* [9fans] Why are some apps so slow? @ 2006-09-22 5:31 John Floren 2006-09-22 5:54 ` Skip Tavakkolian ` (3 more replies) 0 siblings, 4 replies; 11+ messages in thread From: John Floren @ 2006-09-22 5:31 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs Hi everybody, hope this message doesn't come out like a troll. I'm just wondering why some Plan 9 programs seem to act so slowly. Acme news is incredibly sluggish, and page takes far longer to display an image or a doc page than it has any right to. Admittedly, this is running on a PII machine, but even on one of those, I expect better performance. Hell, my 486 was better at displaying images. John -- "The first thing we do, let's kill all the lawyers" -- Shakespeare, Henry VI ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 5:31 [9fans] Why are some apps so slow? John Floren @ 2006-09-22 5:54 ` Skip Tavakkolian 2006-09-22 6:08 ` Anselm R. Garbe ` (2 subsequent siblings) 3 siblings, 0 replies; 11+ messages in thread From: Skip Tavakkolian @ 2006-09-22 5:54 UTC (permalink / raw) To: 9fans where are the images stored? > Hi everybody, hope this message doesn't come out like a troll. > I'm just wondering why some Plan 9 programs seem to act so slowly. > Acme news is incredibly sluggish, and page takes far longer to display > an image or a doc page than it has any right to. Admittedly, this is > running on a PII machine, but even on one of those, I expect better > performance. Hell, my 486 was better at displaying images. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 5:31 [9fans] Why are some apps so slow? John Floren 2006-09-22 5:54 ` Skip Tavakkolian @ 2006-09-22 6:08 ` Anselm R. Garbe 2006-09-22 11:43 ` erik quanstrom 2006-09-22 13:49 ` jmk 3 siblings, 0 replies; 11+ messages in thread From: Anselm R. Garbe @ 2006-09-22 6:08 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs On Fri, Sep 22, 2006 at 01:31:12AM -0400, John Floren wrote: > Hi everybody, hope this message doesn't come out like a troll. > I'm just wondering why some Plan 9 programs seem to act so slowly. > Acme news is incredibly sluggish, and page takes far longer to display > an image or a doc page than it has any right to. Admittedly, this is > running on a PII machine, but even on one of those, I expect better > performance. Hell, my 486 was better at displaying images. This depends on the OS you used on this 486 box and how this OS has been designed (maybe it wasn't intended to be a distributed OS). Regards, -- Anselm R. Garbe ><>< www.ebrag.de ><>< GPG key: 0D73F361 ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 5:31 [9fans] Why are some apps so slow? John Floren 2006-09-22 5:54 ` Skip Tavakkolian 2006-09-22 6:08 ` Anselm R. Garbe @ 2006-09-22 11:43 ` erik quanstrom 2006-09-22 13:49 ` jmk 3 siblings, 0 replies; 11+ messages in thread From: erik quanstrom @ 2006-09-22 11:43 UTC (permalink / raw) To: 9fans you can run stats on your machine with at least load, ether, context, memory. perhaps this will make problem apparent. what video card/mode are you using? (cat /dev/vgactl) - erik ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 5:31 [9fans] Why are some apps so slow? John Floren ` (2 preceding siblings ...) 2006-09-22 11:43 ` erik quanstrom @ 2006-09-22 13:49 ` jmk 2006-09-22 15:02 ` C H Forsyth 2006-09-22 20:21 ` Francisco J Ballesteros 3 siblings, 2 replies; 11+ messages in thread From: jmk @ 2006-09-22 13:49 UTC (permalink / raw) To: 9fans Now that you've completed STEP 1 - ask if anyone knows the answer - on to STEP 2 - use the tools you have been given to find out for yourself. On Fri Sep 22 01:34:39 EDT 2006, slawmaster@gmail.com wrote: > Hi everybody, hope this message doesn't come out like a troll. > I'm just wondering why some Plan 9 programs seem to act so slowly. > Acme news is incredibly sluggish, and page takes far longer to display > an image or a doc page than it has any right to. Admittedly, this is > running on a PII machine, but even on one of those, I expect better > performance. Hell, my 486 was better at displaying images. > > John > -- > "The first thing we do, let's kill all the lawyers" -- Shakespeare, Henry VI ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 13:49 ` jmk @ 2006-09-22 15:02 ` C H Forsyth 2006-09-22 20:21 ` Francisco J Ballesteros 1 sibling, 0 replies; 11+ messages in thread From: C H Forsyth @ 2006-09-22 15:02 UTC (permalink / raw) To: 9fans i run the system on a k6-ii 350 and it's fine, so it is not inherently slow on smaller machines. