User Profile

[atomsymbol]

In my opinion, you are missing quite a lot by not ever reading the NaCl paper. It's just a single paper, not a hundred papers.


...

[atomsymbol]

NaCl is part of a research area. A person can choose to read articles from that research area or choose not to read them. Dismissing a whole research...

[atomsymbol]

Michael It would be nice to benchmark Tomb Raider on a many-core Threadripper once LLVMpipe is mature enough. An AMD EPYC CPU with twice the memory channels...

[atomsymbol]

I meant extending Linux, not extending some other "imaginary" OS. If you don't know how to achieve the performance target I mentioned, that's...

[atomsymbol]

It has less than 0.5% CPU utilization on my machine with 183 tasks, 218 kernel threads and 1538 total threads. htop: 1.3%....

[atomsymbol]

NaCl....

[atomsymbol]

I hope you do realize that there exist far better [research] methods of how to increase performance of kernel-userspace transitions, by a factor of 10...

[atomsymbol]

The results aren't that far from generic (mitigations on) settings on AMD CPUs. Numbers for Intel might be different. Future/newer Intel CPUs will resolve...

[atomsymbol]

Ryzen 3000 desktop. Mitigations disabled....

[atomsymbol]

I am now getting very nice ping latencies of 9ms (from location 1) and 17ms (from location 2)....

[atomsymbol]

Just a note: Reducing 3 syscalls into 1 most likely won't increase uncached IOPS: HDD has about 100 random IOPS, SSD is about 10000 random IOPS (except...

[atomsymbol]

I am getting ping latencies of 126ms (from location 1) and 170ms (from location 2):

$ ping openbenchmarking.org
PING openbenchmarking.org

...

[atomsymbol]

Done that. I suppose the kernel mailing list is getting proposals for new syscalls like readfile() multiple times per year and is rejecting them most...

[atomsymbol]

Is there a real-world scenario in which open/read/close of sysfs and procfs files is a bottleneck?



I agree....

[atomsymbol]

At first, I thought that the proposed system call is capable of reading multiple small files using a single system call - which would help increase HDD/SSD...

[atomsymbol]

Until it gets confirmed by reproducible measurements, it may be just a placebo effect....

[atomsymbol]

Just some current latencies:

$ ping openbenchmarking.org
PING openbenchmarking.org (162.252.83.89) 56(84) bytes of data.
64 bytes

...

[atomsymbol]

The progress is cool. Isn't virgl "just" a wrapper for use from within qemu to send commands to the virglrenderer library?...

[atomsymbol]

Is the radeonsi driver able to switch between Wave32 and Wave64 based on which one of the two options has higher estimated/predicted performance?...

[atomsymbol]

You are going to live your life once....