gaul | 3 years ago | on: Goodbye, Feedly
https://tt-rss.org/ is a free software, self-hosted alternative and https://ttrss.info/ is a paid hosted offering.
gaul's comments
gaul | 4 years ago | on: Toxiproxy is a framework for simulating network conditions
Vaurien can do this:
gaul | 4 years ago | on: size_t-to-int vulnerability in Linux’s filesystem layer
clang's -Wshorten-64-to-32 can catch this:
https://clang.llvm.org/docs/DiagnosticsReference.html#wshort...
The more general-purpose -Wconversion has many false positives, often around int to char conversion. Some functions like int toupper(int) have an unexpected int return type to deal with special out-of-bound values like EOF.
gaul | 4 years ago
This is not a NOP; it explicitly clears the upper 32 bits of EDI since the compiler does not know that they are zero in this situation. If you change cc from an int to size_t (long on x86-64) the compiler will generate:
mov eax, OFFSET FLAT:.LC0
cmp rdi, 258
ja .L1
mov rax, QWORD PTR CSWTCH.1[0+rdi*8]
gaul | 5 years ago | on: Dropping Hashes (2020)
Robert O'Callahan hashed some thoughts about Firefox that he revealed many years later:
https://robert.ocallahan.org/2018/01/ancient-browser-wars-hi...
gaul | 5 years ago | on: The Evolution of the QEMU Translator
HP Dynamo is similar to what you suggest:
https://www.hpl.hp.com/techreports/1999/HPL-1999-78.html
Note that CPUs and compiler optimization have improved over the last 20 years and these results may not still hold.
gaul | 5 years ago | on: The future of 32-bit Linux
The article mentions 32-bit Raspbian which is moving to 64-bit to better support the Raspberry Pi 4 with 8 GB of RAM. Both the RPi 3 and 4 have 64-bit support but earlier models, including the popular and still-on-sale Zero, do not support 64-bit. This platform will likely stick around for a long time; we need to continue to fix issues like this size_t/off_t one in s3fs:
gaul | 5 years ago | on: S3 Strong Consistency
Thanks for testing! You may improve performance via increasing -o parallel_count (default="5"). Newer versions of s3fs have improved performance but please report any cliffs at https://github.com/s3fs-fuse/s3fs-fuse/issues .
gaul | 5 years ago | on: S3 Strong Consistency
This is great news for application developers! And probably hard work for the AWS implementors. I will try to update this over the weekend: https://github.com/gaul/are-we-consistent-yet
gaul | 5 years ago | on: S3 Strong Consistency
Could you expand on this comment? s3fs uses multiple threads for uploading and populating readdir metadata via S3fsMultiCurl::MultiPerform. Earlier versions used curl_multi_perform which may have hidden some of the parallelism from you.
gaul | 5 years ago | on: S3 Strong Consistency
This is not expected behavior. An older version had pessimized locking which preventing concurrently adding a file to a directory and listing the directory simultaneously which is the most similar symptom. I recommend upgrading to the latest version, running with debug flags `-f -d -o curldbg`, and observing what's happening. Please open an issue at https://github.com/s3fs-fuse/s3fs-fuse/issues if your symptoms persist.
gaul | 5 years ago | on: Would you be willing to fund a Linux port to Apple Silicon?
I maintain mbpfan and have contributed to a few other Linux on Mac tools.
Linux on Mac is not worth the effort. I ran Ubuntu on a 2011 MacBook Air and now run Fedora on a 2014 MacBook Air. There were several papercuts even with these relatively open models where it took a while to get suspend, trackpad, fan, webcam, wifi, etc. working properly. You will need to use binary drivers for the latter two features and some strange EFI bootloader. It seems that newer MacBook compatibility is worse:
https://github.com/Dunedan/mbp-2016-linux
I use Debian on ThinkPad at work and plan to buy this or a Dell XPS for my next laptop.
gaul | 5 years ago | on: Apple Silicon M1 chip in MacBook Air outperforms high-end 16-inch MacBook Pro
Note that this laptop uses Kaby Lake based on the older Skylake design. Newer laptops use Sunny Cove based on Ice Lake and have improved single-core performance.
gaul | 5 years ago | on: Apple Silicon M1 chip in MacBook Air outperforms high-end 16-inch MacBook Pro
MacBook Air with M1 vs. XPS 13 with Tiger Lake i7-1165G7:
https://browser.geekbench.com/v5/cpu/compare/4306696?baselin...
Single core similar and multicore 50% better for MacBook.
gaul | 5 years ago | on: A better way to do remote presentations
Every talk should include a link to the slides at the beginning and end of the deck, preferably with a shortened URL. This allows live viewers random access but also improves recorded talks. I often want to evaluate the content of a talk to see if I should invest 30-60 minutes watching. This would also help users with accessibility needs.
gaul | 5 years ago | on: Backblaze B2 Cloud Storage Now Has S3 Compatible APIs
This changed in 1.86 and I updated the README as follows:
> random writes or appends to files require rewriting the entire object, optimized with multi-part upload copy
Now changing one bit means re-uploading 5 MB, the minimum S3 part size.
gaul | 6 years ago | on: Awesome-ld-preload: List of resources related to LD_PRELOAD
Fixed; thanks for the feedback.
gaul | 6 years ago | on: Java's URL.equals() Performs DNS Resolution
URL's behavior is unfortunate and users should prefer URI introduced in Java 1.4 in 2002. error-prone warns about dangerous uses of URL:
gaul | 6 years ago | on: You don’t have to be “pro-nuclear” or “anti-nuclear.”
I was surprised to learn that America makes 805.3 TWh[1] but France only 519.4 TWh[2] of nuclear energy.
[1] https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_St... [2] https://en.wikipedia.org/wiki/Nuclear_power_in_France
gaul | 7 years ago | on: Show HN: B2blaze – A Backblaze B2 library for Python
Object stores unfortunately innovate on their APIs instead of their implementations. I wrote S3Proxy to bridge the gap between S3 applications and a variety of object stores including B2:
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