an Lance Taylor wrote:
> >
> > On Thu, Feb 3, 2022 at 7:21 AM Didier Spezia
> wrote:
> >>
> >> It seems Aarch64 benefits more from the register-based ABI than x86_64.
> >> I don''t see really why. Does anyone have a clue?
> >
> > My
We are using our own benchmark to evaluate the performance of different CPU
models of cloud providers.
https://github.com/AmadeusITGroup/cpubench1A
One point we have realized is the results of such benchmark can be biased
depending on the version of the Go compiler.
For instance, the register-
I suppose the difference between int and int32 comes from the behavior of
the modulo strength reduction mechanism.
With int (=int64), n%1 is compiled as:
MOVQ $0xabcc77118461cefd, AX
MOVQ #n, CX
IMULQ CX
ADDQ CX, DX
SARQ $0x1a, DX
MOVQ CX, BX
SARQ $0x3f, CX
SUBQ CX, DX
IMULQ $0x5f
I believe this is simply due to the 64 bits integer division.
1. Contrary to Java or most C implementations int is 64 bits with Go on
AMD64, and not 32 bits. Integer division on 64 bits is more expensive than
for 32 bits.
2. When array_length is known at compile time, the compiler can replace th
One possibility is to use the 9P client of the kernel and implements a 9P
server in Go - there are a few 9P libraries for Go around.
I doubt it will be more efficient than FUSE though, and btw FUSE is largely
based on the ideas promoted by 9P.
Another possibility is to use the ndb client of the
You may be interested in this thread started by the Badger people:
https://groups.google.com/d/msg/golang-nuts/jPb_h3TvlKE/qdoHhxXeAwAJ
Apparently it can be used to increase the throughput of concurrent disk I/O
heavy programs.
Regards,
Didier.
On Thursday, December 5, 2019 at 10:51:50 AM UTC+
I'm not sure it can help with the problem, but starting with Oracle 11, OCI
installs some custom signal handlers (even catching segmentation faults).
They can be deactivated by setting options in the sqlnet.ora file.
Here, we run all our OCI clients with:
DIAG_SIGHANDLER_ENABLED=FALSE
DIAG_ADR_E
The OP probably means connecting to Oracle from an "externally identified"
user.
Oracle can delegate the authentication to the OS providing the connection
is done from
a given OS user (already authenticated by the system).
Normally, with OCI, you can connect by passing empty strings for user an
A few remarks:
1/ If you want to compare to node.js, please remove the CPU profiling
option from the go program - it comes with some overhead.
2/ The comparison is not really fair.
node.js implements a unique event loop (everything runs on the same thread).
Go generally schedules the goroutines
Sorry for the silly question, but since you do not have any \n or separator
after the %X,
are you sure the extra characters do not come from the next fmt.Printf in
your code?
On Thursday, December 1, 2016 at 5:25:41 PM UTC+1, Felipe Santos wrote:
>
> Hi,
>
> I am trying to link C++ shared lib to
Any non trivial program is scalable up a certain point.
In your code, you may have some contention.
It can be physical (CPU, memory, network, disks, etc ...) or logical
(mutexes, channels, shared memory, etc ...)
If it is not in your own code, then perhaps it may be in the packages you
use, inclu
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