Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: Recursive chmod/chown OOM kills box with 32MB RAM | Date | Sat, 28 Jan 2006 17:01:02 +0200 |
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On Saturday 28 January 2006 16:13, Denis Vlasenko wrote: > I have an old PII server box with just 32MB of RAM. > > Yesterday I was preparing it for use by other people, not just me, > and went on checking and tightening filesystem permissions with > chmod -R and/or chown -R. > > On deep directories box started to OOM-kill processes en masse! > > I updated kernel to 2.6.15.1 - doesn't help. > I stopped some of more memory hungry processes before running > chmod -R - doesn't help.
More details which might be relevant.
I did not alter anything in /proc/sys/vm, maybe I should?
# cd /proc/sys/vm # for a in *; do echo "$a: `cat "$a"`"; done block_dump: 0 dirty_background_ratio: 10 dirty_expire_centisecs: 3000 dirty_ratio: 40 dirty_writeback_centisecs: 500 hugetlb_shm_group: 0 laptop_mode: 0 legacy_va_layout: 0 lowmem_reserve_ratio: 256 256 32 max_map_count: 65536 min_free_kbytes: 724 nr_hugepages: 0 nr_pdflush_threads: 2 overcommit_memory: 0 overcommit_ratio: 50 page-cluster: 3 swap_token_timeout: 300 swappiness: 60 vfs_cache_pressure: 100
SCSI controller and disks attached to it:
lspci says: "00:0b.0 SCSI storage controller: Adaptec AIC-7880U (rev 01)" boot log: 13:48:34.50 ahc_pci:0:11:0: Using left over BIOS settings 13:48:34.50 scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0 13:48:34.50 <Adaptec aic7880 Ultra SCSI adapter> 13:48:34.50 aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs 13:48:34.50 13:48:34.50 Vendor: IBM Model: DNES-309170W Rev: SAH0 13:48:34.50 Type: Direct-Access ANSI SCSI revision: 03 13:48:34.50 scsi0:A:0:0: Tagged Queuing enabled. Depth 8 13:48:34.50 target0:0:0: Beginning Domain Validation 13:48:34.50 target0:0:0: wide asynchronous. 13:48:34.50 target0:0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 8) 13:48:34.50 target0:0:0: Domain Validation skipping write tests 13:48:34.50 target0:0:0: Ending Domain Validation 13:48:34.50 Vendor: IBM Model: DNES-309170W Rev: SAH0 13:48:34.50 Type: Direct-Access ANSI SCSI revision: 03 13:48:34.50 scsi0:A:1:0: Tagged Queuing enabled. Depth 8 13:48:34.50 target0:0:1: Beginning Domain Validation 13:48:34.50 target0:0:1: wide asynchronous. 13:48:34.50 target0:0:1: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 8) 13:48:34.50 target0:0:1: Domain Validation skipping write tests 13:48:34.50 target0:0:1: Ending Domain Validation 13:48:34.50 Vendor: SEAGATE Model: ST39140N Rev: 1498 13:48:34.50 Type: Direct-Access ANSI SCSI revision: 02 13:48:34.50 scsi0:A:3:0: Tagged Queuing enabled. Depth 8 13:48:34.50 target0:0:3: Beginning Domain Validation 13:48:34.50 target0:0:3: FAST-20 SCSI 20.0 MB/s ST (50 ns, offset 15) 13:48:34.50 target0:0:3: Domain Validation skipping write tests 13:48:34.50 target0:0:3: Ending Domain Validation 13:48:34.50 libata version 1.20 loaded. 13:48:34.50 SCSI device sda: 17916240 512-byte hdwr sectors (9173 MB) 13:48:34.50 SCSI device sda: drive cache: write back 13:48:34.50 SCSI device sda: 17916240 512-byte hdwr sectors (9173 MB) 13:48:34.50 SCSI device sda: drive cache: write back 13:48:34.50 sda: sda1 sda2 13:48:34.50 sd 0:0:0:0: Attached scsi disk sda 13:48:34.51 SCSI device sdb: 17916240 512-byte hdwr sectors (9173 MB) 13:48:34.51 SCSI device sdb: drive cache: write back 13:48:34.51 SCSI device sdb: 17916240 512-byte hdwr sectors (9173 MB) 13:48:34.51 SCSI device sdb: drive cache: write back 13:48:34.51 sdb: sdb1 sdb2 13:48:34.51 sd 0:0:1:0: Attached scsi disk sdb 13:48:34.51 SCSI device sdc: 17783240 512-byte hdwr sectors (9105 MB) 13:48:34.51 SCSI device sdc: drive cache: write back 13:48:34.51 SCSI device sdc: 17783240 512-byte hdwr sectors (9105 MB) 13:48:34.51 SCSI device sdc: drive cache: write back 13:48:34.51 sdc: sdc1 sdc2 sdc3
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