It is currently Sun 17 Dec, 2017 04:30

All times are UTC + 2 hours




 Page 1 of 1 [ 2 posts ] 
Author Message
 Post subject: Extreamly slow, sucks down a whole cpu while doing it.
PostPosted: Wed 24 Sep, 2008 20:23 
Registered
Registered

Joined: Mon 22 Sep, 2008 20:35
Posts: 2
I really like this application and nice not having to fire up windows
just to donwload my gps data.

There are several problems with the button draws (often times they are grayed out) and you have to flip screens to get them to activate again.

Also sometimes the screen flipping causes random triangles to be draw
across the whole screen.

But the biggest problem seem to be the speed.
It sometimes takes well over an hour to write the gpx data of say
around 10k points. (sames goes for kml datat as well)
Also the MacTravelRecored app is taking well over 80% of a cpu while
writing out this data.

Downloading from the gps unit (qstarz BT-Q1000) is not super fast either, slower than using cmd line gpsbable, but not horribly slower.


Offline
 Profile  
 
 Post subject: Re: Extreamly slow, sucks down a whole cpu while doing it.
PostPosted: Thu 09 Oct, 2008 03:43 
Registered
Registered

Joined: Mon 22 Sep, 2008 20:35
Posts: 2
cattelan wrote:
I really like this application and nice not having to fire up windows
just to donwload my gps data.

There are several problems with the button draws (often times they are grayed out) and you have to flip screens to get them to activate again.

Also sometimes the screen flipping causes random triangles to be draw
across the whole screen.

But the biggest problem seem to be the speed.
It sometimes takes well over an hour to write the gpx data of say
around 10k points. (sames goes for kml datat as well)
Also the MacTravelRecored app is taking well over 80% of a cpu while
writing out this data.

Downloading from the gps unit (qstarz BT-Q1000) is not super fast either, slower than using cmd line gpsbable, but not horribly slower.



Doing some digging with dtruss it looks like some of the problem is due to constant reading and seeking of the sqlite db.

57783/0x93e9b58: open_nocancel("/Volumes/Home/cattelan/Desktop/TravelRecorder/LogData/Mac TravelRecorder.db\0", 0x20202, 0x1A4) = 9 0

.
.
.

57783/0x93e9b58: lseek(0x9, 0x18, 0x0) = 24 0
57783/0x93e9b58: read_nocancel(0x9, "\0", 0x10) = 16 0
57783/0x93e9b58: lseek(0x9, 0x400, 0x0) = 1024 0
57783/0x93e9b58: read_nocancel(0x9, "\005\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0xB77400, 0x0) = 12022784 0
57783/0x93e9b58: read_nocancel(0x9, "\005\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x20C00, 0x0) = 134144 0
57783/0x93e9b58: read_nocancel(0x9, "\005\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x800, 0x0) = 2048 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0xC00, 0x0) = 3072 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x1000, 0x0) = 4096 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x1400, 0x0) = 5120 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x1800, 0x0) = 6144 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x1C00, 0x0) = 7168 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x2000, 0x0) = 8192 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x2400, 0x0) = 9216 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0
57783/0x93e9b58: lseek(0x9, 0x2800, 0x0) = 10240 0
57783/0x93e9b58: read_nocancel(0x9, "\r\0", 0x400) = 1024 0

.
.
.




Russell-Cattelans-MacBook[7:15pm]-=>grep -i "read_nocancel(0x9" /tmp/tr_trae |wc -l
21907509


Offline
 Profile  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 2 posts ] 

All times are UTC + 2 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:

cron