Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-26 Thread Vladislav Bolkhovitin
Douglas Gilbert, on 09/18/2013 07:07 AM wrote: > On 13-09-18 03:58 AM, Jack Wang wrote: >> On 09/18/2013 08:41 AM, Alireza Haghdoost wrote: >>> Hi >>> >>> I am working on a high throughput and low latency application which >>> does not tolerate block layer overhead to send IO request directly to >>

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-19 Thread Nicholas A. Bellinger
On Wed, 2013-09-18 at 21:05 -0500, Alireza Haghdoost wrote: > On Wed, Sep 18, 2013 at 4:00 PM, Nicholas A. Bellinger > wrote: > > On Wed, 2013-09-18 at 01:41 -0500, Alireza Haghdoost wrote: > Hi Nicholas, > > Thanks for your reply sharing your thought with us. Please find my > comments below:

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-18 Thread Alireza Haghdoost
On Wed, Sep 18, 2013 at 4:00 PM, Nicholas A. Bellinger wrote: > On Wed, 2013-09-18 at 01:41 -0500, Alireza Haghdoost wrote: >> Hi >> >> I am working on a high throughput and low latency application which >> does not tolerate block layer overhead to send IO request directly to >> fiber channel lowe

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-18 Thread Nicholas A. Bellinger
On Wed, 2013-09-18 at 01:41 -0500, Alireza Haghdoost wrote: > Hi > > I am working on a high throughput and low latency application which > does not tolerate block layer overhead to send IO request directly to > fiber channel lower layer SCSI driver. I used to work with libaio but > currently I am

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-18 Thread Boaz Harrosh
On 09/18/2013 05:07 PM, Douglas Gilbert wrote: > On 13-09-18 03:58 AM, Jack Wang wrote: >> On 09/18/2013 08:41 AM, Alireza Haghdoost wrote: >>> Hi >>> >>> I am working on a high throughput and low latency application which >>> does not tolerate block layer overhead to send IO request directly to >>

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-18 Thread Douglas Gilbert
On 13-09-18 03:58 AM, Jack Wang wrote: On 09/18/2013 08:41 AM, Alireza Haghdoost wrote: Hi I am working on a high throughput and low latency application which does not tolerate block layer overhead to send IO request directly to fiber channel lower layer SCSI driver. I used to work with libaio

Re: Bypass block layer and Fill SCSI lower layer driver queue

2013-09-18 Thread Jack Wang
On 09/18/2013 08:41 AM, Alireza Haghdoost wrote: > Hi > > I am working on a high throughput and low latency application which > does not tolerate block layer overhead to send IO request directly to > fiber channel lower layer SCSI driver. I used to work with libaio but > currently I am looking for