Speed Issues

[EvoIX_MR2006]

We have setup a new server with LSWS 4.0.12 and PHP 5.3.1. Everything appears to be normal, but the speeds we get from the server when doing a standard HTTP download are horrendous.

Not sure what I'm doing wrong here, any suggestions?

 

[NiteWave]

is the php script serving the download? that's slow because of php. not due to web server.

if that's the case, there is litespeed trick “X-LiteSpeed-Location”:

http://www.litespeedtech.com/support/wiki/doku.php?id=litespeed:wiki:feature:internal_redirect

which can speed up the download many times.

 

[EvoIX_MR2006]

is the php script serving the download? that's slow because of php. not due to web server.

if that's the case, there is litespeed trick “X-LiteSpeed-Location”:

http://www.litespeedtech.com/support/wiki/doku.php?id=litespeed:wiki:feature:internal_redirect

which can speed up the download many times.

No, its a straight HTTP download. When installing apache on the same server, with the same network, we achieve higher HTTP download speeds.

 

[NiteWave]

I'd like know the exact difference.

size of the download file;

how long it takes under apache and litespeed (transfer rate - bytes/second)

 

[EvoIX_MR2006]

The file is 100 Megabytes.

Locally, the apache server serves this file at nearly 100 MB/s over standard HTTP.
Locally, the litespeed server seems to be locked at 1 MB/s.

At the end user's place of business, they receive 3 MB/s to an apache server, and 400 KB/s to the litespeed server.

 

[NiteWave]

any limit setting for "Per Client Throttling"?

Server-->Server-->Per Client Throttling-->Outbound Bandwidth (bytes/sec)

or vhost level:

virtual hosts->Basic-->Per Client Throttle -->Per Client Bandwidth: Out/sec

or enabled gzip for this big file?

 

[EvoIX_MR2006]

Neither are set.

 

[NiteWave]

will run the test on our lab later(unable to do it right now).

1M/s is too slow for local network download.

 

[EvoIX_MR2006]

No problems. Do you need any more information?

CentOS 5.4
Kernel is 2.6.18-164.11.1.el5

 

[NiteWave]

ok --- in Server-->Tuning, what's your settngs:
Send Buffer Size (bytes):
Use sendfile():

 

[EvoIX_MR2006]

Send Buffer is set to 0 (Default)
We are using sendfile.

 

[EvoIX_MR2006]

We've re-installed the operating system, and are still having the same problem. Hardware is fine, as this works correctly with Apache.

 

[NiteWave]

sorry for reply late.

I tested on 2 files which is 128M and 131M --- for several times. Using wget in another machine on the same LAN. The speed is stable at 112 MB/s(though the initial wget get 51.6 MB/s, 82.7 MB/s, but later fixed at 112MB/s)

2010-02-01 20:57:39 (112 MB/s) - `we.flv' saved [131223311/131223311]
2010-02-01 21:03:40 (112 MB/s) - `access_log.html' saved [128305344/128305344]

Server is CentOS release 5.4 (Final)

~>uname -r
2.6.18-164.9.1.el5

 

[mistwang]

We've re-installed the operating system, and are still having the same problem. Hardware is fine, as this works correctly with Apache.

How about I/O wait of the server? If I/O wait is high, you may consider using 4.1RC2 with AIO enabled.

 

[wanren]

connection limit on VPS license

I visited Litespeed website before and was interested in purchasing a vps license, but it has some kind of limit on connection or something like that.

I come back today and find nowhere stating that limit. Do I miss it somewhere?

I will purchase a vps license if it has no such the limit. Thanks!

 

[wanren]

I visited Litespeed website before and was interested in purchasing a vps license, but it has some kind of limit on connection or something like that.

I come back today and find nowhere stating that limit. Do I miss it somewhere?

I will purchase a vps license if it has no such the limit. Thanks!

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