mer users?
Is anyone here trying to use Mer as their main OS on their tablet? If so, just wondering about their impressions and have you found it stable enough for regular use? ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: 2Gb internal storage on N810
Eero Tamminen wrote: 1. with constant swap file writes, it's much easier to accidentally cause the card FAT file system to get corrupted ... If you want swap, I would suggest a fast SD card with a separate _partition_ for swap AFAIK since version 2.4 of linux kernel, swapping to file no longer goes via filesystem code at all and speed is similar/same to swapping to block device directly. Kernel swapping code makes mapping for blocks belonging to swap file on the beginning and then uses underlying block device directly (both for speed and for deadlock prevention). If the file is not heavily fragmented speed should be the same. Fragmentation is visible in kernel log when swap file is enabled (number of extents). As for corruption I'm not sure but I'd say it is not an issue too since file is already allocated and filesystem code is not used when swapping. Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: 2Gb internal storage on N810
Frantisek Dufka wrote: AFAIK since version 2.4 of linux kernel, swapping to file no longer goes via filesystem code at all and speed is similar/same to swapping to block device directly. That is true but in this case, AFAIK, with the maemo control panel you're building a swap file on a FAT32 file system. That would most likely result in a different performance metric than if you built a swap file on top of ext3 or used a raw swap slice. Someone please correct me if I'm wrong, however, as I've considered partitioning up my own SD cards. I do know that the I/O throughput varies greatly from card to card which is why the high speed SDHC cards are more expensive depending on the speed class. q.v. http://www.sdcard.org/developers/tech/speed_class -Gary ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: 2Gb internal storage on N810
On Thu, 23 Jul 2009, Gary wrote: Frantisek Dufka wrote: AFAIK since version 2.4 of linux kernel, swapping to file no longer goes via filesystem code at all and speed is similar/same to swapping to block device directly. That is true but in this case, AFAIK, with the maemo control panel you're building a swap file on a FAT32 file system. That would most likely result in a different performance metric than if you built a swap file on top of ext3 or used a raw swap slice. Someone please correct me if I'm wrong, You are wrong. A simplified version of what happens: At swapon time, the kernel builds a table in RAM of where all the blocks of the swap file are. Later during swap in/out the table is used and filesystem is ignored. So filesystem might affect the time to run swapon, which happens once at boot time, but does not matter to the swap performance after that. -- Matan Ziv-Av. ma...@svgalib.org ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Fwd: mer users?
Forwarding this question to the Maemo Users' List. -- Forwarded message -- From: sean tech.j...@myfairpoint.net Date: Thu, Jul 23, 2009 at 9:14 PM Subject: Re: mer users? To: William Dowden wtdow...@gmail.com William Dowden wrote: Yes, good question! I would like to ask further, has anyone here even attempted to use Mer on their tablet, main OS or dual booted?If so, we would love to hear about that project. On Thu, Jul 23, 2009 at 12:02 PM, sean tech.j...@myfairpoint.net mailto:tech.j...@myfairpoint.net wrote: Is anyone here trying to use Mer as their main OS on their tablet? If so, just wondering about their impressions and have you found it stable enough for regular use? ___ maemo-users mailing list maemo-users@maemo.org mailto:maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users You only responded to me, not to the list. Suggest you repost to the list and I look forward to the replies you receive. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
