mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
faf1e1fb4c
qemu/hw
History
Fam Zheng faf1e1fb4c virtio-scsi: Optimize virtio_scsi_init_req 
The VirtQueueElement is a very big structure (>48k!), since it will be
initialzed by virtqueue_pop, we can save the expensive zeroing here.

This saves a few microseconds per request in my test:

[fio-test]      rw         bs         iodepth    jobs       bw         iops       latency
--------------------------------------------------------------------------------------------
Before          read       4k         1          1          110        28269      34
After           read       4k         1          1          131        33745      28

Whereas,

virtio-blk      read       4k         1          1          217        55673      16

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-23 15:40:51 +02:00
..
9pfs hw/9pfs: Don't return type from host in readdir on local 9p filesystem 2014-09-04 10:51:13 -05:00
acpi pcihp: fix possible array out of bounds 2014-08-25 00:16:06 +02:00
alpha memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
arm - Memory: improve error reporting and avoid crashes on hotplug 2014-09-12 16:55:49 +01:00
audio SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
block block: Always compile virtio-blk dataplane 2014-09-22 11:39:51 +01:00
bt l2cap: fix access to freed memory 2014-08-15 19:12:48 +04:00
char serial: fixing vmstate for save/restore 2014-09-11 12:20:32 +02:00
core pci, pc, virtio, misc bugfixes 2014-09-18 20:02:01 +01:00
cpu icc_bus: QOM'ify ICC 2013-12-24 18:02:18 +01:00
cris memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
display - Memory: improve error reporting and avoid crashes on hotplug 2014-09-12 16:55:49 +01:00
dma dma: axidma: Variablise repeated s->streams[i] sub-expr 2014-08-24 13:16:32 +04:00
gpio pl061: implement input interrupt logic 2014-09-12 14:06:48 +01:00
i2c Fix debug print warning 2014-09-02 22:38:16 +04:00
i386 pc: Add missing 'static' attribute 2014-09-22 12:09:43 +04:00
ide ahci: properly shadow the TFD register 2014-09-22 11:39:41 +01:00
input pckbd: adding new fields to vmstate 2014-09-11 12:20:32 +02:00
intc Fix debug print warning 2014-09-02 22:38:16 +04:00
ipack memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
isa Fix debug print warning 2014-09-02 22:38:16 +04:00
lm32 memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
m68k memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
mem pc-dimm: fix up error message 2014-08-14 13:22:00 +02:00
microblaze memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
mips memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
misc PPC: Cuda: Use cuda timer to expose tbfreq to guest 2014-09-08 12:50:52 +02:00
moxie memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
net virtio: Import virtio_vring.h 2014-09-22 11:39:49 +01:00
nvram PPC: mac_nvram: Split NVRAM into OF and OSX parts 2014-09-08 12:50:52 +02:00
openrisc memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
pci memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
pci-bridge ioh3420: remove unused ioh3420_init() declaration 2014-09-02 17:28:26 +03:00
pci-host - Memory: improve error reporting and avoid crashes on hotplug 2014-09-12 16:55:49 +01:00
pcmcia hw: Fix qemu_allocate_irqs() leaks 2014-06-30 21:13:30 +02:00
ppc Fix typos and misspellings in comments 2014-09-20 17:55:53 +04:00
s390x memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
scsi virtio-scsi: Optimize virtio_scsi_init_req 2014-09-23 15:40:51 +02:00
sd sd: sdhci: Fix ADMA dma_memory_read access 2014-08-04 14:41:54 +01:00
sh4 memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
sparc memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
sparc64 memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
ssi ssi: xilinx_spi: Initialise CS GPIOs as NULL 2014-08-15 18:54:40 +04:00
timer mc146818rtc: add missed field to vmstate 2014-09-11 12:20:32 +02:00
tpm Add ACPI tables for TPM 2014-08-25 00:16:06 +02:00
tricore memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
unicore32 memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
usb xhci PCIe endpoint migration compatibility fix 2014-09-10 07:20:53 +02:00
virtio block: Always compile virtio-blk dataplane 2014-09-22 11:39:51 +01:00
watchdog memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
xen memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
xenpv machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
xtensa memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
Makefile.objs pc: implement pc-dimm device abstraction 2014-06-19 16:41:47 +03:00