Recently I realized that my changes to /etc/resolve.conf always got overwritten upon system reboot, after searching the web for a while I found the solution from StackExchange: Ubuntu 16.04 IfContinue reading
In this post I’ll go through the disassembly (commented inline) of the following C++ snippet: #include <concepts> #include <coroutine> class task { public: class promise_type { public: class always_suspend {Continue reading
Today my server experienced an outage and restarted automatically. However, my blog didn’t go online after that. With a little invesitgation it immediately got obvious that the nginx failed toContinue reading
FP32 can be converted to BFloat16 simply by truncating the lower 16 bits. So we can do this with some bit operations. Internally two sets of FP32s (i.e., elements inContinue reading
Recently I built Linux 5.10 LTS for my N1 box. Below are the patches I needed during the building process. TEXT_OFFSET Obsolete: See comments from justin below, it’s no longerContinue reading
I wrote a blog about blocking Thunder in tranmission-daemon 2.94. The patch does not apply cleanly on Transmission 3.00, so I update it here: — a/libtransmission/peer-mgr.c 2021-08-31 03:10:20.435836776 +0800 +++Continue reading
By default transmission-web-control forces a default reload interval of 5 seconds, and a minimum of 3 seconds. As I’m not that into reducing bandwidth, I overrode the default behavior. DefaultContinue reading
This seems to relate to a kernel change in 3.15. To workaround it I have to prevent UAS driver from binding to my HDD drive by setting usb-storage.quirks. Unfortunately, solutionContinue reading
Sort of an excersise.. The four LUTs for converting numeric values to ASCII chars is ugly. Besides, since both _mm256_shuffle_epi8 and _mm256_blendv_epi8 suffers from low throughput (1 CPI / 2Continue reading
By default Linux (randomly?) chooses “Client IPv6 Address” (given by HE.net) as source address for outbound connections. This can be inconvenient sometimes tough. To override this, it’s possible to addContinue reading