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Groups > comp.lang.java.programmer > #39582
| From | Eric Sosman <esosman@comcast-dot-net.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Threads [Was: Get real, user and system time] |
| Date | 2020-07-21 15:46 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <rf7gmi$6mt$1@dont-email.me> (permalink) |
| References | <87o8oc99wk.fsf@munus.decebal.nl> <rf5a0m$q3a$1@dont-email.me> <rf6kur$apm$1@dont-email.me> <rf6nrs$42m$1@dont-email.me> <rf76lq$rq0$1@dont-email.me> |
On 7/21/2020 12:55 PM, Martin Gregorie wrote:
> On Tue, 21 Jul 2020 08:42:32 -0400, Eric Sosman wrote:
>> This sounds like the "green threads" model used in Old-Time Original
>> Java of a quarter-century ago. Is Linux still stuck with that relic?
> [...]
> AFAIK Java uses the standard thread module but I could be wrong: I
> haven't examined its inner workings - just know that a running Java
> program looks the same in 'top' as a threaded C program while multiple
> processes with with shared memory look quite different.
Okay, then: The external evidence ("JVM has only one `top' line")
means that Java isn't using the old "LinuxThreads" implementation, but
we can't really tell whether it is or isn't using "green threads."
>> Anyhow: If you're right, that would explain why nobody runs Java
>> on Linux multi-core servers ...
>>
> More do that you may realise: my mail archive is Java and runs on a dual
> Athlon. I run a variety of Java applications on this Intel i5 based
> laptop. All my computers run Linux apart from one or two PIC-based
> devices (PicAXE and Parallax STAMP) but those don't run Java.
I guess my intended ironic tone didn't survive transcription onto
Usenet. Shoulda used a smiley ...
--
esosman@comcast-dot-net.invalid
Maskless Trump is a bare-faced liar.
One hundred eighty-three days to go.
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Get real, user and system time Cecil Westerhof <Cecil@decebal.nl> - 2020-07-18 16:26 +0200
Re: Get real, user and system time Martin Gregorie <martin@mydomain.invalid> - 2020-07-18 20:59 +0000
Re: Get real, user and system time Luuk <luuk@invalid.lan> - 2020-07-20 08:06 +0200
Re: Get real, user and system time Martin Gregorie <martin@mydomain.invalid> - 2020-07-20 08:55 +0000
Re: Get real, user and system time Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2020-07-21 01:40 +0200
Re: Get real, user and system time Martin Gregorie <martin@mydomain.invalid> - 2020-07-21 11:52 +0000
Threads [Was: Get real, user and system time] Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-21 08:42 -0400
Re: Threads [Was: Get real, user and system time] Martin Gregorie <martin@mydomain.invalid> - 2020-07-21 16:55 +0000
Re: Threads [Was: Get real, user and system time] Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-21 15:46 -0400
Re: Threads [Was: Get real, user and system time] Martin Gregorie <martin@mydomain.invalid> - 2020-07-21 20:16 +0000
Re: Threads [Was: Get real, user and system time] Martin Gregorie <martin@mydomain.invalid> - 2020-07-21 23:14 +0000
Re: Get real, user and system time Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2020-07-22 00:23 +0200
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