Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Steven Hartland
If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P Steve / K - Original Message - From: Willem Jan Withagen [EMAIL PROTECTED] Steven Hartland wrote: I've just finished putting together a new server box spec:

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread willem jan withagen
Steven Hartland wrote: If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P I've just finished putting together a new server box spec: Dual AMD 244, 2GB ram, 5 * Seagate SATA 400GB on a Highpoint 1820a RAID 5 array.

doubt: msgrcv not return EAGAIN?

2005-05-08 Thread ChenMing
hello, hackers. I use following line to recive message from message queue: int ret; ret = msgrcv(msgid, msg, sizeof(msg), 0, IPC_NOWAIT) if (ret == -1) { if (errno == EAGAIN){ // no message in queue } else{ // here is an error occur } } but it sounds not works as

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Scott Long
Steven Hartland wrote: If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P The RR1280 cards are really just software RAID cards. All of the parity calculations are done by the CPU. I couldn't find much evidence that the

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Steven Hartland
Original Message - From: Scott Long [EMAIL PROTECTED] Steven Hartland wrote: If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P The RR1280 cards are really just software RAID cards. All of the parity

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Scott Long
Steven Hartland wrote: Original Message - From: Scott Long [EMAIL PROTECTED] Steven Hartland wrote: If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P The RR1280 cards are really just software RAID cards. All of

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Steven Hartland
- Original Message - From: willem jan withagen [EMAIL PROTECTED] If that where the case it would have been it wouldn't have been 46Mb/s it would have been 543Mb/s, just tested it for you :P I've just finished putting together a new server box spec: Dual AMD 244, 2GB ram, 5 * Seagate SATA

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Steven Hartland
- Original Message - From: Scott Long [EMAIL PROTECTED] According to the documentation this is not the case and the XOR calcs are done in hardware on the onboard HPT 601. Maybe I'm confused and we are talking about different cards. Quite possibly all other highpoint cards that Im aware of

Re: doubt: msgrcv not return EAGAIN?

2005-05-08 Thread Dan Nelson
In the last episode (May 07), ChenMing said: I use following line to recive message from message queue: int ret; ret = msgrcv(msgid, msg, sizeof(msg), 0, IPC_NOWAIT) if (ret == -1) { if (errno == EAGAIN){ // no message in queue } else{ // here is an error

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Willem Jan Withagen
Steven Hartland wrote: Still I would argue that if you do not use a write size larger than what you have as real memory, that buffering in real memory is going to play a role I think you miss read all the details here Willem. Sorry about that, if that is the case. Original values: Write:

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread Steven Hartland
- Original Message - From: Willem Jan Withagen [EMAIL PROTECTED] That is well phrased English for what I was trying to say. I'm glad to see that it worked for you. And I'm certainly impressed by the numbers... This is on a 4 disk RAID5 with one hot spare??? Unfortunately not, we needed

Linux emulation [Re: Very low disk performance Highpoint 1820a]

2005-05-08 Thread Scott Long
Steven Hartland wrote: - Original Message - From: Scott Long [EMAIL PROTECTED] According to the documentation this is not the case and the XOR calcs are done in hardware on the onboard HPT 601. Maybe I'm confused and we are talking about different cards. Quite possibly all other

Re: Very low disk performance Highpoint 1820a

2005-05-08 Thread FUJISHIMA Satsuki
At Sun, 08 May 2005 08:35:38 -0600, Scott Long wrote: According to the documentation this is not the case and the XOR calcs are done in hardware on the onboard HPT 601. Maybe I'm confused and we are talking about different cards. RocketRAID 1820 is a plain SATA card with software RAID. 1820A