Terrible Linux network performance after 9344 ?

E

Ed Sutton

Member
Yesterday my UDP multicast test application could send maybe 20-40 times the data it can today. After installing 9344 it was so slow I though it had hung.

I tried removing the updated Parallels Tools and going back to to the old PTools with no improvement. I once again removed and reinstalled the new PTools. I tried removing and re-adding the network adapter with no improvement.

I am running a CentOS 5.3 guest under OS X 10.6.2 and all updates.

Thanks in advance for any tips or suggestions,

-Ed
 
Ed Sutton said:
Yesterday my UDP multicast test application could send maybe 20-40 times the data it can today. After installing 9344 it was so slow I though it had hung.

I tried removing the updated Parallels Tools and going back to to the old PTools with no improvement. I once again removed and reinstalled the new PTools. I tried removing and re-adding the network adapter with no improvement.

I am running a CentOS 5.3 guest under OS X 10.6.2 and all updates.

Thanks in advance for any tips or suggestions,

-Ed
Click to expand...

Interesting, there is nothing special was changed in this part.

Could you please post here the output from Linux-side of the command /sbin/lsmod ?
 
Thank you very much for taking the time to investigate. Basically it acts like the Parallels Tools network drivers are not installed. Is there a way to check for that?

-Ed

[esutton@esutton-vm-centos5-4 ~]$ /sbin/lsmod
Module Size Used by
prl_fs_freeze 9984 0
autofs4 29253 3
hidp 23105 2
rfcomm 42457 0
l2cap 29505 10 hidp,rfcomm
bluetooth 53925 5 hidp,rfcomm,l2cap
lockd 63081 0
sunrpc 145405 2 lockd
prl_fs 25480 1
dm_multipath 24909 0
scsi_dh 11713 1 dm_multipath
video 21193 0
hwmon 7365 0
backlight 10049 1 video
sbs 18533 0
i2c_ec 9025 1 sbs
i2c_core 23745 1 i2c_ec
button 10705 0
battery 13637 0
asus_acpi 19289 0
ac 9157 0
ipv6 267617 22
xfrm_nalgo 13381 1 ipv6
crypto_api 12609 1 xfrm_nalgo
lp 15849 0
floppy 57125 0
snd_intel8x0 35421 1
snd_ac97_codec 93025 1 snd_intel8x0
ac97_bus 6337 1 snd_ac97_codec
snd_seq_dummy 7877 0
snd_seq_oss 32577 0
snd_seq_midi_event 11073 1 snd_seq_oss
snd_seq 49585 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 11725 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss 42817 0
snd_mixer_oss 19009 1 snd_pcm_oss
snd_pcm 72133 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 24517 2 snd_seq,snd_pcm
snd 55749 11 snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
pcspkr 7105 0
soundcore 11553 1 snd
prl_eth 11136 0
snd_page_alloc 14281 2 snd_intel8x0,snd_pcm
prl_tg 17024 3 prl_fs
ide_cd 40161 0
cdrom 36577 1 ide_cd
serio_raw 10693 0
parport_pc 29157 2
parport 37513 2 lp,parport_pc
dm_raid45 67145 0
dm_message 6977 1 dm_raid45
dm_region_hash 15681 1 dm_raid45
dm_mem_cache 9537 1 dm_raid45
dm_snapshot 22885 0
dm_zero 6209 0
dm_mirror 24265 0
dm_log 14657 3 dm_raid45,dm_region_hash,dm_mirror
dm_mod 63225 11 dm_multipath,dm_raid45,dm_snapshot,dm_zero,dm_mirror,dm_log
pata_acpi 9665 0
ata_piix 23621 0
ata_generic 10565 0
libata 157317 3 pata_acpi,ata_piix,ata_generic
sd_mod 25281 0
scsi_mod 141717 3 scsi_dh,libata,sd_mod
ext3 125001 2
jbd 57065 1 ext3
uhci_hcd 25421 0
ohci_hcd 24553 0
ehci_hcd 33869 0
[esutton@esutton-vm-centos5-4 ~]$
 
Ed Sutton said:
Thank you very much for taking the time to investigate. Basically it acts like the Parallels Tools network drivers are not installed. Is there a way to check for that?
Click to expand...

The output of lsmod shows that tools are installed - there is prl_eth module loaded and no ne2k-pci (exactly how it must be when tools are installed)

Could you please reproduce the problem, then send a problem report using menu of Parallels Desktop "Help" -> "Report a Problem" and post here its id

Please also

- execute the command "top" in the Terminal of Linux. Aren't there some process that consumes too many CPU?

- If top have not shown anything suspicious, start /Application/Utilities/ActivityMonitor at Mac OS and take a look whether CPU-usage of prl_vm_app is normal
 
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