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 13:49 ` jmk 2006-09-22 15:02 ` C H Forsyth @ 2006-09-22 20:21 ` Francisco J Ballesteros 2006-09-23 13:32 ` Russ Cox 1 sibling, 1 reply; 11+ messages in thread From: Francisco J Ballesteros @ 2006-09-22 20:21 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs I´ve found that many times there is a lot of latency added because of multiple walk, open, read, clunk. Not that this could be the cause for this problem, but it reminded me of it. Anyone actually studied this? Anyone considered replacing this with, say, put/get rpcs that do it all? In some cases there are multiple read (or write), rounds, but many times, I see the 4 rpcs just to get a bunch of bytes. This was a concern for us while using omero across slow network links. just curiosity, thanks in any case. On 9/22/06, jmk@plan9.bell-labs.com <jmk@plan9.bell-labs.com> wrote: > Now that you've completed STEP 1 - ask if anyone knows the > answer - on to STEP 2 - use the tools you have been given to find > out for yourself. > > On Fri Sep 22 01:34:39 EDT 2006, slawmaster@gmail.com wrote: > > Hi everybody, hope this message doesn't come out like a troll. > > I'm just wondering why some Plan 9 programs seem to act so slowly. > > Acme news is incredibly sluggish, and page takes far longer to display > > an image or a doc page than it has any right to. Admittedly, this is > > running on a PII machine, but even on one of those, I expect better > > performance. Hell, my 486 was better at displaying images. > > > > John > > -- > > "The first thing we do, let's kill all the lawyers" -- Shakespeare, Henry VI > > ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-22 20:21 ` Francisco J Ballesteros @ 2006-09-23 13:32 ` Russ Cox 2006-09-23 13:47 ` Francisco J Ballesteros 0 siblings, 1 reply; 11+ messages in thread From: Russ Cox @ 2006-09-23 13:32 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs > Anyone actually studied this? Anyone considered replacing this with, say, > put/get rpcs that do it all? In some cases there are multiple read (or write), > rounds, but many times, I see the 4 rpcs just to get a bunch of bytes. > This was a concern for us while using omero across slow network links. Of course, one easy solution to this is to keep the file descriptor open for more than one read or write. Then it's just one round trip. Russ ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-23 13:32 ` Russ Cox @ 2006-09-23 13:47 ` Francisco J Ballesteros 2006-09-23 14:55 ` Russ Cox 0 siblings, 1 reply; 11+ messages in thread From: Francisco J Ballesteros @ 2006-09-23 13:47 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs But in many cases the files read are small, and keeping the fd open would not help. Just curiosity, anyway. On 9/23/06, Russ Cox <rsc@swtch.com> wrote: > > Anyone actually studied this? Anyone considered replacing this with, say, > > put/get rpcs that do it all? In some cases there are multiple read (or write), > > rounds, but many times, I see the 4 rpcs just to get a bunch of bytes. > > This was a concern for us while using omero across slow network links. > > Of course, one easy solution to this is to keep the file descriptor > open for more than one read or write. Then it's just one round trip. > > Russ > > ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-23 13:47 ` Francisco J Ballesteros @ 2006-09-23 14:55 ` Russ Cox 2006-09-23 15:00 ` Francisco J Ballesteros 0 siblings, 1 reply; 11+ messages in thread From: Russ Cox @ 2006-09-23 14:55 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs > But in many cases the files read are small, and keeping the > fd open would not help. Just curiosity, anyway. Why wouldn't keeping the fd open help? It would get rid of the walk, open, and close, 3 of the 4 messages you were trying to get down to 1. Rsus ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [9fans] Why are some apps so slow? 2006-09-23 14:55 ` Russ Cox @ 2006-09-23 15:00 ` Francisco J Ballesteros 0 siblings, 0 replies; 11+ messages in thread From: Francisco J Ballesteros @ 2006-09-23 15:00 UTC (permalink / raw) To: Fans of the OS Plan 9 from Bell Labs I mean, many times a program reads a small file once. You have to open it, and once it has been read, you do not want to read it again. Leaving it open would not help. On 9/23/06, Russ Cox <rsc@swtch.com> wrote: > > But in many cases the files read are small, and keeping the > > fd open would not help. Just curiosity, anyway. > > Why wouldn't keeping the fd open help? > It would get rid of the walk, open, and close, > 3 of the 4 messages you were trying to get down to 1. > > Rsus > > ^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2006-09-23 15:00 UTC | newest] Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2006-09-22 5:31 [9fans] Why are some apps so slow? John Floren 2006-09-22 5:54 ` Skip Tavakkolian 2006-09-22 6:08 ` Anselm R. Garbe 2006-09-22 11:43 ` erik quanstrom 2006-09-22 13:49 ` jmk 2006-09-22 15:02 ` C H Forsyth 2006-09-22 20:21 ` Francisco J Ballesteros 2006-09-23 13:32 ` Russ Cox 2006-09-23 13:47 ` Francisco J Ballesteros 2006-09-23 14:55 ` Russ Cox 2006-09-23 15:00 ` Francisco J Ballesteros
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