Søren Schmidt wrote:
sos 2008-04-17 12:29:36 UTC
FreeBSD src repository
Modified files:
sys/dev/ata ata-all.c ata-all.h ata-chipset.c
ata-disk.c ata-dma.c ata-lowlevel.c
ata-pci.c ata-queue.c ata-raid.c
atapi-cam.c atapi-cd.c atapi-fd.c
atapi-tape.c
Log:
Go back to preallocating everything possible on init.
This avoids calling busdma in the request processing path which caused a
traumatic performance degradation.
Allocation has be postponed to after we know how many devices we possible can
have on portmulitpliers to save some space.
Revision Changes Path
1.285 +7 -58 src/sys/dev/ata/ata-all.c
1.133 +27 -18 src/sys/dev/ata/ata-all.h
1.217 +30 -26 src/sys/dev/ata/ata-chipset.c
1.210 +6 -3 src/sys/dev/ata/ata-disk.c
1.154 +139 -59 src/sys/dev/ata/ata-dma.c
1.83 +4 -4 src/sys/dev/ata/ata-lowlevel.c
1.126 +8 -8 src/sys/dev/ata/ata-pci.c
1.72 +6 -4 src/sys/dev/ata/ata-queue.c
1.130 +4 -2 src/sys/dev/ata/ata-raid.c
1.57 +2 -1 src/sys/dev/ata/atapi-cam.c
1.199 +6 -3 src/sys/dev/ata/atapi-cd.c
1.114 +2 -1 src/sys/dev/ata/atapi-fd.c
1.107 +2 -1 src/sys/dev/ata/atapi-tape.c
Will this also remedy the panic I've had?
panic: to many DMA segment entries.
Regards!
//Niclas
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