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13481
2007 Jun 26
1
Memory Experimentation: Rule of Thumb = 10-15 Times the Memory
...e R process (919MB, probably 1024 vs. 1000
B/MB), even after the read.csv() is finished and gc() has been run.
Nothing seems to have been released back to the OS.
Now,
> rm(s)
> gc()
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 270541 14.5 6679958 356.8 11268755 601.9
Vcells 139481 1.1 27476536 209.7 42807620 326.6
linux 'top' now reports 650MB of memory use (though R itself uses only
15.6Mb). My guess is that It leaves the trigger memory of 567MB plus
the base 48MB.
There are two interesting observations for me here: first, to read a
.csv file, I need to have...
2007 Aug 09
1
Memory Experimentation: Rule of Thumb = 10-15 Times the Memory
...t; B/MB), even after the read.csv() is finished and gc() has been run.
> Nothing seems to have been released back to the OS.
>
> Now,
>
>> rm(s)
>> gc()
> used (Mb) gc trigger (Mb) max used (Mb)
> Ncells 270541 14.5 6679958 356.8 11268755 601.9
> Vcells 139481 1.1 27476536 209.7 42807620 326.6
>
> linux 'top' now reports 650MB of memory use (though R itself uses only
> 15.6Mb). My guess is that It leaves the trigger memory of 567MB plus
> the base 48MB.
>
>
> There are two interesting observations for me here: first, to...
2007 May 16
1
Sorting by Received vs Sent
Looks like in Cyrus, sorting by Received date is faster than sorting by the Sent header date because of the way they use the index and cache files... http://www.emaildiscussions.com/showpost.php?p=419246
Is this the case in Dovecot as well?
Bill