Re: native threads

I didn't know that: thanks.

However in this case it looks mostly like the SBCL GC is doing better: CCL is spending 85% of the time in GC, SBCL somewhat less (about 65%).

I am trying to think of a case where a microbenchmark like this tells you anything useful about real programs. But I can't.

--tim

On 5 Jan 2024, at 17:55, Ron Garret <[email protected]> wrote:

CCL compiles everything. The SBCL compiler is just better.

On Jan 5, 2024, at 9:11 AM, Tim Bradshaw <[email protected] > wrote:

You realise that SBCL is almost certainly compiling this and CCL is almost certainly not?

--tim

On 5 Jan 2024, at 14:29, Taoufik Dachraoui <[email protected] > wrote:


It looks like it is not because of the threads:

taoufik@Ankbot:~/workspace/ccl/actor$ sbclThis is SBCL 2.3.11, an implementation of ANSI Common Lisp.More information about SBCL is available at < http://www.sbcl.org/ >.SBCL is free software, provided as is, with absolutely no warranty.It is mostly in the public domain; some portions are provided underBSD-style licenses. See the CREDITS and COPYING files in thedistribution for more information.* (time (reduce #'+ (loop for i from 0 upto 100000000 collect i)))Evaluation took: 1.836 seconds of real time 1.835223 seconds of total run time (1.351394 user, 0.483829 system) [ Real times consist of 1.184 seconds GC time, and 0.652 seconds non-GC time. ] [ Run times consist of 1.184 seconds GC time, and 0.652 seconds non-GC time. ] 99.95% CPU 3,876,850,246 processor cycles 1,600,427,200 bytes consed 5000000050000000* taoufik@Ankbot:~/workspace/ccl/actor$ cclClozure Common Lisp Version 1.12.1 (v1.12.1-22-g6b1f1d3a) LinuxX8664For more information about CCL, please see http://ccl.clozure.com .CCL is free software. It is distributed under the terms of the ApacheLicence, Version 2.0.? (time (reduce #'+ (loop for i from 0 upto 100000000 collect i)))(REDUCE #'+ (LOOP FOR I FROM 0 UPTO 100000000 COLLECT I))took 13,091,079 microseconds (13.091079 seconds) to run. 11,036,666 microseconds (11.036666 seconds, 84.31%) of which was spent in GC.During that period, and with 24 available CPU cores, 12,734,283 microseconds (12.734283 seconds) were spent in user mode 336,005 microseconds ( 0.336005 seconds) were spent in system mode 1,600,000,032 bytes of memory allocated. 397,400 minor page faults, 0 major page faults, 0 swaps.5000000050000000?

On Fri, Jan 5, 2024 at 3:10 PM Taoufik Dachraoui <[email protected] > wrote:

Hi

In my current implementation of a classical actor model

I found that using ccl processes is much slower than sbcl threads

to create a thread I use ccl:process-run-function, is there another way to

create native threads that are much faster; I do not need the ccl scheduling,

I want to create threads that are scheduled by the OS, I think that the ccl

scheduler is the reason why my ccl tests are much slower than the tests run

with sbcl

Regards
--

Taoufik Dachraoui

--

Taoufik Dachraoui