Re: Is print faster than syswrite?

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Re^2: Is print faster than syswrite? by saurabh.hirani (Beadle) on Jan 28, 2009 at 05:26 UTC
Add FILE->autoflush(1); after the open statement. (Don't forget to use use IO::Handle;) to bring print inline with syswrite. Thanks. That is really useful information. I thought $\| = 1 affects buffering of print function wherever it is used. I will try it out.	[reply]
Re^3: Is print faster than syswrite? by ikegami (Patriarch) on Jan 28, 2009 at 05:42 UTC
`$\|=1;` only affects the currently selected file handle, which is `STDOUT` by default.	[reply] [d/l] [select]
Re^2: Is print faster than syswrite? by saurabh.hirani (Beadle) on Jan 28, 2009 at 08:13 UTC
Used FILE->autoflush(1). That stopped the clobbering and bought print to the level of syswrite. In 30 seconds both of them created a file of around 30 MB.	[reply]
Re^2: Is print faster than syswrite? by belg4mit (Prior) on Jan 29, 2009 at 05:47 UTC
Actually, it acts on the currently select()d filehandle, which is generally STDOUT, but not always. That's why you still sometimes see the convoluted `select((select(STDOUT),$\|=1)[0]);` `-- In Bob We Trust, All Others Bring Data.`	[reply] [d/l]
Re^3: Is print faster than syswrite? by ikegami (Patriarch) on Jan 29, 2009 at 07:23 UTC
I know, I already said that. I wasn't making a general statement, I was talking about the variables in his program (`STDOUT` and `FILE`). And that convoluted bit? That's how `autoflush` does it too. (Well, a slightly safer variation.) I prefer to use `autoflush` cause it's way more readable.	[reply] [d/l] [select]
Re^4: Is print faster than syswrite? by belg4mit (Prior) on Jan 30, 2009 at 03:47 UTC
>I know, I already said that Aye. 5 minutes before I did (so please excuse the lag, it took me awhile to find the correct incantation), and in a different node :-P. The statement "$\| = 1; only affects STDOUT, not FILE" doesn;t convey an understanding of this though, which was I mentioned it. `-- In Bob We Trust, All Others Bring Data.`	[reply]
Re^5: Is print faster than syswrite? by ikegami (Patriarch) on Jan 30, 2009 at 05:40 UTC


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