Transfer large files after modifying some codes

[Enjia]

Hi, when transferring large file (eg. 5G, connect successfully), client threw out an error : [CurlClient.cpp]Got error=LocalError:No Error, Exceeded max PTO.
So the first question is that what causes PTO timeout.
However if I test mvfst alone instead of proxygen, there's no such exception.

The strange thing is that if I modify the codes in SampleHandlers.h:

folly::getCPUExecutor()->add(std::bind(&StaticFileHandler::readFile, this, folly::EventBaseManager::get()->getEventBase()));

into:

readFile();

that is to say I skip the CPUExecutor, I can transfer the large file no matter what size it is. I wonder whether such modification will leave some hidden troubles skipping the CPUExecutor or do you guys have any other good idea of transferring large files? Thanks!

[afrind]

Sorry we didn't engage here sooner. You don't want to read the file (perform disk IO) in the I/O thread. In fact, I might expect the PTO timeout to be more likely when you are blocking the event base?

As for why you get a PTO timeout when the disk I/O is offloaded I'm not sure. @yangchi since you engaged on the other issue, do you have any thoughts here?

[yangchi]

too old. close. sorry you will need reopen a new issue if you still have problem with large transfer