)
cdb->length = B_HOST_TO_BENDIAN_INT16((uint16)cmd->length);
cdb->control = cmd->control;
if (0) {
static uint32 lastLBA = 0;
static uint16 lastLength = 0;
static uint32 contigCount = 0;
static uint64 totalContig = 0;
uint32 currentLBA = B_BENDIAN_TO_HOST_INT32(cdb->lba);
uint16 currentLength = B_BENDIAN_TO_HOST_INT16(cdb->length);
if (lastLBA + lastLength == currentLBA) {
contigCount++;
totalContig++;
} else
contigCount = 0;
lastLBA = currentLBA;
lastLength = currentLength;
dprintf("scsi_read_write_6: %lld lba %ld; length: %d\n", totalContig,
B_BENDIAN_TO_HOST_INT32(cdb->lba),
B_BENDIAN_TO_HOST_INT16(cdb->length));
}
return true;
}